package com.wang.code.one;

import java.util.*;

import java.util.Stack;

import java.util.concurrent.LinkedBlockingQueue;

/**

* @author WANGJJ

* @date 2020/04/15cd

*/

public class test {

public static void main(String[] args) {

LinkListQueue<Integer> linkListQueue = new LinkListQueue<>();

linkListQueue.enqueue(4);

linkListQueue.enqueue(3);

linkListQueue.enqueue(5);

linkListQueue.enqueue(2);

System.out.println(linkListQueue.max(linkListQueue.getFirst()));

String a = "wangjunjie";

String[] strings = a.split("");

for (String s: strings) {

System.out.println(s);

}

}

public boolean isValid(String s) {

String[] strings = s.split("");

Stack<String> stack = new Stack<String>();

Map<String, String> hashMap = new HashMap();

hashMap.put(")", "(");

hashMap.put("]", "[");

hashMap.put("}", "{");

for(String symbol:strings) {

if ("(".equals(symbol) || "[".equals(symbol) || "{".equals(symbol)){

stack.push(symbol);

} else if (

")".equals(symbol) || "]".equals(symbol) || "}".equals(symbol)

) {

if(!stack.pop().equals(hashMap.get(symbol))){

stack.push(symbol);

}

}

}

return stack.isEmpty();

}

}