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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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@ -47,7 +47,7 @@ class ArrayDeque {
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return
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}
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// 队首指针向左移动一位
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// 通过取余操作,实现 front 越过数组头部后回到尾部
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// 通过取余操作实现 front 越过数组头部后回到尾部
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front = index(i: front - 1)
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// 将 num 添加至队首
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nums[front] = num
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@ -60,7 +60,7 @@ class ArrayDeque {
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print("双向队列已满")
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return
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}
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// 计算尾指针,指向队尾索引 + 1
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// 计算队尾指针,指向队尾索引 + 1
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let rear = index(i: front + size())
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// 将 num 添加至队尾
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nums[rear] = num
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@ -36,8 +36,8 @@ class ArrayQueue {
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print("队列已满")
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return
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}
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// 计算尾指针,指向队尾索引 + 1
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// 通过取余操作,实现 rear 越过数组尾部后回到头部
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// 计算队尾指针,指向队尾索引 + 1
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// 通过取余操作实现 rear 越过数组尾部后回到头部
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let rear = (front + queSize) % capacity()
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// 将 num 添加至队尾
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nums[rear] = num
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@ -48,7 +48,7 @@ class ArrayQueue {
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@discardableResult
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func pop() -> Int {
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let num = peek()
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// 队首指针向后移动一位,若越过尾部则返回到数组头部
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// 队首指针向后移动一位,若越过尾部,则返回到数组头部
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front = (front + 1) % capacity()
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queSize -= 1
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return num
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@ -26,7 +26,7 @@ class LinkedListQueue {
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/* 入队 */
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func push(num: Int) {
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// 尾节点后添加 num
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// 在尾节点后添加 num
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let node = ListNode(x: num)
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// 如果队列为空,则令头、尾节点都指向该节点
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if front == nil {
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