[JAVA] 단계별로 풀어보기 4. while문

1. BOJ10952 A+B - 5

https://www.acmicpc.net/problem/10952

10952번: A+B - 5

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

public class Main{
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));        
        StringBuilder sb = new StringBuilder();
        byte a, b;
        
        while(true){
            String[] str = br.readLine().split(" ");            
            a = Byte.parseByte(str[0]);
            b = Byte.parseByte(str[1]);
        
            if(a==0 && b==0)
                break;
            
            sb.append((a+b));
            sb.append("\n");
            }
        System.out.println(sb);
	}
}

 

2. BOJ10951 A+B - 4

https://www.acmicpc.net/problem/10951

10951번: A+B - 4

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

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

		while ((testCase = br.readLine()) != null) {
			str = testCase.split(" ");
			sb.append((Byte.parseByte(str[0])+Byte.parseByte(str[1])));
			sb.append("\n");
		}
		System.out.println(sb);
	}
}

 

3. BOJ1110 더하기 사이클

https://www.acmicpc.net/problem/1110

1110번: 더하기 사이클

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

public class Main{
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));        
        int n = Integer.parseInt(br.readLine());
        int sum = n;
        int count = 0;
        
        do{
            sum = ((sum%10)*10)+(((sum/10)+(sum%10))%10);
            count++;
        } while (n != sum);
        System.out.println(count);
	}
}