[백준] 2504. 괄호의 값

2504. 괄호의 값

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Code

package baekjoon;

import java.io.*;
import java.util.*;

public class 괄호의값_2504 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String str = br.readLine();

        Stack<Character> stack = new Stack<>();
        int result = 0;
        int value = 1;

        for(int i=0; i<str.length(); i++){
            if(str.charAt(i) == '('){
                stack.push(str.charAt(i));
                value *= 2;
            }else if(str.charAt(i) == '['){
                stack.push(str.charAt(i));
                value *= 3;
            }else if(str.charAt(i) == ')'){
                if(stack.isEmpty() || stack.peek() != '('){
                    result = 0;
                    break;
                }else if(str.charAt(i-1) == '(')
                    result += value;
                stack.pop();
                value /= 2;
            }else if(str.charAt(i) == ']'){
                if(stack.isEmpty() || stack.peek() != '['){
                    result = 0;
                    break;
                }else if(str.charAt(i-1) == '[')
                    result += value;
                stack.pop();
                value /= 3;
            }
        }
        if(!stack.isEmpty()) System.out.println(0);
        else System.out.println(result);

    }
}