[백준] 1546_평균_Java

백준 1546

1546번: 평균

⚠️주의사항

• 이전의 최대값 구했던 Arrays.sort 사용하기
• int형이 아닌 double형

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문제풀이

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

public class Arrange_1546 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        StringBuilder sb = new StringBuilder();

        double arr[] = new double[Integer.parseInt(br.readLine())];
        StringTokenizer st = new StringTokenizer(br.readLine()," ");

        for (int i = 0; i < arr.length; i++) {
            arr[i] = Double.parseDouble(st.nextToken());
        }

        Arrays.sort(arr);
        double sum = 0;

        for (int i = 0; i < arr.length; i++) {
            arr[i] = arr[i] / arr[arr.length - 1] * 100;
            sum = sum + arr[i];
        }

        System.out.println(sum / arr.length);
    }
}