mirror of
https://github.com/krahets/hello-algo.git
synced 2024-12-26 16:16:30 +08:00
39 lines
958 B
Swift
39 lines
958 B
Swift
/**
|
||
* File: stack.swift
|
||
* Created Time: 2023-01-09
|
||
* Author: nuomi1 (nuomi1@qq.com)
|
||
*/
|
||
|
||
@main
|
||
enum Stack {
|
||
/* Driver Code */
|
||
static func main() {
|
||
/* 初始化栈 */
|
||
// Swift 没有内置的栈类，可以把 Array 当作栈来使用
|
||
var stack: [Int] = []
|
||
|
||
/* 元素入栈 */
|
||
stack.append(1)
|
||
stack.append(3)
|
||
stack.append(2)
|
||
stack.append(5)
|
||
stack.append(4)
|
||
print("栈 stack = \(stack)")
|
||
|
||
/* 访问栈顶元素 */
|
||
let peek = stack.last!
|
||
print("栈顶元素 peek = \(peek)")
|
||
|
||
/* 元素出栈 */
|
||
let pop = stack.removeLast()
|
||
print("出栈元素 pop = \(pop)，出栈后 stack = \(stack)")
|
||
|
||
/* 获取栈的长度 */
|
||
let size = stack.count
|
||
print("栈的长度 size = \(size)")
|
||
|
||
/* 判断是否为空 */
|
||
let isEmpty = stack.isEmpty
|
||
print("栈是否为空 = \(isEmpty)")
|
||
}
|
||
}
|