Question

I like to create an int[] with length X and value it with [0,1,2….X]

e.g.

public int[] CreateAA(int X){}

int[] AA = CreateAA(9) => [0,1,2,3,4,5,6,7,8,9]

is there any easy method? Or have to loop and init value

Answer 1

You can avail the functionality of IEnumerable.

int[] arr = Enumerable.Range(0, X+1).ToArray();

This will create a IEnumerable List for you and .ToArray() will satisfy your int array need.

So for X=9 in your case it would generate the array for [0,1,2,3,4,5,6,7,8,9] (as you need)