java实现括号匹配算法

package Bracket;

import java.util.ArrayList;

public class Stack {
	ArrayList<Character> list=new ArrayList<>();
	public void push(Character s) { //将左括号压入栈中
		list.add(s);
	}
	public void pop() {  //将匹配到的左括号弹栈
		list.remove(list.size()-1);
	}
	public boolean isEmpty() {  //判断栈是否为空
		return list.isEmpty();
	}
}

package Bracket;

import java.util.Scanner;

public class Bracket {
	public static void main(String[] args) {
		boolean flag=true;
		Stack stack=new Stack();
		Scanner in=new Scanner(System.in);
		System.out.println("请输入只包含\"(\",\")\"的字符串");
		String string=in.nextLine();
		System.out.println("输入的字符串为:"+string);
		char[] s=string.toCharArray();
		for(int i=0;i<s.length;i++) {
			if(s[i]=='(') {
				stack.push(s[i]);
			}
			else {
				if(stack.isEmpty()) {
					System.out.println("字符匹配失败！括号不合理！");
					flag=false;
					break;
				}
				else
					stack.pop();
			}
		}
		if(flag==true) {
			System.out.println("括号匹配成功！");
		}
	}
}

运行结果如下所示：

来源：CSDN

作者：Legolas~

链接：https://blog.csdn.net/qq_38883271/article/details/104093349