-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathQ4344.java
More file actions
38 lines (35 loc) · 1.49 KB
/
Q4344.java
File metadata and controls
38 lines (35 loc) · 1.49 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
/**
* Date: 2018. 10. 19.
* Author: inhyuck | https://github.com/inhyuck
* Solution URL: https://github.com/inhyuck/problem-solving
* Title: 평균은 넘겠지
* description: 대학생 새내기들의 90%는 자신이 반에서 평균은 넘는다고 생각한다. 당신은 그들에게 슬픈 진실을 알려줘야 한다.
* Problem URL: https://www.acmicpc.net/problem/4344
*/
package io.inhyuck.basic;
import java.io.*;
import java.util.Arrays;
import java.util.StringTokenizer;
public class Q4344 {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(System.out));
StringTokenizer tokenizer;
int n;
int[] numbers;
long countOfWinnerStudent;
int t = Integer.parseInt(reader.readLine());
while (t-- > 0) {
tokenizer = new StringTokenizer(reader.readLine());
n = Integer.parseInt(tokenizer.nextToken());
numbers = new int[n];
for (int i = 0; i < n; i++) {
numbers[i] = Integer.parseInt(tokenizer.nextToken());
}
double average = Arrays.stream(numbers).average().getAsDouble();
countOfWinnerStudent = Arrays.stream(numbers).filter(x -> x > average).count();
writer.write(String.format("%.3f%%\n", countOfWinnerStudent * 100.0 / n));
}
writer.flush();
}
}