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Update Dart code to output same as Java (#522)

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liuyuxin
2023-05-30 13:00:16 +08:00
committed by GitHub
parent 5bbcb12979
commit 8247a611d7
14 changed files with 47 additions and 42 deletions
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23
codes/dart/chapter_stack_and_queue/deque.dart
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@ -9,13 +9,9 @@ import 'dart:collection';
void main() {
/* 初始化双向队列 */
final Queue<int> deque = Queue();
/* 元素入队 */
deque.addFirst(3);
deque.addLast(2);
deque.addLast(5);
deque.addLast(4);
deque.addFirst(3);
deque.addFirst(1);
print("双向队列 deque = $deque");
/* 访问元素 */
@ -24,17 +20,24 @@ void main() {
final int peekLast = deque.last;
print("队尾元素 peekLast = $peekLast");
/* 元素入队 */
deque.addLast(4);
print("元素 4 队尾入队后 deque = $deque");
deque.addFirst(1);
print("元素 1 队首入队后 deque = $deque");
/* 元素出队 */
final int popFirst = deque.removeFirst();
print("队首出队元素 popFirst = $popFirst，队首出队后 deque = $deque");
final int popLast = deque.removeLast();
print("队尾出队元素 popLast = $popLast，队尾出队后 deque = $deque");
print("队尾出队元素 = $popLast，队尾出队后 deque = $deque");
final int popFirst = deque.removeFirst();
print("队首出队元素 = $popFirst，队首出队后 deque = $deque");
/* 获取双向队列的长度 */
final int size = deque.length;
print("双向队列的长度 size = $size");
print("双向队列长度 size = $size");
/* 判断双向队列是否为空 */
final bool isEmpty = deque.isEmpty;
print("双向队列是否为空 isEmpty = $isEmpty");
print("双向队列是否为空 = $isEmpty");
}