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StackTest.java
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72 lines (65 loc) · 1.75 KB
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package _Test;
import java.util.LinkedList;
import java.util.Stack;
public class StackTest {
public static void stack0() {
Stack<Integer> stack = new Stack<>();
stack.add(1);
stack.add(2);
stack.add(3);
while(!stack.isEmpty()) {
System.out.print(stack.pop() + " ");
}
System.out.println();
}
public static void stack01() {
Stack<Integer> stack = new Stack<>();
stack.push(1);
stack.push(2);
stack.push(3);
while(!stack.isEmpty()) {
System.out.print(stack.pop() + " ");
}
System.out.println();
}
// 尾部追加尾部弹出
public static void stack1() {
LinkedList<Integer> stack = new LinkedList<>();
stack.addLast(1);
stack.addLast(2);
stack.addLast(3);
while(!stack.isEmpty()) {
System.out.print(stack.pollLast() + " ");
}
System.out.println();
}
// 头部追加, 头部弹出
public static void stack2() {
LinkedList<Integer> stack = new LinkedList<>();
stack.push(1);
stack.push(2);
stack.push(3);
while(!stack.isEmpty()) {
System.out.print(stack.pop() + " ");
}
System.out.println();
}
// 头部追加, 头部弹出
public static void stack22() {
LinkedList<Integer> stack = new LinkedList<>();
stack.addFirst(1);
stack.addFirst(2);
stack.addFirst(3);
while(!stack.isEmpty()) {
System.out.print(stack.pollFirst() + " ");
}
System.out.println();
}
public static void main(String[] args) {
stack0();
stack01();
stack1();
stack2();
stack22();
}
}