Detailed code example of C # generating random number function

This article mainly introduces the C # generation of random number function, involving C # mathematical operations and string manipulation related skills, with a certain reference value, the need for friends can refer to the following

The example in this article describes the C # generation of random numbers functionality. Share to everyone for your reference, as follows:

Using system;using system.collections.generic;using system.linq;using system.text;namespace csharp{class Program {s      tatic void Main (string[] args) {Console.WriteLine ("Generate random number \ n");      int randcount = 9;//number of random digits int randmin = 1;//random number minimum int randmax = 21;//random number max 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)//IF flag = = 1 has duplicate number generation.        {continue;          } else if (flag = = 0) {randindex++;        Randarr[randindex] = temp;        } if (Randindex >= randCount-1)//If the Randcount exit loop is reached {break;}} for (int i = 0; i < Randcount; i++) {Console.WriteLine ("arr[" + i + "]=" + randarr[i]); } Console.WriteLine ("\ n any key exits.      ");    Console.ReadLine (); }  }}

Generate random numbers with no duplicates

The results of the operation are as follows: