HDOJ 1014 Uniform Generator

HDACM1014
此题做法：用布尔数组的下标值来表示0~mod-1，通过其布尔值来判断一个循环是否结束，如过布尔数组的每个布尔值都为true则Good Choice，否则Bad Choice

import java.util.Scanner;

public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNext()) {
            int step = sc.nextInt();
            int mod = sc.nextInt();
            boolean[] boo = new boolean[mod];
            boo[0]=true;
            int a = 0;
            int i = 1;
            for (; i < boo.length; i++) {
                int pos = (a+step)%mod;
                boo[pos] = !boo[pos];
                a=pos;
                if (boo[pos]==false) {
                    break;
                }
            }
            System.out.printf("%10d%10d",step,mod);
            if (i==boo.length) {
                System.out.println("    Good Choice");
                System.out.println();
                continue;
            }
            System.out.println("    Bad Choice");
            System.out.println();
        }
    }
}