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@ -4297,7 +4297,7 @@
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<p>以上述的求和函数为例，设问题 <span class="arithmatex">\(f(n) = 1 + 2 + \dots + n\)</span> 。</p>
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<ul>
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<li><strong>迭代</strong>：在循环中模拟求和过程，从 <span class="arithmatex">\(1\)</span> 遍历到 <span class="arithmatex">\(n\)</span> ，每轮执行求和操作，即可求得 <span class="arithmatex">\(f(n)\)</span> 。</li>
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<li><strong>递归</strong>：将问题分解为子问题 <span class="arithmatex">\(f(n) = n + f(n-1)\)</span> ，不断（递归地）分解下去，直至基本情况 <span class="arithmatex">\(f(0) = 0\)</span> 时终止。</li>
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<li><strong>递归</strong>：将问题分解为子问题 <span class="arithmatex">\(f(n) = n + f(n-1)\)</span> ，不断（递归地）分解下去，直至基本情况 <span class="arithmatex">\(f(1) = 1\)</span> 时终止。</li>
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</ul>
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<h3 id="1">1. 调用栈<a class="headerlink" href="#1" title="Permanent link">¶</a></h3>
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<p>递归函数每次调用自身时，系统都会为新开启的函数分配内存，以存储局部变量、调用地址和其他信息等。这将导致两方面的结果。</p>
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@ -4765,7 +4765,24 @@
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</code></pre></div>
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</div>
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<div class="tabbed-block">
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<div class="highlight"><span class="filename">recursion.swift</span><pre><span></span><code><a id="__codelineno-89-1" name="__codelineno-89-1" href="#__codelineno-89-1"></a><span class="p">[</span><span class="kd">class</span><span class="p">]{}</span><span class="o">-</span><span class="p">[</span><span class="kd">func</span><span class="p">]{</span><span class="n">forLoopRecur</span><span class="p">}</span>
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<div class="highlight"><span class="filename">recursion.swift</span><pre><span></span><code><a id="__codelineno-89-1" name="__codelineno-89-1" href="#__codelineno-89-1"></a><span class="cm">/* 使用迭代模拟递归 */</span>
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<a id="__codelineno-89-2" name="__codelineno-89-2" href="#__codelineno-89-2"></a><span class="kd">func</span> <span class="nf">forLoopRecur</span><span class="p">(</span><span class="n">n</span><span class="p">:</span> <span class="nb">Int</span><span class="p">)</span> <span class="p">-></span> <span class="nb">Int</span> <span class="p">{</span>
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<a id="__codelineno-89-3" name="__codelineno-89-3" href="#__codelineno-89-3"></a> <span class="c1">// 使用一个显式的栈来模拟系统调用栈</span>
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<a id="__codelineno-89-4" name="__codelineno-89-4" href="#__codelineno-89-4"></a> <span class="kd">var</span> <span class="nv">stack</span><span class="p">:</span> <span class="p">[</span><span class="nb">Int</span><span class="p">]</span> <span class="p">=</span> <span class="p">[]</span>
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<a id="__codelineno-89-5" name="__codelineno-89-5" href="#__codelineno-89-5"></a> <span class="kd">var</span> <span class="nv">res</span> <span class="p">=</span> <span class="mi">0</span>
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<a id="__codelineno-89-6" name="__codelineno-89-6" href="#__codelineno-89-6"></a> <span class="c1">// 递：递归调用</span>
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<a id="__codelineno-89-7" name="__codelineno-89-7" href="#__codelineno-89-7"></a> <span class="k">for</span> <span class="n">i</span> <span class="k">in</span> <span class="bp">stride</span><span class="p">(</span><span class="n">from</span><span class="p">:</span> <span class="n">n</span><span class="p">,</span> <span class="n">to</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span> <span class="n">by</span><span class="p">:</span> <span class="o">-</span><span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
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||||
<a id="__codelineno-89-8" name="__codelineno-89-8" href="#__codelineno-89-8"></a> <span class="c1">// 通过“入栈操作”模拟“递”</span>
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<a id="__codelineno-89-9" name="__codelineno-89-9" href="#__codelineno-89-9"></a> <span class="n">stack</span><span class="p">.</span><span class="n">append</span><span class="p">(</span><span class="n">i</span><span class="p">)</span>
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<a id="__codelineno-89-10" name="__codelineno-89-10" href="#__codelineno-89-10"></a> <span class="p">}</span>
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<a id="__codelineno-89-11" name="__codelineno-89-11" href="#__codelineno-89-11"></a> <span class="c1">// 归：返回结果</span>
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<a id="__codelineno-89-12" name="__codelineno-89-12" href="#__codelineno-89-12"></a> <span class="k">while</span> <span class="o">!</span><span class="n">stack</span><span class="p">.</span><span class="bp">isEmpty</span> <span class="p">{</span>
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<a id="__codelineno-89-13" name="__codelineno-89-13" href="#__codelineno-89-13"></a> <span class="c1">// 通过“出栈操作”模拟“归”</span>
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<a id="__codelineno-89-14" name="__codelineno-89-14" href="#__codelineno-89-14"></a> <span class="n">res</span> <span class="o">+=</span> <span class="n">stack</span><span class="p">.</span><span class="bp">removeLast</span><span class="p">()</span>
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<a id="__codelineno-89-15" name="__codelineno-89-15" href="#__codelineno-89-15"></a> <span class="p">}</span>
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<a id="__codelineno-89-16" name="__codelineno-89-16" href="#__codelineno-89-16"></a> <span class="c1">// res = 1+2+3+...+n</span>
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<a id="__codelineno-89-17" name="__codelineno-89-17" href="#__codelineno-89-17"></a> <span class="k">return</span> <span class="n">res</span>
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<a id="__codelineno-89-18" name="__codelineno-89-18" href="#__codelineno-89-18"></a><span class="p">}</span>
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</code></pre></div>
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</div>
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<div class="tabbed-block">
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@ -3440,8 +3440,8 @@ dp[i] = \min(dp[i-1], dp[i-2]) + cost[i]
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<a id="__codelineno-5-7" name="__codelineno-5-7" href="#__codelineno-5-7"></a> <span class="c1">// 初始化 dp 表，用于存储子问题的解</span>
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<a id="__codelineno-5-8" name="__codelineno-5-8" href="#__codelineno-5-8"></a> <span class="kd">var</span> <span class="nv">dp</span> <span class="p">=</span> <span class="nb">Array</span><span class="p">(</span><span class="n">repeating</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span> <span class="bp">count</span><span class="p">:</span> <span class="n">n</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span>
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<a id="__codelineno-5-9" name="__codelineno-5-9" href="#__codelineno-5-9"></a> <span class="c1">// 初始状态：预设最小子问题的解</span>
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<a id="__codelineno-5-10" name="__codelineno-5-10" href="#__codelineno-5-10"></a> <span class="n">dp</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="p">=</span> <span class="mi">1</span>
|
||||
<a id="__codelineno-5-11" name="__codelineno-5-11" href="#__codelineno-5-11"></a> <span class="n">dp</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="p">=</span> <span class="mi">2</span>
|
||||
<a id="__codelineno-5-10" name="__codelineno-5-10" href="#__codelineno-5-10"></a> <span class="n">dp</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span> <span class="p">=</span> <span class="n">cost</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
|
||||
<a id="__codelineno-5-11" name="__codelineno-5-11" href="#__codelineno-5-11"></a> <span class="n">dp</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span> <span class="p">=</span> <span class="n">cost</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
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||||
<a id="__codelineno-5-12" name="__codelineno-5-12" href="#__codelineno-5-12"></a> <span class="c1">// 状态转移：从较小子问题逐步求解较大子问题</span>
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||||
<a id="__codelineno-5-13" name="__codelineno-5-13" href="#__codelineno-5-13"></a> <span class="k">for</span> <span class="n">i</span> <span class="k">in</span> <span class="bp">stride</span><span class="p">(</span><span class="n">from</span><span class="p">:</span> <span class="mi">3</span><span class="p">,</span> <span class="n">through</span><span class="p">:</span> <span class="n">n</span><span class="p">,</span> <span class="n">by</span><span class="p">:</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
|
||||
<a id="__codelineno-5-14" name="__codelineno-5-14" href="#__codelineno-5-14"></a> <span class="n">dp</span><span class="p">[</span><span class="n">i</span><span class="p">]</span> <span class="p">=</span> <span class="bp">min</span><span class="p">(</span><span class="n">dp</span><span class="p">[</span><span class="n">i</span> <span class="o">-</span> <span class="mi">1</span><span class="p">],</span> <span class="n">dp</span><span class="p">[</span><span class="n">i</span> <span class="o">-</span> <span class="mi">2</span><span class="p">])</span> <span class="o">+</span> <span class="n">cost</span><span class="p">[</span><span class="n">i</span><span class="p">]</span>
|
||||
|
||||
@ -3404,7 +3404,7 @@
|
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<p>以下代码给出了链式地址哈希表的简单实现，需要注意两点。</p>
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||||
<ul>
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||||
<li>使用列表（动态数组）代替链表，从而简化代码。在这种设定下，哈希表（数组）包含多个桶，每个桶都是一个列表。</li>
|
||||
<li>以下实现包含哈希表扩容方法。当负载因子超过 <span class="arithmatex">\(0.75\)</span> 时，我们将哈希表扩容至 <span class="arithmatex">\(2\)</span> 倍。</li>
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<li>以下实现包含哈希表扩容方法。当负载因子超过 <span class="arithmatex">\(\frac{2}{3}\)</span> 时，我们将哈希表扩容至 <span class="arithmatex">\(2\)</span> 倍。</li>
|
||||
</ul>
|
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<div class="tabbed-set tabbed-alternate" data-tabs="1:12"><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><input id="__tabbed_1_3" name="__tabbed_1" type="radio" /><input id="__tabbed_1_4" name="__tabbed_1" type="radio" /><input id="__tabbed_1_5" name="__tabbed_1" type="radio" /><input id="__tabbed_1_6" name="__tabbed_1" type="radio" /><input id="__tabbed_1_7" name="__tabbed_1" type="radio" /><input id="__tabbed_1_8" name="__tabbed_1" type="radio" /><input id="__tabbed_1_9" name="__tabbed_1" type="radio" /><input id="__tabbed_1_10" name="__tabbed_1" type="radio" /><input id="__tabbed_1_11" name="__tabbed_1" type="radio" /><input id="__tabbed_1_12" name="__tabbed_1" type="radio" /><div class="tabbed-labels"><label for="__tabbed_1_1">Python</label><label for="__tabbed_1_2">C++</label><label for="__tabbed_1_3">Java</label><label for="__tabbed_1_4">C#</label><label for="__tabbed_1_5">Go</label><label for="__tabbed_1_6">Swift</label><label for="__tabbed_1_7">JS</label><label for="__tabbed_1_8">TS</label><label for="__tabbed_1_9">Dart</label><label for="__tabbed_1_10">Rust</label><label for="__tabbed_1_11">C</label><label for="__tabbed_1_12">Zig</label></div>
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<div class="tabbed-content">
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@ -3416,7 +3416,7 @@
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<a id="__codelineno-0-5" name="__codelineno-0-5" href="#__codelineno-0-5"></a><span class="w"> </span><span class="sd">"""构造方法"""</span>
|
||||
<a id="__codelineno-0-6" name="__codelineno-0-6" href="#__codelineno-0-6"></a> <span class="bp">self</span><span class="o">.</span><span class="n">size</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># 键值对数量</span>
|
||||
<a id="__codelineno-0-7" name="__codelineno-0-7" href="#__codelineno-0-7"></a> <span class="bp">self</span><span class="o">.</span><span class="n">capacity</span> <span class="o">=</span> <span class="mi">4</span> <span class="c1"># 哈希表容量</span>
|
||||
<a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a> <span class="bp">self</span><span class="o">.</span><span class="n">load_thres</span> <span class="o">=</span> <span class="mi">2</span> <span class="o">/</span> <span class="mi">3</span> <span class="c1"># 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-0-8" name="__codelineno-0-8" href="#__codelineno-0-8"></a> <span class="bp">self</span><span class="o">.</span><span class="n">load_thres</span> <span class="o">=</span> <span class="mf">2.0</span> <span class="o">/</span> <span class="mf">3.0</span> <span class="c1"># 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-0-9" name="__codelineno-0-9" href="#__codelineno-0-9"></a> <span class="bp">self</span><span class="o">.</span><span class="n">extend_ratio</span> <span class="o">=</span> <span class="mi">2</span> <span class="c1"># 扩容倍数</span>
|
||||
<a id="__codelineno-0-10" name="__codelineno-0-10" href="#__codelineno-0-10"></a> <span class="bp">self</span><span class="o">.</span><span class="n">buckets</span> <span class="o">=</span> <span class="p">[[]</span> <span class="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">capacity</span><span class="p">)]</span> <span class="c1"># 桶数组</span>
|
||||
<a id="__codelineno-0-11" name="__codelineno-0-11" href="#__codelineno-0-11"></a>
|
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@ -3501,7 +3501,7 @@
|
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<a id="__codelineno-1-9" name="__codelineno-1-9" href="#__codelineno-1-9"></a>
|
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<a id="__codelineno-1-10" name="__codelineno-1-10" href="#__codelineno-1-10"></a><span class="w"> </span><span class="k">public</span><span class="o">:</span>
|
||||
<a id="__codelineno-1-11" name="__codelineno-1-11" href="#__codelineno-1-11"></a><span class="w"> </span><span class="cm">/* 构造方法 */</span>
|
||||
<a id="__codelineno-1-12" name="__codelineno-1-12" href="#__codelineno-1-12"></a><span class="w"> </span><span class="n">HashMapChaining</span><span class="p">()</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">size</span><span class="p">(</span><span class="mi">0</span><span class="p">),</span><span class="w"> </span><span class="n">capacity</span><span class="p">(</span><span class="mi">4</span><span class="p">),</span><span class="w"> </span><span class="n">loadThres</span><span class="p">(</span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mi">3</span><span class="p">),</span><span class="w"> </span><span class="n">extendRatio</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-1-12" name="__codelineno-1-12" href="#__codelineno-1-12"></a><span class="w"> </span><span class="n">HashMapChaining</span><span class="p">()</span><span class="w"> </span><span class="o">:</span><span class="w"> </span><span class="n">size</span><span class="p">(</span><span class="mi">0</span><span class="p">),</span><span class="w"> </span><span class="n">capacity</span><span class="p">(</span><span class="mi">4</span><span class="p">),</span><span class="w"> </span><span class="n">loadThres</span><span class="p">(</span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">),</span><span class="w"> </span><span class="n">extendRatio</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-1-13" name="__codelineno-1-13" href="#__codelineno-1-13"></a><span class="w"> </span><span class="n">buckets</span><span class="p">.</span><span class="n">resize</span><span class="p">(</span><span class="n">capacity</span><span class="p">);</span>
|
||||
<a id="__codelineno-1-14" name="__codelineno-1-14" href="#__codelineno-1-14"></a><span class="w"> </span><span class="p">}</span>
|
||||
<a id="__codelineno-1-15" name="__codelineno-1-15" href="#__codelineno-1-15"></a>
|
||||
@ -3618,7 +3618,7 @@
|
||||
<a id="__codelineno-2-10" name="__codelineno-2-10" href="#__codelineno-2-10"></a><span class="w"> </span><span class="kd">public</span><span class="w"> </span><span class="nf">HashMapChaining</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-2-11" name="__codelineno-2-11" href="#__codelineno-2-11"></a><span class="w"> </span><span class="n">size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-2-12" name="__codelineno-2-12" href="#__codelineno-2-12"></a><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4</span><span class="p">;</span>
|
||||
<a id="__codelineno-2-13" name="__codelineno-2-13" href="#__codelineno-2-13"></a><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-2-13" name="__codelineno-2-13" href="#__codelineno-2-13"></a><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-2-14" name="__codelineno-2-14" href="#__codelineno-2-14"></a><span class="w"> </span><span class="n">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span>
|
||||
<a id="__codelineno-2-15" name="__codelineno-2-15" href="#__codelineno-2-15"></a><span class="w"> </span><span class="n">buckets</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">ArrayList</span><span class="o"><></span><span class="p">(</span><span class="n">capacity</span><span class="p">);</span>
|
||||
<a id="__codelineno-2-16" name="__codelineno-2-16" href="#__codelineno-2-16"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">capacity</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
@ -3730,7 +3730,7 @@
|
||||
<a id="__codelineno-3-10" name="__codelineno-3-10" href="#__codelineno-3-10"></a><span class="w"> </span><span class="k">public</span><span class="w"> </span><span class="nf">HashMapChaining</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-3-11" name="__codelineno-3-11" href="#__codelineno-3-11"></a><span class="w"> </span><span class="n">size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-3-12" name="__codelineno-3-12" href="#__codelineno-3-12"></a><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">4</span><span class="p">;</span>
|
||||
<a id="__codelineno-3-13" name="__codelineno-3-13" href="#__codelineno-3-13"></a><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">2</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="m">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-3-13" name="__codelineno-3-13" href="#__codelineno-3-13"></a><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="m">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-3-14" name="__codelineno-3-14" href="#__codelineno-3-14"></a><span class="w"> </span><span class="n">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">2</span><span class="p">;</span>
|
||||
<a id="__codelineno-3-15" name="__codelineno-3-15" href="#__codelineno-3-15"></a><span class="w"> </span><span class="n">buckets</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">List</span><span class="o"><</span><span class="n">List</span><span class="o"><</span><span class="n">Pair</span><span class="o">>></span><span class="p">(</span><span class="n">capacity</span><span class="p">);</span>
|
||||
<a id="__codelineno-3-16" name="__codelineno-3-16" href="#__codelineno-3-16"></a><span class="w"> </span><span class="k">for</span><span class="w"> </span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">0</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="w"> </span><span class="o"><</span><span class="w"> </span><span class="n">capacity</span><span class="p">;</span><span class="w"> </span><span class="n">i</span><span class="o">++</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
|
||||
@ -3846,7 +3846,7 @@
|
||||
<a id="__codelineno-4-16" name="__codelineno-4-16" href="#__codelineno-4-16"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&</span><span class="nx">hashMapChaining</span><span class="p">{</span>
|
||||
<a id="__codelineno-4-17" name="__codelineno-4-17" href="#__codelineno-4-17"></a><span class="w"> </span><span class="nx">size</span><span class="p">:</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span>
|
||||
<a id="__codelineno-4-18" name="__codelineno-4-18" href="#__codelineno-4-18"></a><span class="w"> </span><span class="nx">capacity</span><span class="p">:</span><span class="w"> </span><span class="mi">4</span><span class="p">,</span>
|
||||
<a id="__codelineno-4-19" name="__codelineno-4-19" href="#__codelineno-4-19"></a><span class="w"> </span><span class="nx">loadThres</span><span class="p">:</span><span class="w"> </span><span class="mi">2</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">,</span>
|
||||
<a id="__codelineno-4-19" name="__codelineno-4-19" href="#__codelineno-4-19"></a><span class="w"> </span><span class="nx">loadThres</span><span class="p">:</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">,</span>
|
||||
<a id="__codelineno-4-20" name="__codelineno-4-20" href="#__codelineno-4-20"></a><span class="w"> </span><span class="nx">extendRatio</span><span class="p">:</span><span class="w"> </span><span class="mi">2</span><span class="p">,</span>
|
||||
<a id="__codelineno-4-21" name="__codelineno-4-21" href="#__codelineno-4-21"></a><span class="w"> </span><span class="nx">buckets</span><span class="p">:</span><span class="w"> </span><span class="nx">buckets</span><span class="p">,</span>
|
||||
<a id="__codelineno-4-22" name="__codelineno-4-22" href="#__codelineno-4-22"></a><span class="w"> </span><span class="p">}</span>
|
||||
@ -3965,7 +3965,7 @@
|
||||
<a id="__codelineno-5-10" name="__codelineno-5-10" href="#__codelineno-5-10"></a> <span class="kd">init</span><span class="p">()</span> <span class="p">{</span>
|
||||
<a id="__codelineno-5-11" name="__codelineno-5-11" href="#__codelineno-5-11"></a> <span class="n">size</span> <span class="p">=</span> <span class="mi">0</span>
|
||||
<a id="__codelineno-5-12" name="__codelineno-5-12" href="#__codelineno-5-12"></a> <span class="n">capacity</span> <span class="p">=</span> <span class="mi">4</span>
|
||||
<a id="__codelineno-5-13" name="__codelineno-5-13" href="#__codelineno-5-13"></a> <span class="n">loadThres</span> <span class="p">=</span> <span class="mi">2</span> <span class="o">/</span> <span class="mi">3</span>
|
||||
<a id="__codelineno-5-13" name="__codelineno-5-13" href="#__codelineno-5-13"></a> <span class="n">loadThres</span> <span class="p">=</span> <span class="mf">2.0</span> <span class="o">/</span> <span class="mf">3.0</span>
|
||||
<a id="__codelineno-5-14" name="__codelineno-5-14" href="#__codelineno-5-14"></a> <span class="n">extendRatio</span> <span class="p">=</span> <span class="mi">2</span>
|
||||
<a id="__codelineno-5-15" name="__codelineno-5-15" href="#__codelineno-5-15"></a> <span class="n">buckets</span> <span class="p">=</span> <span class="nb">Array</span><span class="p">(</span><span class="n">repeating</span><span class="p">:</span> <span class="p">[],</span> <span class="bp">count</span><span class="p">:</span> <span class="n">capacity</span><span class="p">)</span>
|
||||
<a id="__codelineno-5-16" name="__codelineno-5-16" href="#__codelineno-5-16"></a> <span class="p">}</span>
|
||||
@ -4067,7 +4067,7 @@
|
||||
<a id="__codelineno-6-10" name="__codelineno-6-10" href="#__codelineno-6-10"></a><span class="w"> </span><span class="kr">constructor</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-6-11" name="__codelineno-6-11" href="#__codelineno-6-11"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-6-12" name="__codelineno-6-12" href="#__codelineno-6-12"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">4</span><span class="p">;</span>
|
||||
<a id="__codelineno-6-13" name="__codelineno-6-13" href="#__codelineno-6-13"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-6-13" name="__codelineno-6-13" href="#__codelineno-6-13"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-6-14" name="__codelineno-6-14" href="#__codelineno-6-14"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2</span><span class="p">;</span>
|
||||
<a id="__codelineno-6-15" name="__codelineno-6-15" href="#__codelineno-6-15"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">buckets</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="nb">Array</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">capacity</span><span class="p">).</span><span class="nx">fill</span><span class="p">(</span><span class="kc">null</span><span class="p">).</span><span class="nx">map</span><span class="p">((</span><span class="nx">x</span><span class="p">)</span><span class="w"> </span><span class="p">=></span><span class="w"> </span><span class="p">[]);</span>
|
||||
<a id="__codelineno-6-16" name="__codelineno-6-16" href="#__codelineno-6-16"></a><span class="w"> </span><span class="p">}</span>
|
||||
@ -4173,7 +4173,7 @@
|
||||
<a id="__codelineno-7-10" name="__codelineno-7-10" href="#__codelineno-7-10"></a><span class="w"> </span><span class="kr">constructor</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-7-11" name="__codelineno-7-11" href="#__codelineno-7-11"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-7-12" name="__codelineno-7-12" href="#__codelineno-7-12"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">4</span><span class="p">;</span>
|
||||
<a id="__codelineno-7-13" name="__codelineno-7-13" href="#__codelineno-7-13"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-7-13" name="__codelineno-7-13" href="#__codelineno-7-13"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-7-14" name="__codelineno-7-14" href="#__codelineno-7-14"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2</span><span class="p">;</span>
|
||||
<a id="__codelineno-7-15" name="__codelineno-7-15" href="#__codelineno-7-15"></a><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">buckets</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="ow">new</span><span class="w"> </span><span class="nb">Array</span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="err">#</span><span class="nx">capacity</span><span class="p">).</span><span class="nx">fill</span><span class="p">(</span><span class="kc">null</span><span class="p">).</span><span class="nx">map</span><span class="p">((</span><span class="nx">x</span><span class="p">)</span><span class="w"> </span><span class="p">=></span><span class="w"> </span><span class="p">[]);</span>
|
||||
<a id="__codelineno-7-16" name="__codelineno-7-16" href="#__codelineno-7-16"></a><span class="w"> </span><span class="p">}</span>
|
||||
@ -4279,7 +4279,7 @@
|
||||
<a id="__codelineno-8-10" name="__codelineno-8-10" href="#__codelineno-8-10"></a><span class="w"> </span><span class="n">HashMapChaining</span><span class="p">()</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-8-11" name="__codelineno-8-11" href="#__codelineno-8-11"></a><span class="w"> </span><span class="n">size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-8-12" name="__codelineno-8-12" href="#__codelineno-8-12"></a><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">4</span><span class="p">;</span>
|
||||
<a id="__codelineno-8-13" name="__codelineno-8-13" href="#__codelineno-8-13"></a><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">2</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="m">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-8-13" name="__codelineno-8-13" href="#__codelineno-8-13"></a><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="m">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-8-14" name="__codelineno-8-14" href="#__codelineno-8-14"></a><span class="w"> </span><span class="n">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">2</span><span class="p">;</span>
|
||||
<a id="__codelineno-8-15" name="__codelineno-8-15" href="#__codelineno-8-15"></a><span class="w"> </span><span class="n">buckets</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">List</span><span class="p">.</span><span class="n">generate</span><span class="p">(</span><span class="n">capacity</span><span class="p">,</span><span class="w"> </span><span class="p">(</span><span class="n">_</span><span class="p">)</span><span class="w"> </span><span class="o">=></span><span class="w"> </span><span class="p">[]);</span>
|
||||
<a id="__codelineno-8-16" name="__codelineno-8-16" href="#__codelineno-8-16"></a><span class="w"> </span><span class="p">}</span>
|
||||
@ -4522,7 +4522,7 @@
|
||||
<a id="__codelineno-10-22" name="__codelineno-10-22" href="#__codelineno-10-22"></a><span class="w"> </span><span class="n">hashmap</span><span class="o">-></span><span class="n">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">tableSize</span><span class="p">;</span>
|
||||
<a id="__codelineno-10-23" name="__codelineno-10-23" href="#__codelineno-10-23"></a><span class="w"> </span><span class="n">hashmap</span><span class="o">-></span><span class="n">size</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span><span class="p">;</span>
|
||||
<a id="__codelineno-10-24" name="__codelineno-10-24" href="#__codelineno-10-24"></a><span class="w"> </span><span class="n">hashmap</span><span class="o">-></span><span class="n">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span>
|
||||
<a id="__codelineno-10-25" name="__codelineno-10-25" href="#__codelineno-10-25"></a><span class="w"> </span><span class="n">hashmap</span><span class="o">-></span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span>
|
||||
<a id="__codelineno-10-25" name="__codelineno-10-25" href="#__codelineno-10-25"></a><span class="w"> </span><span class="n">hashmap</span><span class="o">-></span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">;</span>
|
||||
<a id="__codelineno-10-26" name="__codelineno-10-26" href="#__codelineno-10-26"></a>
|
||||
<a id="__codelineno-10-27" name="__codelineno-10-27" href="#__codelineno-10-27"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="n">hashmap</span><span class="p">;</span>
|
||||
<a id="__codelineno-10-28" name="__codelineno-10-28" href="#__codelineno-10-28"></a><span class="p">}</span>
|
||||
@ -4712,7 +4712,7 @@
|
||||
<a id="__codelineno-12-5" name="__codelineno-12-5" href="#__codelineno-12-5"></a><span class="w"> </span><span class="sd">"""构造方法"""</span>
|
||||
<a id="__codelineno-12-6" name="__codelineno-12-6" href="#__codelineno-12-6"></a> <span class="bp">self</span><span class="o">.</span><span class="n">size</span> <span class="o">=</span> <span class="mi">0</span> <span class="c1"># 键值对数量</span>
|
||||
<a id="__codelineno-12-7" name="__codelineno-12-7" href="#__codelineno-12-7"></a> <span class="bp">self</span><span class="o">.</span><span class="n">capacity</span> <span class="o">=</span> <span class="mi">4</span> <span class="c1"># 哈希表容量</span>
|
||||
<a id="__codelineno-12-8" name="__codelineno-12-8" href="#__codelineno-12-8"></a> <span class="bp">self</span><span class="o">.</span><span class="n">load_thres</span> <span class="o">=</span> <span class="mi">2</span> <span class="o">/</span> <span class="mi">3</span> <span class="c1"># 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-12-8" name="__codelineno-12-8" href="#__codelineno-12-8"></a> <span class="bp">self</span><span class="o">.</span><span class="n">load_thres</span> <span class="o">=</span> <span class="mf">2.0</span> <span class="o">/</span> <span class="mf">3.0</span> <span class="c1"># 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-12-9" name="__codelineno-12-9" href="#__codelineno-12-9"></a> <span class="bp">self</span><span class="o">.</span><span class="n">extend_ratio</span> <span class="o">=</span> <span class="mi">2</span> <span class="c1"># 扩容倍数</span>
|
||||
<a id="__codelineno-12-10" name="__codelineno-12-10" href="#__codelineno-12-10"></a> <span class="bp">self</span><span class="o">.</span><span class="n">buckets</span><span class="p">:</span> <span class="nb">list</span><span class="p">[</span><span class="n">Pair</span> <span class="o">|</span> <span class="kc">None</span><span class="p">]</span> <span class="o">=</span> <span class="p">[</span><span class="kc">None</span><span class="p">]</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">capacity</span> <span class="c1"># 桶数组</span>
|
||||
<a id="__codelineno-12-11" name="__codelineno-12-11" href="#__codelineno-12-11"></a> <span class="bp">self</span><span class="o">.</span><span class="n">TOMBSTONE</span> <span class="o">=</span> <span class="n">Pair</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="s2">"-1"</span><span class="p">)</span> <span class="c1"># 删除标记</span>
|
||||
@ -4811,7 +4811,7 @@
|
||||
<a id="__codelineno-13-3" name="__codelineno-13-3" href="#__codelineno-13-3"></a><span class="w"> </span><span class="k">private</span><span class="o">:</span>
|
||||
<a id="__codelineno-13-4" name="__codelineno-13-4" href="#__codelineno-13-4"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">size</span><span class="p">;</span><span class="w"> </span><span class="c1">// 键值对数量</span>
|
||||
<a id="__codelineno-13-5" name="__codelineno-13-5" href="#__codelineno-13-5"></a><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4</span><span class="p">;</span><span class="w"> </span><span class="c1">// 哈希表容量</span>
|
||||
<a id="__codelineno-13-6" name="__codelineno-13-6" href="#__codelineno-13-6"></a><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="kt">double</span><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span><span class="w"> </span><span class="c1">// 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-13-6" name="__codelineno-13-6" href="#__codelineno-13-6"></a><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="kt">double</span><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">;</span><span class="w"> </span><span class="c1">// 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-13-7" name="__codelineno-13-7" href="#__codelineno-13-7"></a><span class="w"> </span><span class="k">const</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span><span class="w"> </span><span class="c1">// 扩容倍数</span>
|
||||
<a id="__codelineno-13-8" name="__codelineno-13-8" href="#__codelineno-13-8"></a><span class="w"> </span><span class="n">vector</span><span class="o"><</span><span class="n">Pair</span><span class="w"> </span><span class="o">*></span><span class="w"> </span><span class="n">buckets</span><span class="p">;</span><span class="w"> </span><span class="c1">// 桶数组</span>
|
||||
<a id="__codelineno-13-9" name="__codelineno-13-9" href="#__codelineno-13-9"></a><span class="w"> </span><span class="n">Pair</span><span class="w"> </span><span class="o">*</span><span class="n">TOMBSTONE</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">Pair</span><span class="p">(</span><span class="mi">-1</span><span class="p">,</span><span class="w"> </span><span class="s">"-1"</span><span class="p">);</span><span class="w"> </span><span class="c1">// 删除标记</span>
|
||||
@ -4947,7 +4947,7 @@
|
||||
<a id="__codelineno-14-2" name="__codelineno-14-2" href="#__codelineno-14-2"></a><span class="kd">class</span> <span class="nc">HashMapOpenAddressing</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-14-3" name="__codelineno-14-3" href="#__codelineno-14-3"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">size</span><span class="p">;</span><span class="w"> </span><span class="c1">// 键值对数量</span>
|
||||
<a id="__codelineno-14-4" name="__codelineno-14-4" href="#__codelineno-14-4"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">4</span><span class="p">;</span><span class="w"> </span><span class="c1">// 哈希表容量</span>
|
||||
<a id="__codelineno-14-5" name="__codelineno-14-5" href="#__codelineno-14-5"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kd">final</span><span class="w"> </span><span class="kt">double</span><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mi">3</span><span class="p">;</span><span class="w"> </span><span class="c1">// 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-14-5" name="__codelineno-14-5" href="#__codelineno-14-5"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kd">final</span><span class="w"> </span><span class="kt">double</span><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">;</span><span class="w"> </span><span class="c1">// 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-14-6" name="__codelineno-14-6" href="#__codelineno-14-6"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kd">final</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">2</span><span class="p">;</span><span class="w"> </span><span class="c1">// 扩容倍数</span>
|
||||
<a id="__codelineno-14-7" name="__codelineno-14-7" href="#__codelineno-14-7"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="n">Pair</span><span class="o">[]</span><span class="w"> </span><span class="n">buckets</span><span class="p">;</span><span class="w"> </span><span class="c1">// 桶数组</span>
|
||||
<a id="__codelineno-14-8" name="__codelineno-14-8" href="#__codelineno-14-8"></a><span class="w"> </span><span class="kd">private</span><span class="w"> </span><span class="kd">final</span><span class="w"> </span><span class="n">Pair</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">Pair</span><span class="p">(</span><span class="o">-</span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="s">"-1"</span><span class="p">);</span><span class="w"> </span><span class="c1">// 删除标记</span>
|
||||
@ -5072,7 +5072,7 @@
|
||||
<a id="__codelineno-15-2" name="__codelineno-15-2" href="#__codelineno-15-2"></a><span class="k">class</span><span class="w"> </span><span class="nc">HashMapOpenAddressing</span><span class="w"> </span><span class="p">{</span>
|
||||
<a id="__codelineno-15-3" name="__codelineno-15-3" href="#__codelineno-15-3"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">size</span><span class="p">;</span><span class="w"> </span><span class="c1">// 键值对数量</span>
|
||||
<a id="__codelineno-15-4" name="__codelineno-15-4" href="#__codelineno-15-4"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">capacity</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">4</span><span class="p">;</span><span class="w"> </span><span class="c1">// 哈希表容量</span>
|
||||
<a id="__codelineno-15-5" name="__codelineno-15-5" href="#__codelineno-15-5"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="kt">double</span><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="m">3</span><span class="p">;</span><span class="w"> </span><span class="c1">// 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-15-5" name="__codelineno-15-5" href="#__codelineno-15-5"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="kt">double</span><span class="w"> </span><span class="n">loadThres</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="m">3.0</span><span class="p">;</span><span class="w"> </span><span class="c1">// 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-15-6" name="__codelineno-15-6" href="#__codelineno-15-6"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="kt">int</span><span class="w"> </span><span class="n">extendRatio</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="m">2</span><span class="p">;</span><span class="w"> </span><span class="c1">// 扩容倍数</span>
|
||||
<a id="__codelineno-15-7" name="__codelineno-15-7" href="#__codelineno-15-7"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="n">Pair</span><span class="p">[]</span><span class="w"> </span><span class="n">buckets</span><span class="p">;</span><span class="w"> </span><span class="c1">// 桶数组</span>
|
||||
<a id="__codelineno-15-8" name="__codelineno-15-8" href="#__codelineno-15-8"></a><span class="w"> </span><span class="k">private</span><span class="w"> </span><span class="n">Pair</span><span class="w"> </span><span class="n">TOMBSTONE</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">new</span><span class="w"> </span><span class="n">Pair</span><span class="p">(</span><span class="o">-</span><span class="m">1</span><span class="p">,</span><span class="w"> </span><span class="s">"-1"</span><span class="p">);</span><span class="w"> </span><span class="c1">// 删除标记</span>
|
||||
@ -5209,7 +5209,7 @@
|
||||
<a id="__codelineno-16-14" name="__codelineno-16-14" href="#__codelineno-16-14"></a><span class="w"> </span><span class="k">return</span><span class="w"> </span><span class="o">&</span><span class="nx">hashMapOpenAddressing</span><span class="p">{</span>
|
||||
<a id="__codelineno-16-15" name="__codelineno-16-15" href="#__codelineno-16-15"></a><span class="w"> </span><span class="nx">size</span><span class="p">:</span><span class="w"> </span><span class="mi">0</span><span class="p">,</span>
|
||||
<a id="__codelineno-16-16" name="__codelineno-16-16" href="#__codelineno-16-16"></a><span class="w"> </span><span class="nx">capacity</span><span class="p">:</span><span class="w"> </span><span class="mi">4</span><span class="p">,</span>
|
||||
<a id="__codelineno-16-17" name="__codelineno-16-17" href="#__codelineno-16-17"></a><span class="w"> </span><span class="nx">loadThres</span><span class="p">:</span><span class="w"> </span><span class="mi">2</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">,</span>
|
||||
<a id="__codelineno-16-17" name="__codelineno-16-17" href="#__codelineno-16-17"></a><span class="w"> </span><span class="nx">loadThres</span><span class="p">:</span><span class="w"> </span><span class="mf">2.0</span><span class="w"> </span><span class="o">/</span><span class="w"> </span><span class="mf">3.0</span><span class="p">,</span>
|
||||
<a id="__codelineno-16-18" name="__codelineno-16-18" href="#__codelineno-16-18"></a><span class="w"> </span><span class="nx">extendRatio</span><span class="p">:</span><span class="w"> </span><span class="mi">2</span><span class="p">,</span>
|
||||
<a id="__codelineno-16-19" name="__codelineno-16-19" href="#__codelineno-16-19"></a><span class="w"> </span><span class="nx">buckets</span><span class="p">:</span><span class="w"> </span><span class="nx">buckets</span><span class="p">,</span>
|
||||
<a id="__codelineno-16-20" name="__codelineno-16-20" href="#__codelineno-16-20"></a><span class="w"> </span><span class="nx">removed</span><span class="p">:</span><span class="w"> </span><span class="nx">pair</span><span class="p">{</span>
|
||||
@ -5334,16 +5334,16 @@
|
||||
<a id="__codelineno-17-5" name="__codelineno-17-5" href="#__codelineno-17-5"></a> <span class="kd">var</span> <span class="nv">loadThres</span><span class="p">:</span> <span class="nb">Double</span> <span class="c1">// 触发扩容的负载因子阈值</span>
|
||||
<a id="__codelineno-17-6" name="__codelineno-17-6" href="#__codelineno-17-6"></a> <span class="kd">var</span> <span class="nv">extendRatio</span><span class="p">:</span> <span class="nb">Int</span> <span class="c1">// 扩容倍数</span>
|
||||
<a id="__codelineno-17-7" name="__codelineno-17-7" href="#__codelineno-17-7"></a> <span class="kd">var</span> <span class="nv">buckets</span><span class="p">:</span> <span class="p">[</span><span class="n">Pair</span><span class="p">?]</span> <span class="c1">// 桶数组</span>
|
||||
<a id="__codelineno-17-8" name="__codelineno-17-8" href="#__codelineno-17-8"></a> <span class="kd">var</span> <span class="nv">removed</span><span class="p">:</span> <span class="n">Pair</span> <span class="c1">// 删除标记</span>
|
||||
<a id="__codelineno-17-8" name="__codelineno-17-8" href="#__codelineno-17-8"></a> <span class="kd">var</span> <span class="nv">TOMBSTONE</span><span class="p">:</span> <span class="n">Pair</span> <span class="c1">// 删除标记</span>
|
||||
<a id="__codelineno-17-9" name="__codelineno-17-9" href="#__codelineno-17-9"></a>
|
||||
<a id="__codelineno-17-10" name="__codelineno-17-10" href="#__codelineno-17-10"></a> <span class="cm">/* 构造方法 */</span>
|
||||
<a id="__codelineno-17-11" name="__codelineno-17-11" href="#__codelineno-17-11"></a> <span class="kd">init</span><span class="p">()</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-12" name="__codelineno-17-12" href="#__codelineno-17-12"></a> <span class="n">size</span> <span class="p">=</span> <span class="mi">0</span>
|
||||
<a id="__codelineno-17-13" name="__codelineno-17-13" href="#__codelineno-17-13"></a> <span class="n">capacity</span> <span class="p">=</span> <span class="mi">4</span>
|
||||
<a id="__codelineno-17-14" name="__codelineno-17-14" href="#__codelineno-17-14"></a> <span class="n">loadThres</span> <span class="p">=</span> <span class="mi">2</span> <span class="o">/</span> <span class="mi">3</span>
|
||||
<a id="__codelineno-17-14" name="__codelineno-17-14" href="#__codelineno-17-14"></a> <span class="n">loadThres</span> <span class="p">=</span> <span class="mf">2.0</span> <span class="o">/</span> <span class="mf">3.0</span>
|
||||
<a id="__codelineno-17-15" name="__codelineno-17-15" href="#__codelineno-17-15"></a> <span class="n">extendRatio</span> <span class="p">=</span> <span class="mi">2</span>
|
||||
<a id="__codelineno-17-16" name="__codelineno-17-16" href="#__codelineno-17-16"></a> <span class="n">buckets</span> <span class="p">=</span> <span class="nb">Array</span><span class="p">(</span><span class="n">repeating</span><span class="p">:</span> <span class="kc">nil</span><span class="p">,</span> <span class="bp">count</span><span class="p">:</span> <span class="n">capacity</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-17" name="__codelineno-17-17" href="#__codelineno-17-17"></a> <span class="n">removed</span> <span class="p">=</span> <span class="n">Pair</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="n">val</span><span class="p">:</span> <span class="s">"-1"</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-17" name="__codelineno-17-17" href="#__codelineno-17-17"></a> <span class="n">TOMBSTONE</span> <span class="p">=</span> <span class="n">Pair</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="o">-</span><span class="mi">1</span><span class="p">,</span> <span class="n">val</span><span class="p">:</span> <span class="s">"-1"</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-18" name="__codelineno-17-18" href="#__codelineno-17-18"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-19" name="__codelineno-17-19" href="#__codelineno-17-19"></a>
|
||||
<a id="__codelineno-17-20" name="__codelineno-17-20" href="#__codelineno-17-20"></a> <span class="cm">/* 哈希函数 */</span>
|
||||
@ -5356,97 +5356,103 @@
|
||||
<a id="__codelineno-17-27" name="__codelineno-17-27" href="#__codelineno-17-27"></a> <span class="nb">Double</span><span class="p">(</span><span class="n">size</span> <span class="o">/</span> <span class="n">capacity</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-28" name="__codelineno-17-28" href="#__codelineno-17-28"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-29" name="__codelineno-17-29" href="#__codelineno-17-29"></a>
|
||||
<a id="__codelineno-17-30" name="__codelineno-17-30" href="#__codelineno-17-30"></a> <span class="cm">/* 查询操作 */</span>
|
||||
<a id="__codelineno-17-31" name="__codelineno-17-31" href="#__codelineno-17-31"></a> <span class="kd">func</span> <span class="nf">get</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="nb">Int</span><span class="p">)</span> <span class="p">-></span> <span class="nb">String</span><span class="p">?</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-32" name="__codelineno-17-32" href="#__codelineno-17-32"></a> <span class="kd">let</span> <span class="nv">index</span> <span class="p">=</span> <span class="n">hashFunc</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">key</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-33" name="__codelineno-17-33" href="#__codelineno-17-33"></a> <span class="c1">// 线性探测，从 index 开始向后遍历</span>
|
||||
<a id="__codelineno-17-34" name="__codelineno-17-34" href="#__codelineno-17-34"></a> <span class="k">for</span> <span class="n">i</span> <span class="k">in</span> <span class="bp">stride</span><span class="p">(</span><span class="n">from</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span> <span class="n">to</span><span class="p">:</span> <span class="n">capacity</span><span class="p">,</span> <span class="n">by</span><span class="p">:</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-35" name="__codelineno-17-35" href="#__codelineno-17-35"></a> <span class="c1">// 计算桶索引，越过尾部返回头部</span>
|
||||
<a id="__codelineno-17-36" name="__codelineno-17-36" href="#__codelineno-17-36"></a> <span class="kd">let</span> <span class="nv">j</span> <span class="p">=</span> <span class="p">(</span><span class="n">index</span> <span class="o">+</span> <span class="n">i</span><span class="p">)</span> <span class="o">%</span> <span class="n">capacity</span>
|
||||
<a id="__codelineno-17-37" name="__codelineno-17-37" href="#__codelineno-17-37"></a> <span class="c1">// 若遇到空桶，说明无此 key ，则返回 nil</span>
|
||||
<a id="__codelineno-17-38" name="__codelineno-17-38" href="#__codelineno-17-38"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]</span> <span class="p">==</span> <span class="kc">nil</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-39" name="__codelineno-17-39" href="#__codelineno-17-39"></a> <span class="k">return</span> <span class="kc">nil</span>
|
||||
<a id="__codelineno-17-40" name="__codelineno-17-40" href="#__codelineno-17-40"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-41" name="__codelineno-17-41" href="#__codelineno-17-41"></a> <span class="c1">// 若遇到指定 key ，则返回对应 val</span>
|
||||
<a id="__codelineno-17-42" name="__codelineno-17-42" href="#__codelineno-17-42"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]?.</span><span class="n">key</span> <span class="p">==</span> <span class="n">key</span><span class="p">,</span> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]</span> <span class="o">!=</span> <span class="n">removed</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-43" name="__codelineno-17-43" href="#__codelineno-17-43"></a> <span class="k">return</span> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]?.</span><span class="n">val</span>
|
||||
<a id="__codelineno-17-44" name="__codelineno-17-44" href="#__codelineno-17-44"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-30" name="__codelineno-17-30" href="#__codelineno-17-30"></a> <span class="cm">/* 搜索 key 对应的桶索引 */</span>
|
||||
<a id="__codelineno-17-31" name="__codelineno-17-31" href="#__codelineno-17-31"></a> <span class="kd">func</span> <span class="nf">findBucket</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="nb">Int</span><span class="p">)</span> <span class="p">-></span> <span class="nb">Int</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-32" name="__codelineno-17-32" href="#__codelineno-17-32"></a> <span class="kd">var</span> <span class="nv">index</span> <span class="p">=</span> <span class="n">hashFunc</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">key</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-33" name="__codelineno-17-33" href="#__codelineno-17-33"></a> <span class="kd">var</span> <span class="nv">firstTombstone</span> <span class="p">=</span> <span class="o">-</span><span class="mi">1</span>
|
||||
<a id="__codelineno-17-34" name="__codelineno-17-34" href="#__codelineno-17-34"></a> <span class="c1">// 线性探测，当遇到空桶时跳出</span>
|
||||
<a id="__codelineno-17-35" name="__codelineno-17-35" href="#__codelineno-17-35"></a> <span class="k">while</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="o">!=</span> <span class="kc">nil</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-36" name="__codelineno-17-36" href="#__codelineno-17-36"></a> <span class="c1">// 若遇到 key ，返回对应桶索引</span>
|
||||
<a id="__codelineno-17-37" name="__codelineno-17-37" href="#__codelineno-17-37"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="o">!</span><span class="p">.</span><span class="n">key</span> <span class="p">==</span> <span class="n">key</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-38" name="__codelineno-17-38" href="#__codelineno-17-38"></a> <span class="c1">// 若之前遇到了删除标记，则将键值对移动至该索引</span>
|
||||
<a id="__codelineno-17-39" name="__codelineno-17-39" href="#__codelineno-17-39"></a> <span class="k">if</span> <span class="n">firstTombstone</span> <span class="o">!=</span> <span class="o">-</span><span class="mi">1</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-40" name="__codelineno-17-40" href="#__codelineno-17-40"></a> <span class="n">buckets</span><span class="p">[</span><span class="n">firstTombstone</span><span class="p">]</span> <span class="p">=</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span>
|
||||
<a id="__codelineno-17-41" name="__codelineno-17-41" href="#__codelineno-17-41"></a> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="p">=</span> <span class="n">TOMBSTONE</span>
|
||||
<a id="__codelineno-17-42" name="__codelineno-17-42" href="#__codelineno-17-42"></a> <span class="k">return</span> <span class="n">firstTombstone</span> <span class="c1">// 返回移动后的桶索引</span>
|
||||
<a id="__codelineno-17-43" name="__codelineno-17-43" href="#__codelineno-17-43"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-44" name="__codelineno-17-44" href="#__codelineno-17-44"></a> <span class="k">return</span> <span class="n">index</span> <span class="c1">// 返回桶索引</span>
|
||||
<a id="__codelineno-17-45" name="__codelineno-17-45" href="#__codelineno-17-45"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-46" name="__codelineno-17-46" href="#__codelineno-17-46"></a> <span class="k">return</span> <span class="kc">nil</span>
|
||||
<a id="__codelineno-17-47" name="__codelineno-17-47" href="#__codelineno-17-47"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-48" name="__codelineno-17-48" href="#__codelineno-17-48"></a>
|
||||
<a id="__codelineno-17-49" name="__codelineno-17-49" href="#__codelineno-17-49"></a> <span class="cm">/* 添加操作 */</span>
|
||||
<a id="__codelineno-17-50" name="__codelineno-17-50" href="#__codelineno-17-50"></a> <span class="kd">func</span> <span class="nf">put</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="nb">Int</span><span class="p">,</span> <span class="n">val</span><span class="p">:</span> <span class="nb">String</span><span class="p">)</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-51" name="__codelineno-17-51" href="#__codelineno-17-51"></a> <span class="c1">// 当负载因子超过阈值时，执行扩容</span>
|
||||
<a id="__codelineno-17-52" name="__codelineno-17-52" href="#__codelineno-17-52"></a> <span class="k">if</span> <span class="n">loadFactor</span><span class="p">()</span> <span class="o">></span> <span class="n">loadThres</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-53" name="__codelineno-17-53" href="#__codelineno-17-53"></a> <span class="bp">extend</span><span class="p">()</span>
|
||||
<a id="__codelineno-17-54" name="__codelineno-17-54" href="#__codelineno-17-54"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-55" name="__codelineno-17-55" href="#__codelineno-17-55"></a> <span class="kd">let</span> <span class="nv">index</span> <span class="p">=</span> <span class="n">hashFunc</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">key</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-56" name="__codelineno-17-56" href="#__codelineno-17-56"></a> <span class="c1">// 线性探测，从 index 开始向后遍历</span>
|
||||
<a id="__codelineno-17-57" name="__codelineno-17-57" href="#__codelineno-17-57"></a> <span class="k">for</span> <span class="n">i</span> <span class="k">in</span> <span class="bp">stride</span><span class="p">(</span><span class="n">from</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span> <span class="n">through</span><span class="p">:</span> <span class="n">capacity</span><span class="p">,</span> <span class="n">by</span><span class="p">:</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-58" name="__codelineno-17-58" href="#__codelineno-17-58"></a> <span class="c1">// 计算桶索引，越过尾部返回头部</span>
|
||||
<a id="__codelineno-17-59" name="__codelineno-17-59" href="#__codelineno-17-59"></a> <span class="kd">let</span> <span class="nv">j</span> <span class="p">=</span> <span class="p">(</span><span class="n">index</span> <span class="o">+</span> <span class="n">i</span><span class="p">)</span> <span class="o">%</span> <span class="n">capacity</span>
|
||||
<a id="__codelineno-17-60" name="__codelineno-17-60" href="#__codelineno-17-60"></a> <span class="c1">// 若遇到空桶、或带有删除标记的桶，则将键值对放入该桶</span>
|
||||
<a id="__codelineno-17-61" name="__codelineno-17-61" href="#__codelineno-17-61"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]</span> <span class="p">==</span> <span class="kc">nil</span> <span class="o">||</span> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]</span> <span class="p">==</span> <span class="n">removed</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-62" name="__codelineno-17-62" href="#__codelineno-17-62"></a> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]</span> <span class="p">=</span> <span class="n">Pair</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">key</span><span class="p">,</span> <span class="n">val</span><span class="p">:</span> <span class="n">val</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-63" name="__codelineno-17-63" href="#__codelineno-17-63"></a> <span class="n">size</span> <span class="o">+=</span> <span class="mi">1</span>
|
||||
<a id="__codelineno-17-64" name="__codelineno-17-64" href="#__codelineno-17-64"></a> <span class="k">return</span>
|
||||
<a id="__codelineno-17-65" name="__codelineno-17-65" href="#__codelineno-17-65"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-66" name="__codelineno-17-66" href="#__codelineno-17-66"></a> <span class="c1">// 若遇到指定 key ，则更新对应 val</span>
|
||||
<a id="__codelineno-17-67" name="__codelineno-17-67" href="#__codelineno-17-67"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]?.</span><span class="n">key</span> <span class="p">==</span> <span class="n">key</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-68" name="__codelineno-17-68" href="#__codelineno-17-68"></a> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]?.</span><span class="n">val</span> <span class="p">=</span> <span class="n">val</span>
|
||||
<a id="__codelineno-17-69" name="__codelineno-17-69" href="#__codelineno-17-69"></a> <span class="k">return</span>
|
||||
<a id="__codelineno-17-70" name="__codelineno-17-70" href="#__codelineno-17-70"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-71" name="__codelineno-17-71" href="#__codelineno-17-71"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-72" name="__codelineno-17-72" href="#__codelineno-17-72"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-73" name="__codelineno-17-73" href="#__codelineno-17-73"></a>
|
||||
<a id="__codelineno-17-74" name="__codelineno-17-74" href="#__codelineno-17-74"></a> <span class="cm">/* 删除操作 */</span>
|
||||
<a id="__codelineno-17-75" name="__codelineno-17-75" href="#__codelineno-17-75"></a> <span class="kd">func</span> <span class="nf">remove</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="nb">Int</span><span class="p">)</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-76" name="__codelineno-17-76" href="#__codelineno-17-76"></a> <span class="kd">let</span> <span class="nv">index</span> <span class="p">=</span> <span class="n">hashFunc</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">key</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-77" name="__codelineno-17-77" href="#__codelineno-17-77"></a> <span class="c1">// 线性探测，从 index 开始向后遍历</span>
|
||||
<a id="__codelineno-17-78" name="__codelineno-17-78" href="#__codelineno-17-78"></a> <span class="k">for</span> <span class="n">i</span> <span class="k">in</span> <span class="bp">stride</span><span class="p">(</span><span class="n">from</span><span class="p">:</span> <span class="mi">0</span><span class="p">,</span> <span class="n">to</span><span class="p">:</span> <span class="n">capacity</span><span class="p">,</span> <span class="n">by</span><span class="p">:</span> <span class="mi">1</span><span class="p">)</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-79" name="__codelineno-17-79" href="#__codelineno-17-79"></a> <span class="c1">// 计算桶索引，越过尾部返回头部</span>
|
||||
<a id="__codelineno-17-80" name="__codelineno-17-80" href="#__codelineno-17-80"></a> <span class="kd">let</span> <span class="nv">j</span> <span class="p">=</span> <span class="p">(</span><span class="n">index</span> <span class="o">+</span> <span class="n">i</span><span class="p">)</span> <span class="o">%</span> <span class="n">capacity</span>
|
||||
<a id="__codelineno-17-81" name="__codelineno-17-81" href="#__codelineno-17-81"></a> <span class="c1">// 若遇到空桶，说明无此 key ，则直接返回</span>
|
||||
<a id="__codelineno-17-82" name="__codelineno-17-82" href="#__codelineno-17-82"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]</span> <span class="p">==</span> <span class="kc">nil</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-83" name="__codelineno-17-83" href="#__codelineno-17-83"></a> <span class="k">return</span>
|
||||
<a id="__codelineno-17-84" name="__codelineno-17-84" href="#__codelineno-17-84"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-85" name="__codelineno-17-85" href="#__codelineno-17-85"></a> <span class="c1">// 若遇到指定 key ，则标记删除并返回</span>
|
||||
<a id="__codelineno-17-86" name="__codelineno-17-86" href="#__codelineno-17-86"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]?.</span><span class="n">key</span> <span class="p">==</span> <span class="n">key</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-87" name="__codelineno-17-87" href="#__codelineno-17-87"></a> <span class="n">buckets</span><span class="p">[</span><span class="n">j</span><span class="p">]</span> <span class="p">=</span> <span class="n">removed</span>
|
||||
<a id="__codelineno-17-88" name="__codelineno-17-88" href="#__codelineno-17-88"></a> <span class="n">size</span> <span class="o">-=</span> <span class="mi">1</span>
|
||||
<a id="__codelineno-17-89" name="__codelineno-17-89" href="#__codelineno-17-89"></a> <span class="k">return</span>
|
||||
<a id="__codelineno-17-90" name="__codelineno-17-90" href="#__codelineno-17-90"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-91" name="__codelineno-17-91" href="#__codelineno-17-91"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-92" name="__codelineno-17-92" href="#__codelineno-17-92"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-93" name="__codelineno-17-93" href="#__codelineno-17-93"></a>
|
||||
<a id="__codelineno-17-94" name="__codelineno-17-94" href="#__codelineno-17-94"></a> <span class="cm">/* 扩容哈希表 */</span>
|
||||
<a id="__codelineno-17-95" name="__codelineno-17-95" href="#__codelineno-17-95"></a> <span class="kd">func</span> <span class="nf">extend</span><span class="p">()</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-96" name="__codelineno-17-96" href="#__codelineno-17-96"></a> <span class="c1">// 暂存原哈希表</span>
|
||||
<a id="__codelineno-17-97" name="__codelineno-17-97" href="#__codelineno-17-97"></a> <span class="kd">let</span> <span class="nv">bucketsTmp</span> <span class="p">=</span> <span class="n">buckets</span>
|
||||
<a id="__codelineno-17-98" name="__codelineno-17-98" href="#__codelineno-17-98"></a> <span class="c1">// 初始化扩容后的新哈希表</span>
|
||||
<a id="__codelineno-17-99" name="__codelineno-17-99" href="#__codelineno-17-99"></a> <span class="n">capacity</span> <span class="o">*=</span> <span class="n">extendRatio</span>
|
||||
<a id="__codelineno-17-100" name="__codelineno-17-100" href="#__codelineno-17-100"></a> <span class="n">buckets</span> <span class="p">=</span> <span class="nb">Array</span><span class="p">(</span><span class="n">repeating</span><span class="p">:</span> <span class="kc">nil</span><span class="p">,</span> <span class="bp">count</span><span class="p">:</span> <span class="n">capacity</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-101" name="__codelineno-17-101" href="#__codelineno-17-101"></a> <span class="n">size</span> <span class="p">=</span> <span class="mi">0</span>
|
||||
<a id="__codelineno-17-102" name="__codelineno-17-102" href="#__codelineno-17-102"></a> <span class="c1">// 将键值对从原哈希表搬运至新哈希表</span>
|
||||
<a id="__codelineno-17-103" name="__codelineno-17-103" href="#__codelineno-17-103"></a> <span class="k">for</span> <span class="n">pair</span> <span class="k">in</span> <span class="n">bucketsTmp</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-104" name="__codelineno-17-104" href="#__codelineno-17-104"></a> <span class="k">if</span> <span class="kd">let</span> <span class="nv">pair</span><span class="p">,</span> <span class="n">pair</span> <span class="o">!=</span> <span class="n">removed</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-105" name="__codelineno-17-105" href="#__codelineno-17-105"></a> <span class="n">put</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">pair</span><span class="p">.</span><span class="n">key</span><span class="p">,</span> <span class="n">val</span><span class="p">:</span> <span class="n">pair</span><span class="p">.</span><span class="n">val</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-106" name="__codelineno-17-106" href="#__codelineno-17-106"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-107" name="__codelineno-17-107" href="#__codelineno-17-107"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-108" name="__codelineno-17-108" href="#__codelineno-17-108"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-109" name="__codelineno-17-109" href="#__codelineno-17-109"></a>
|
||||
<a id="__codelineno-17-110" name="__codelineno-17-110" href="#__codelineno-17-110"></a> <span class="cm">/* 打印哈希表 */</span>
|
||||
<a id="__codelineno-17-111" name="__codelineno-17-111" href="#__codelineno-17-111"></a> <span class="kd">func</span> <span class="nf">print</span><span class="p">()</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-112" name="__codelineno-17-112" href="#__codelineno-17-112"></a> <span class="k">for</span> <span class="n">pair</span> <span class="k">in</span> <span class="n">buckets</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-113" name="__codelineno-17-113" href="#__codelineno-17-113"></a> <span class="k">if</span> <span class="kd">let</span> <span class="nv">pair</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-114" name="__codelineno-17-114" href="#__codelineno-17-114"></a> <span class="n">Swift</span><span class="p">.</span><span class="bp">print</span><span class="p">(</span><span class="s">"</span><span class="si">\(</span><span class="n">pair</span><span class="p">.</span><span class="n">key</span><span class="si">)</span><span class="s"> -> </span><span class="si">\(</span><span class="n">pair</span><span class="p">.</span><span class="n">val</span><span class="si">)</span><span class="s">"</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-115" name="__codelineno-17-115" href="#__codelineno-17-115"></a> <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-116" name="__codelineno-17-116" href="#__codelineno-17-116"></a> <span class="n">Swift</span><span class="p">.</span><span class="bp">print</span><span class="p">(</span><span class="s">"null"</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-117" name="__codelineno-17-117" href="#__codelineno-17-117"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-118" name="__codelineno-17-118" href="#__codelineno-17-118"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-119" name="__codelineno-17-119" href="#__codelineno-17-119"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-120" name="__codelineno-17-120" href="#__codelineno-17-120"></a><span class="p">}</span>
|
||||
<a id="__codelineno-17-46" name="__codelineno-17-46" href="#__codelineno-17-46"></a> <span class="c1">// 记录遇到的首个删除标记</span>
|
||||
<a id="__codelineno-17-47" name="__codelineno-17-47" href="#__codelineno-17-47"></a> <span class="k">if</span> <span class="n">firstTombstone</span> <span class="p">==</span> <span class="o">-</span><span class="mi">1</span> <span class="o">&&</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="p">==</span> <span class="n">TOMBSTONE</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-48" name="__codelineno-17-48" href="#__codelineno-17-48"></a> <span class="n">firstTombstone</span> <span class="p">=</span> <span class="n">index</span>
|
||||
<a id="__codelineno-17-49" name="__codelineno-17-49" href="#__codelineno-17-49"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-50" name="__codelineno-17-50" href="#__codelineno-17-50"></a> <span class="c1">// 计算桶索引，越过尾部返回头部</span>
|
||||
<a id="__codelineno-17-51" name="__codelineno-17-51" href="#__codelineno-17-51"></a> <span class="n">index</span> <span class="p">=</span> <span class="p">(</span><span class="n">index</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> <span class="o">%</span> <span class="n">capacity</span>
|
||||
<a id="__codelineno-17-52" name="__codelineno-17-52" href="#__codelineno-17-52"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-53" name="__codelineno-17-53" href="#__codelineno-17-53"></a> <span class="c1">// 若 key 不存在，则返回添加点的索引</span>
|
||||
<a id="__codelineno-17-54" name="__codelineno-17-54" href="#__codelineno-17-54"></a> <span class="k">return</span> <span class="n">firstTombstone</span> <span class="p">==</span> <span class="o">-</span><span class="mi">1</span> <span class="p">?</span> <span class="n">index</span> <span class="p">:</span> <span class="n">firstTombstone</span>
|
||||
<a id="__codelineno-17-55" name="__codelineno-17-55" href="#__codelineno-17-55"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-56" name="__codelineno-17-56" href="#__codelineno-17-56"></a>
|
||||
<a id="__codelineno-17-57" name="__codelineno-17-57" href="#__codelineno-17-57"></a> <span class="cm">/* 查询操作 */</span>
|
||||
<a id="__codelineno-17-58" name="__codelineno-17-58" href="#__codelineno-17-58"></a> <span class="kd">func</span> <span class="nf">get</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="nb">Int</span><span class="p">)</span> <span class="p">-></span> <span class="nb">String</span><span class="p">?</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-59" name="__codelineno-17-59" href="#__codelineno-17-59"></a> <span class="c1">// 搜索 key 对应的桶索引</span>
|
||||
<a id="__codelineno-17-60" name="__codelineno-17-60" href="#__codelineno-17-60"></a> <span class="kd">let</span> <span class="nv">index</span> <span class="p">=</span> <span class="n">findBucket</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">key</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-61" name="__codelineno-17-61" href="#__codelineno-17-61"></a> <span class="c1">// 若找到键值对，则返回对应 val</span>
|
||||
<a id="__codelineno-17-62" name="__codelineno-17-62" href="#__codelineno-17-62"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="o">!=</span> <span class="kc">nil</span><span class="p">,</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="o">!=</span> <span class="n">TOMBSTONE</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-63" name="__codelineno-17-63" href="#__codelineno-17-63"></a> <span class="k">return</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="o">!</span><span class="p">.</span><span class="n">val</span>
|
||||
<a id="__codelineno-17-64" name="__codelineno-17-64" href="#__codelineno-17-64"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-65" name="__codelineno-17-65" href="#__codelineno-17-65"></a> <span class="c1">// 若键值对不存在，则返回 null</span>
|
||||
<a id="__codelineno-17-66" name="__codelineno-17-66" href="#__codelineno-17-66"></a> <span class="k">return</span> <span class="kc">nil</span>
|
||||
<a id="__codelineno-17-67" name="__codelineno-17-67" href="#__codelineno-17-67"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-68" name="__codelineno-17-68" href="#__codelineno-17-68"></a>
|
||||
<a id="__codelineno-17-69" name="__codelineno-17-69" href="#__codelineno-17-69"></a> <span class="cm">/* 添加操作 */</span>
|
||||
<a id="__codelineno-17-70" name="__codelineno-17-70" href="#__codelineno-17-70"></a> <span class="kd">func</span> <span class="nf">put</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="nb">Int</span><span class="p">,</span> <span class="n">val</span><span class="p">:</span> <span class="nb">String</span><span class="p">)</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-71" name="__codelineno-17-71" href="#__codelineno-17-71"></a> <span class="c1">// 当负载因子超过阈值时，执行扩容</span>
|
||||
<a id="__codelineno-17-72" name="__codelineno-17-72" href="#__codelineno-17-72"></a> <span class="k">if</span> <span class="n">loadFactor</span><span class="p">()</span> <span class="o">></span> <span class="n">loadThres</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-73" name="__codelineno-17-73" href="#__codelineno-17-73"></a> <span class="bp">extend</span><span class="p">()</span>
|
||||
<a id="__codelineno-17-74" name="__codelineno-17-74" href="#__codelineno-17-74"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-75" name="__codelineno-17-75" href="#__codelineno-17-75"></a> <span class="c1">// 搜索 key 对应的桶索引</span>
|
||||
<a id="__codelineno-17-76" name="__codelineno-17-76" href="#__codelineno-17-76"></a> <span class="kd">let</span> <span class="nv">index</span> <span class="p">=</span> <span class="n">findBucket</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">key</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-77" name="__codelineno-17-77" href="#__codelineno-17-77"></a> <span class="c1">// 若找到键值对，则覆盖 val 并返回</span>
|
||||
<a id="__codelineno-17-78" name="__codelineno-17-78" href="#__codelineno-17-78"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="o">!=</span> <span class="kc">nil</span><span class="p">,</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="o">!=</span> <span class="n">TOMBSTONE</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-79" name="__codelineno-17-79" href="#__codelineno-17-79"></a> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span><span class="o">!</span><span class="p">.</span><span class="n">val</span> <span class="p">=</span> <span class="n">val</span>
|
||||
<a id="__codelineno-17-80" name="__codelineno-17-80" href="#__codelineno-17-80"></a> <span class="k">return</span>
|
||||
<a id="__codelineno-17-81" name="__codelineno-17-81" href="#__codelineno-17-81"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-82" name="__codelineno-17-82" href="#__codelineno-17-82"></a> <span class="c1">// 若键值对不存在，则添加该键值对</span>
|
||||
<a id="__codelineno-17-83" name="__codelineno-17-83" href="#__codelineno-17-83"></a> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="p">=</span> <span class="n">Pair</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">key</span><span class="p">,</span> <span class="n">val</span><span class="p">:</span> <span class="n">val</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-84" name="__codelineno-17-84" href="#__codelineno-17-84"></a> <span class="n">size</span> <span class="o">+=</span> <span class="mi">1</span>
|
||||
<a id="__codelineno-17-85" name="__codelineno-17-85" href="#__codelineno-17-85"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-86" name="__codelineno-17-86" href="#__codelineno-17-86"></a>
|
||||
<a id="__codelineno-17-87" name="__codelineno-17-87" href="#__codelineno-17-87"></a> <span class="cm">/* 删除操作 */</span>
|
||||
<a id="__codelineno-17-88" name="__codelineno-17-88" href="#__codelineno-17-88"></a> <span class="kd">func</span> <span class="nf">remove</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="nb">Int</span><span class="p">)</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-89" name="__codelineno-17-89" href="#__codelineno-17-89"></a> <span class="c1">// 搜索 key 对应的桶索引</span>
|
||||
<a id="__codelineno-17-90" name="__codelineno-17-90" href="#__codelineno-17-90"></a> <span class="kd">let</span> <span class="nv">index</span> <span class="p">=</span> <span class="n">findBucket</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">key</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-91" name="__codelineno-17-91" href="#__codelineno-17-91"></a> <span class="c1">// 若找到键值对，则用删除标记覆盖它</span>
|
||||
<a id="__codelineno-17-92" name="__codelineno-17-92" href="#__codelineno-17-92"></a> <span class="k">if</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="o">!=</span> <span class="kc">nil</span><span class="p">,</span> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="o">!=</span> <span class="n">TOMBSTONE</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-93" name="__codelineno-17-93" href="#__codelineno-17-93"></a> <span class="n">buckets</span><span class="p">[</span><span class="n">index</span><span class="p">]</span> <span class="p">=</span> <span class="n">TOMBSTONE</span>
|
||||
<a id="__codelineno-17-94" name="__codelineno-17-94" href="#__codelineno-17-94"></a> <span class="n">size</span> <span class="o">-=</span> <span class="mi">1</span>
|
||||
<a id="__codelineno-17-95" name="__codelineno-17-95" href="#__codelineno-17-95"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-96" name="__codelineno-17-96" href="#__codelineno-17-96"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-97" name="__codelineno-17-97" href="#__codelineno-17-97"></a>
|
||||
<a id="__codelineno-17-98" name="__codelineno-17-98" href="#__codelineno-17-98"></a> <span class="cm">/* 扩容哈希表 */</span>
|
||||
<a id="__codelineno-17-99" name="__codelineno-17-99" href="#__codelineno-17-99"></a> <span class="kd">func</span> <span class="nf">extend</span><span class="p">()</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-100" name="__codelineno-17-100" href="#__codelineno-17-100"></a> <span class="c1">// 暂存原哈希表</span>
|
||||
<a id="__codelineno-17-101" name="__codelineno-17-101" href="#__codelineno-17-101"></a> <span class="kd">let</span> <span class="nv">bucketsTmp</span> <span class="p">=</span> <span class="n">buckets</span>
|
||||
<a id="__codelineno-17-102" name="__codelineno-17-102" href="#__codelineno-17-102"></a> <span class="c1">// 初始化扩容后的新哈希表</span>
|
||||
<a id="__codelineno-17-103" name="__codelineno-17-103" href="#__codelineno-17-103"></a> <span class="n">capacity</span> <span class="o">*=</span> <span class="n">extendRatio</span>
|
||||
<a id="__codelineno-17-104" name="__codelineno-17-104" href="#__codelineno-17-104"></a> <span class="n">buckets</span> <span class="p">=</span> <span class="nb">Array</span><span class="p">(</span><span class="n">repeating</span><span class="p">:</span> <span class="kc">nil</span><span class="p">,</span> <span class="bp">count</span><span class="p">:</span> <span class="n">capacity</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-105" name="__codelineno-17-105" href="#__codelineno-17-105"></a> <span class="n">size</span> <span class="p">=</span> <span class="mi">0</span>
|
||||
<a id="__codelineno-17-106" name="__codelineno-17-106" href="#__codelineno-17-106"></a> <span class="c1">// 将键值对从原哈希表搬运至新哈希表</span>
|
||||
<a id="__codelineno-17-107" name="__codelineno-17-107" href="#__codelineno-17-107"></a> <span class="k">for</span> <span class="n">pair</span> <span class="k">in</span> <span class="n">bucketsTmp</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-108" name="__codelineno-17-108" href="#__codelineno-17-108"></a> <span class="k">if</span> <span class="kd">let</span> <span class="nv">pair</span><span class="p">,</span> <span class="n">pair</span> <span class="o">!=</span> <span class="n">TOMBSTONE</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-109" name="__codelineno-17-109" href="#__codelineno-17-109"></a> <span class="n">put</span><span class="p">(</span><span class="n">key</span><span class="p">:</span> <span class="n">pair</span><span class="p">.</span><span class="n">key</span><span class="p">,</span> <span class="n">val</span><span class="p">:</span> <span class="n">pair</span><span class="p">.</span><span class="n">val</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-110" name="__codelineno-17-110" href="#__codelineno-17-110"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-111" name="__codelineno-17-111" href="#__codelineno-17-111"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-112" name="__codelineno-17-112" href="#__codelineno-17-112"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-113" name="__codelineno-17-113" href="#__codelineno-17-113"></a>
|
||||
<a id="__codelineno-17-114" name="__codelineno-17-114" href="#__codelineno-17-114"></a> <span class="cm">/* 打印哈希表 */</span>
|
||||
<a id="__codelineno-17-115" name="__codelineno-17-115" href="#__codelineno-17-115"></a> <span class="kd">func</span> <span class="nf">print</span><span class="p">()</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-116" name="__codelineno-17-116" href="#__codelineno-17-116"></a> <span class="k">for</span> <span class="n">pair</span> <span class="k">in</span> <span class="n">buckets</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-117" name="__codelineno-17-117" href="#__codelineno-17-117"></a> <span class="k">if</span> <span class="n">pair</span> <span class="p">==</span> <span class="kc">nil</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-118" name="__codelineno-17-118" href="#__codelineno-17-118"></a> <span class="n">Swift</span><span class="p">.</span><span class="bp">print</span><span class="p">(</span><span class="s">"null"</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-119" name="__codelineno-17-119" href="#__codelineno-17-119"></a> <span class="p">}</span> <span class="k">else</span> <span class="k">if</span> <span class="n">pair</span> <span class="p">==</span> <span class="n">TOMBSTONE</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-120" name="__codelineno-17-120" href="#__codelineno-17-120"></a> <span class="n">Swift</span><span class="p">.</span><span class="bp">print</span><span class="p">(</span><span class="s">"TOMBSTONE"</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-121" name="__codelineno-17-121" href="#__codelineno-17-121"></a> <span class="p">}</span> <span class="k">else</span> <span class="p">{</span>
|
||||
<a id="__codelineno-17-122" name="__codelineno-17-122" href="#__codelineno-17-122"></a> <span class="n">Swift</span><span class="p">.</span><span class="bp">print</span><span class="p">(</span><span class="s">"</span><span class="si">\(</span><span class="n">pair</span><span class="p">!.</span><span class="n">key</span><span class="si">)</span><span class="s"> -> </span><span class="si">\(</span><span class="n">pair</span><span class="p">!.</span><span class="n">val</span><span class="si">)</span><span class="s">"</span><span class="p">)</span>
|
||||
<a id="__codelineno-17-123" name="__codelineno-17-123" href="#__codelineno-17-123"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-124" name="__codelineno-17-124" href="#__codelineno-17-124"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-125" name="__codelineno-17-125" href="#__codelineno-17-125"></a> <span class="p">}</span>
|
||||
<a id="__codelineno-17-126" name="__codelineno-17-126" href="#__codelineno-17-126"></a><span class="p">}</span>
|
||||
</code></pre></div>
|
||||
</div>
|
||||
<div class="tabbed-block">
|
||||
|
||||
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