[BOJ] 1357 뒤집힌 덧셈 (JAVA)

https://www.acmicpc.net/problem/1357

1357번: 뒤집힌 덧셈

문자열 숫자 문자열 숫자 문자열 파싱하는게 귀찮죠?

 

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {
    
    static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    static StringTokenizer st;

    public static void main(String[] args) throws Exception {

        st = new StringTokenizer(br.readLine(), " ");
        String input1 = st.nextToken();
        String input2 = st.nextToken();
        String s1 = "";
        String s2 = "";
        for (int i = input1.length() - 1; i >= 0; i--) {
            s1 += input1.charAt(i);
        }
        for (int i = input2.length() - 1; i >= 0; i--) {
            s2 += input2.charAt(i);
        }
        int a1 = Integer.parseInt(s1) + Integer.parseInt(s2);
        String s3 = a1 + "";
        String s4 = "";
        for (int i = s3.length() - 1; i >= 0; i--) {
            s4 += s3.charAt(i);
        }
        System.out.print(Integer.parseInt(s4));
    }

}