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39 lines
798 B
39 lines
798 B
/**
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* File: stack.kt
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* Created Time: 2024-01-25
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* Author: curtishd (1023632660@qq.com)
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*/
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package chapter_stack_and_queue
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import java.util.*
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/* Driver Code */
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fun main() {
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/* 初始化栈 */
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val stack = Stack<Int>()
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/* 元素入栈 */
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stack.push(1)
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stack.push(3)
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stack.push(2)
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stack.push(5)
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stack.push(4)
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println("栈 stack = $stack")
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/* 访问栈顶元素 */
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val peek = stack.peek()
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println("栈顶元素 peek = $peek")
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/* 元素出栈 */
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val pop = stack.pop()
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println("出栈元素 pop = $pop，出栈后 stack = $stack")
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/* 获取栈的长度 */
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val size = stack.size
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println("栈的长度 size = $size")
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/* 判断是否为空 */
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val isEmpty = stack.isEmpty()
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println("栈是否为空 = $isEmpty")
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} |