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36 lines
834 B
36 lines
834 B
/**
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* File: stack.dart
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* Created Time: 2023-03-27
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* Author: liuyuxin (gvenusleo@gmail.com)
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*/
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void main() {
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/* 初始化堆疊 */
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// Dart 沒有內建的堆疊類別，可以把 List 當作堆疊來使用
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final List<int> stack = [];
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/* 元素入堆疊 */
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stack.add(1);
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stack.add(3);
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stack.add(2);
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stack.add(5);
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stack.add(4);
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print("堆疊 stack = $stack");
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/* 訪問堆疊頂元素 */
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final int peek = stack.last;
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print("堆疊頂元素 peek = $peek");
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/* 元素出堆疊 */
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final int pop = stack.removeLast();
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print("出堆疊元素 pop = $pop ，出堆疊後 stack = $stack");
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/* 獲取堆疊的長度 */
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final int size = stack.length;
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print("堆疊的長度 size = $size");
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/* 判斷是否為空 */
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final bool isEmpty = stack.isEmpty;
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print("堆疊是否為空 = $isEmpty");
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}
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