mirror of
https://github.com/krahets/hello-algo.git
synced 2024-12-27 12:46:27 +08:00
36 lines
834 B
Dart
36 lines
834 B
Dart
|
/**
|
||
|
|
* File: stack.dart
|
||
|
|
* Created Time: 2023-03-27
|
||
|
|
* Author: liuyuxin (gvenusleo@gmail.com)
|
||
|
|
*/
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
/* 初始化堆疊 */
|
||
|
|
// Dart 沒有內建的堆疊類別，可以把 List 當作堆疊來使用
|
||
|
|
final List<int> stack = [];
|
||
|
|
|
||
|
|
/* 元素入堆疊 */
|
||
|
|
stack.add(1);
|
||
|
|
stack.add(3);
|
||
|
|
stack.add(2);
|
||
|
|
stack.add(5);
|
||
|
|
stack.add(4);
|
||
|
|
print("堆疊 stack = $stack");
|
||
|
|
|
||
|
|
/* 訪問堆疊頂元素 */
|
||
|
|
final int peek = stack.last;
|
||
|
|
print("堆疊頂元素 peek = $peek");
|
||
|
|
|
||
|
|
/* 元素出堆疊 */
|
||
|
|
final int pop = stack.removeLast();
|
||
|
|
print("出堆疊元素 pop = $pop ，出堆疊後 stack = $stack");
|
||
|
|
|
||
|
|
/* 獲取堆疊的長度 */
|
||
|
|
final int size = stack.length;
|
||
|
|
print("堆疊的長度 size = $size");
|
||
|
|
|
||
|
|
/* 判斷是否為空 */
|
||
|
|
final bool isEmpty = stack.isEmpty;
|
||
|
|
print("堆疊是否為空 = $isEmpty");
|
||
|
|
}
|