实验2-2 C#实现卡布列克运算

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace kblk
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("请输入一个四位数的整数：");
            string s = Console.ReadLine();
            int num = Convert.ToInt32(s);
            int[] each = new int[4];
            int max, min, i, j, temp;
            while (num != 6174 && num != 0)
            {
                i = 0;
                while (num != 0) {
                    each[i++] = num % 10;
                    num = num/10;
                }
                for (i = 0; i < 3; i++)
                {
                    for (j = 0; j < 3 - i; j++)
                    {
                        if (each[j] > each[j + 1])
                        {
                            temp = each[j];
                            each[j] = each[j + 1];
                            each[j + 1] = temp;

                        }
                    }
                }
                min = each[0]*1000+each[1]*100+each[2]*10+each[3];
                max = each[3]*1000+each[2]*100+each[1]*10+each[0];
                num = max-min;
                Console.WriteLine("{0}-{1}={2}",max,min,num);
            }
            Console.Read();
        }
    }
}