[4344] 1차원 배열 - 평균은 넘겠지

문제

 

코드

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

public class Main{
    public static void main(String[] args) throws IOException{
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        
        double sum = 0;
        double avg = 0;
        
        int outer = Integer.parseInt(br.readLine());
        for(int i=0; i<outer; i++){           
            StringTokenizer st = new StringTokenizer(br.readLine(), " ");
            int inner = Integer.parseInt(st.nextToken());
            int arr[] = new int[inner];
            
            for(int j=0; j<inner; j++){
                arr[j] = Integer.parseInt(st.nextToken());
                sum += (double)arr[j];
            }
            
            avg = (double)sum/inner;
            sum = 0.0;
            for(int j=0; j<inner; j++){
                if(arr[j] > avg)
                    sum += (double)100/inner;
            }
            sb.append(String.format("%.3f", sum)).append("%\n");
            sum = 0.0;
            avg = 0.0;
        }
        System.out.println(sb);
    }
}