本文实例讲述了c#生成随机数功能。分享给大家供大家参考，具体如下：
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using system;using system.collections.generic;using system.linq;using system.text;namespace csharp{ class program { static void main(string[] args) { console.writeline("生成随机数\n"); int randcount = 9;//随机数发的个数 int randmin = 1;//随机数最小值 int randmax = 21;//随机数最大值 int randindex, flag, temp; randindex = temp = flag = 0; random rand = new random(); int[] randarr = new int[randcount]; randarr[0] = rand.next(randmin, randmax); while (true) { flag = 0; temp = rand.next(randmin, randmax); for (int i = 0; i <= randindex; i++) { if (temp == randarr[i]) { flag = 1; break; } } if (flag == 1)//如果 flag == 1 则有重复的数字生成。 { continue; } else if (flag == 0) { randindex++; randarr[randindex] = temp; } if (randindex >= randcount - 1)//如果达到 randcount 退出循环 { break; } } for (int i = 0; i < randcount; i++) { console.writeline("arr[" + i + "]=" + randarr[i]); } console.writeline("\n任意键退出。"); console.readline(); } }} |
生成无重复的随机数
运行结果如下：
希望本文所述对大家c#程序设计有所帮助。
