B站 后端开发笔试题

bilibili 后端开发编程题
扭蛋问题：

import java.util.Scanner;

/**
 * @author: kent
 * @date: 2018/9/21 15:53
 */
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int num = in.nextInt();
        StringBuilder string = new StringBuilder();
        while( num != 0){
            if(num%2 == 0){
                num = (num -2)/2;
                string.append("3");
            }else{
                num = (num - 1)/2;
                string.append("2");
            }
        }
        System.out.println(string.reverse());

    }
}

开启瞎扯模式！！！