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題目概要：
找出分數在平均以上佔多少百分比。
解題方向：
先計算出平均分數後，計算有多少分數是在平均以上，再去計算百分比。
程式碼：
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| //Java | |
| import java.util.Scanner; | |
| class uva10370{ | |
| public static void main(String args[]){ | |
| Scanner sc=new Scanner(System.in); | |
| int cases=sc.nextInt(); | |
| for(int i=0;i<cases;i++){ | |
| int n=sc.nextInt(); | |
| int grade[]=new int[n]; | |
| for(int j=0;j<n;j++){ | |
| grade[j]=sc.nextInt(); | |
| } | |
| //計算平均分數 | |
| int total=0; | |
| for(int j=0;j<n;j++) total=total+grade[j]; | |
| int average=total/n; | |
| //計算百分比，並輸出 | |
| float count=0; | |
| for(int j=0;j<n;j++) if(grade[j]>average) count++; | |
| System.out.printf("%.3f%%",count/n*100); | |
| System.out.println(""); | |
| } | |
| } | |
| } |
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