[X, 0, 0, 0, 0] [0, X, 0, 0, 0] [0, 0, X, 0, 0] [0, 0, 0, X, 0] i want to write this, so string and int

i want to create a function with array

i want to make a function with array

I want to write with a matrix function using if for, and get this result [X, 0, 0, 0, 0] [0, X, 0, 0, 0] [0, 0, X, 0, 0] [0, 0, 0, X, 0] [0, 0, 0, 0, X]

10 and x