Randomly picking up a value in an array

Question

I wrote a small programme that randomly picks up and displays a number from a small array. I'm trying to figure out a way to pick up a random number in a bigger array. Has anyone got any convenient solution to do that ?
https://code.sololearn.com/cakXzXVyZIkq/?ref=app

Answer 1

This works for arrays of any size.

int [] tableau = new int [5] {8,1,5,6,2};
Random chiffre = new Random ();
int j = chiffre.Next(5);
Console.WriteLine(j);
Console.WriteLine(tableau[j]);

Answer 2

Thanks Sir Krishna! Anyway you may:-

☑ Omit the 5 in the square bracket since the array size was fixed during initialization.

☑ Replace the 5 in Next method with tableau.Length

and it will work for any array size! 😉

Answer 3

In two lines...

int [] array = {1, 2, 3, 4, 5};
Console.WriteLine(array[new Random().Next(-1,array.Length)]);