Java - 백준 코딩테스트 2908번 [문자열 - 상수]

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;
 
public class Constant {
 
    public static void main(String[] args) throws IOException {
        // 20210629 - 백준 2908번
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        
        StringTokenizer st = new StringTokenizer(br.readLine(), " ");
        String num1 = st.nextToken();
        String num2 = st.nextToken();
 
        String newNum1 = "";
        String newNum2 = "";
        
        for (int i = 2; i >= 0; i--) {
            newNum1 += num1.charAt(i);
            newNum2 += num2.charAt(i);
        }
        
        int intNum1 = Integer.parseInt(newNum1);
        int intNum2 = Integer.parseInt(newNum2);
        
        if (intNum1 > intNum2) {
            bw.write(String.valueOf(intNum1));
        } else {
            bw.write(String.valueOf(intNum2));
        }
        
        bw.flush();
        bw.close();
        br.close();
        
        
        //간단한 풀이
//        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
//        
//        StringTokenizer st = new StringTokenizer(br.readLine()," ");
//        
//        int A = Integer.parseInt(new StringBuilder(st.nextToken()).reverse().toString());
//        int B = Integer.parseInt(new StringBuilder(st.nextToken()).reverse().toString()); 
//        System.out.println(A>B ? A:B);
//        
        
    }
}