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Update stack and queue.

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This commit is contained in:
Yudong Jin
2022-11-30 02:27:26 +08:00
parent 53cc651af2
commit 8669e06414
24 changed files with 705 additions and 186 deletions
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11
codes/java/chapter_stack_and_queue/deque.java
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@ -10,7 +10,7 @@ import java.util.*;
public class deque {
public static void main(String[] args) {
/* 初始化队列 */
/* 初始化双向队列 */
Deque<Integer> deque = new LinkedList<>();
/* 元素入队 */
@ -19,7 +19,7 @@ public class deque {
deque.offerLast(4);
deque.offerFirst(3);
deque.offerFirst(1);
System.out.println("队列 deque = " + deque);
System.out.println("双向队列 deque = " + deque);
/* 访问队首元素 */
int peekFirst = deque.peekFirst();
@ -33,11 +33,12 @@ public class deque {
int pollLast = deque.pollLast();
System.out.println("队尾出队元素 pollLast = " + pollLast + "，队尾出队后 deque = " + deque);
/* 获取队列的长度 */
/* 获取双向队列的长度 */
int size = deque.size();
System.out.println("队列长度 size = " + size);
System.out.println("双向队列长度 size = " + size);
/* 判断队列是否为空 */
/* 判断双向队列是否为空 */
boolean isEmpty = deque.isEmpty();
System.out.println("双向队列是否为空 = " + isEmpty);
}
}