package Week_01;

import java.util.Deque;

import java.util.LinkedList;

/**

* @author xingchen.lin

* @desc

* @time 2020/4/18 4:36 下午.

*/

public class ChangeDeque {

public static void main(String[] args) {

Deque<String> deque = new LinkedList<>();

deque.push("a");

deque.push("b");

deque.push("c");

System.out.println(deque);

String str = deque.peek();

System.out.println(str);

System.out.println(deque);

while (deque.size() > 0) {

System.out.println(deque.pop());

}

System.out.println(deque);

Deque<String> changedDeque = new LinkedList<>();

changedDeque.addFirst("a");

changedDeque.addFirst("b");

changedDeque.addFirst("c");

System.out.println(changedDeque);

str = changedDeque.peekFirst();

System.out.println(str);

System.out.println(changedDeque);

while (changedDeque.size() > 0) {

System.out.println(changedDeque.pollFirst());

}

System.out.println(changedDeque);

}

}