[브론즈 II] 1212번 :: 8진수 2진수 / Java

 

 

 

 

문제

https://www.acmicpc.net/problem/1212

1212번: 8진수 2진수

 

 

 

 

 

코드

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

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

        for(int i=0; i<str.length(); i++) {
            String a = Integer.toBinaryString(str.charAt(i)-'0');
            if(a.length()==2 && i!=0) {
                a = "0"+a;
            } else if(a.length()==1 && i!=0) {
                a = "00"+a;
            }
            sb.append(a);
        }
        
        System.out.println(sb);

    }
}