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Update the book based on the revised second edition (#1014)
* Revised the book * Update the book with the second revised edition * Revise base on the manuscript of the first edition
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@ -93,7 +93,7 @@ if __name__ == "__main__":
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hmap.print()
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# 查询操作
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# 向哈希表输入键 key ,得到值 value
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# 向哈希表中输入键 key ,得到值 value
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name = hmap.get(15937)
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print("\n输入学号 15937 ,查询到姓名 " + name)
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@ -26,7 +26,7 @@ if __name__ == "__main__":
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print_dict(hmap)
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# 查询操作
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# 向哈希表输入键 key ,得到值 value
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# 向哈希表中输入键 key ,得到值 value
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name: str = hmap[15937]
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print("\n输入学号 15937 ,查询到姓名 " + name)
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@ -34,11 +34,11 @@ class HashMapChaining:
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"""查询操作"""
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index = self.hash_func(key)
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bucket = self.buckets[index]
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# 遍历桶,若找到 key 则返回对应 val
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# 遍历桶,若找到 key ,则返回对应 val
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for pair in bucket:
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if pair.key == key:
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return pair.val
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# 若未找到 key 则返回 None
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# 若未找到 key ,则返回 None
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return None
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def put(self, key: int, val: str):
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@ -107,7 +107,7 @@ if __name__ == "__main__":
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hashmap.print()
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# 查询操作
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# 向哈希表输入键 key ,得到值 value
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# 向哈希表中输入键 key ,得到值 value
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name = hashmap.get(13276)
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print("\n输入学号 13276 ,查询到姓名 " + name)
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@ -37,9 +37,9 @@ class HashMapOpenAddressing:
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first_tombstone = -1
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# 线性探测,当遇到空桶时跳出
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while self.buckets[index] is not None:
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# 若遇到 key ,返回对应桶索引
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# 若遇到 key ,返回对应的桶索引
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if self.buckets[index].key == key:
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# 若之前遇到了删除标记,则将键值对移动至该索引
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# 若之前遇到了删除标记,则将键值对移动至该索引处
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if first_tombstone != -1:
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self.buckets[first_tombstone] = self.buckets[index]
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self.buckets[index] = self.TOMBSTONE
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@ -48,7 +48,7 @@ class HashMapOpenAddressing:
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# 记录遇到的首个删除标记
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if first_tombstone == -1 and self.buckets[index] is self.TOMBSTONE:
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first_tombstone = index
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# 计算桶索引,越过尾部返回头部
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# 计算桶索引,越过尾部则返回头部
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index = (index + 1) % self.capacity
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# 若 key 不存在,则返回添加点的索引
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return index if first_tombstone == -1 else first_tombstone
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@ -127,7 +127,7 @@ if __name__ == "__main__":
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hashmap.print()
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# 查询操作
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# 向哈希表输入键 key ,得到值 val
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# 向哈希表中输入键 key ,得到值 val
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name = hashmap.get(13276)
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print("\n输入学号 13276 ,查询到姓名 " + name)
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