[SWEA][JAVA]D3 : 승현이의 수학공부

https://swexpertacademy.com/main/code/problem/problemDetail.do?problemLevel=3&contestProbId=AWksRkI6AR0DFAVE&categoryId=AWksRkI6AR0DFAVE&categoryType=CODE&problemTitle=&orderBy=INQUERY_COUNT&selectCodeLang=ALL&select-1=3&pageSize=10&pageIndex=7 

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입력받은 숫자 그대로 자릿수를 더해서 -1한 숫자로 나눠주면 된다.

 

( int 자릿수 덧셈은 범위가 너무 커서 안됨 )

 

import java.util.*;

public class Solution {
    public static void main(String[] args) {
        Scanner kb = new Scanner(System.in);
        int T = kb.nextInt();
        for (int t = 1; t <= T; t++) {
            int n =kb.nextInt();
            String s=kb.next();
            long sum=0;
            for(int i=0; i<s.length(); i++){
                sum+=s.charAt(i)-'0';
            }
            long answer=sum%(n-1);
            System.out.println("#"+t+" "+answer);
        }
    }
}