Get random number from array with weightage

Question

Hello i need to select 5 random numbers from an array were each value is weighed and how can i do that . thanks

Vulpes · Answer

If the weights are integers and repetitions are allowed then here's a simple approach you could use: using System; using System.Collections.Generic; using System.Linq; class Program { static void Main() { /* sample array and weights */ int[] array = {1 2 3 4 5 6 7 8 9 10}; int[] weight = {10 9 8 7 6 5 4 3 2 1}; var list = new List (); for(int i = 0; i { for(int j = 0; j { list.Add(i); } } int count = list.Count; Random r = new Random(); for(int i = 0; i { int n = array[list[r.Next(count)]]; Console.WriteLine(Random number {0} = {1} i + 1 n); } Console.ReadKey(); } }