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41 lines
1.0 KiB
41 lines
1.0 KiB
/**
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* File: stack.java
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* Created Time: 2022-11-25
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* Author: krahets (krahets@163.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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public class stack {
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public static void main(String[] args) {
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/* Initialize stack */
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Stack<Integer> stack = new Stack<>();
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/* Element push */
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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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System.out.println("Stack stack = " + stack);
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/* Access stack top element */
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int peek = stack.peek();
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System.out.println("Top element peek = " + peek);
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/* Element pop */
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int pop = stack.pop();
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System.out.println("Popped element = " + pop + ", after popping" + stack);
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/* Get the length of the stack */
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int size = stack.size();
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System.out.println("Length of the stack size = " + size);
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/* Determine if it's empty */
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boolean isEmpty = stack.isEmpty();
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System.out.println("Is the stack empty = " + isEmpty);
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}
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}
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