package com.zmz.algorithm.stackQueue;

import com.sun.org.apache.xpath.internal.operations.Bool;

import java.util.Stack;

/**
 * @author 张明泽
 * Create by 2022/5/22 22:34
 * 有效的括号
 * 阿里面试题
 * LeetCode-10
 */
public class EffectiveBrackets {
    public static void main(String[] args) {
        String str = "[";
        Boolean flag = judgeBrackets(str);
        System.out.println(flag);
    }
    public static Boolean judgeBrackets(String str) {
        Stack<Character> stack = new Stack<>();
        for (char c : str.toCharArray()) {
            if (c == '(') {
                stack.push(')');
            } else if (c == '[') {
                stack.push(']');
            } else if (c == '{') {
                stack.push('}');
            } else if (stack.isEmpty() || stack.pop() != c) return false;
        }
        return stack.isEmpty();
    }

}