[백준/JAVA] 4344번 : 평균은 넘겠지

https://www.acmicpc.net/problem/4344

4344번: 평균은 넘겠지

 

 

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);
		int num = sc.nextInt();
		int[] studentNum = new int[num];
		double[] avg = new double[num];
		
		for(int i = 0; i < studentNum.length; i++) {

			studentNum[i] = sc.nextInt();
			int[] studentScore = new int[studentNum[i]];
			
			for(int j = 0; j < studentScore.length; j++) {
				studentScore[j] = sc.nextInt();
				avg[i] += studentScore[j];
			}
			avg[i] = avg[i] / studentNum[i];
			int count = 0;
			
			for(int k = 0; k < studentScore.length; k++) {
				if(avg[i] < studentScore[k]) {
					count++;
				}
			}
			avg[i] = 100.0 / studentNum[i] * count;
		}
		
		for(int i = 0; i < avg.length; i++) {
			System.out.printf("%.3f%%%n", avg[i]);
		}
	}
}