How to turn a "random" number read from a text file into an array

Question

I am trying to turn a number into a text file that I found with a regular expression, into a list of numbers starting from zero.

for example, the number 4I need to create an array consisting of 0,1,2,3.

How can I do that?

Answer 1

You can use the range operator as:

@arr = 0..$number_read_from_file - 1;