Poj Solution 2350

http://poj.org/problem?id=2350

import java.util.Scanner;   
  
/**  
 * poj2350 easy  
 * @author NC  
 */  
public class Main {   
  
    public static void main(String[] args) {   
        Scanner scan = new Scanner(System.in);   
        if (scan.hasNext()) {   
            int n = scan.nextInt();   
            for (int i = 0; i < n; i++) {   
                int nn = scan.nextInt();   
                float sum = 0f;   
                int[] aa = new int[nn];   
                for (int j = 0; j < nn; j++) {   
                    aa[j]= scan.nextInt();   
                    sum = sum + aa[j];   
                }   
                float average = sum/nn;   
                float count = 0f;   
                for(int j = 0; j < nn; j++){   
                    if(aa[j]>average){   
                        count++;   
                    }   
                }   
                System.out.printf("%.3f",count/nn*100);   
                System.out.println("%");   
  
            }   
        }   
    }   
}  

											
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