c# 编程 简单实现11个数中选择不重复出现的5个数。

using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class Program { Random random = new Random(); public int[] ballNumber = new int[5]; public bool sign = false; static void Main(string[] args) { new Program().shuangSeQiu(); Console.ReadKey(); } #region shuang se qiu public void shuangSeQiu() { for (int i = 0; i < 5; i++) { sign = false; Console.WriteLine("the current count number is " + i); int randomNumber = random.Next(1, 12); Console.WriteLine("output: " + randomNumber); if (i == 0) { ballNumber[0] = randomNumber; } else { for (int j = 0; j < i; j++) { if (randomNumber == ballNumber[j]) { sign = true; i--; break; } } if (!sign) { ballNumber[i] = randomNumber; } } } for (int i = 0; i < 5; i++) { Console.WriteLine(ballNumber[i]); } } #endregion } }