Rolls.java （page44）

public class Rolls{

    public static void main(String[] args){

        int T = Integer.parseInt(args[0]);//转String为int
        int SIDES = 6;
        Counter[] rolls = new Counter[SIDES+1];//声明数组
        for(int i=1;i<=SIDES;i++)
            rolls[i] = new Counter(i + "‘s");
        for(int t=1;t<=T;t++){
            int result = StdRandom.uniform(1,SIDES+1); //去随机数， 1-7
            rolls[result].increment();//给1-7号元素自增1
        }
        for(int i=1;i<=SIDES;i++)
            StdOut.println(rolls[i]);
    }
}