HDU1064 第一道JAVA

简单的不能再简单的题目， 不过倒是可以来练练新学的JAVA..

import java.util.Scanner;

public class Hello{

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        double[] a;
        double s = 0;
        a = new double[13];
        Scanner in = new Scanner(System.in);
        for(int i = 0; i < 12; i++){
            a[i] = in.nextDouble();
            s += a[i];
        }
        s = (double)s/12;
        System.out.printf("$%.2f", s);
        System.out.println();
    }
}