Factorial in Ruby

Factorial

in Ruby

Welcome to the Factorial in Ruby page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

def usage!
  abort("Usage: please input a non-negative integer")
end

input = ARGV.first

usage! if input.nil? || input.strip.empty?

begin
  num = Integer(input)
rescue ArgumentError
  usage!
end

usage! if num.negative?

puts (1..num).reduce(1, :*)

Factorial in Ruby was written by:

• Ștefan-Iulian Alecu

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

No 'How to Implement the Solution' section available. Please consider contributing.

How to Run the Solution

No 'How to Run the Solution' section available. Please consider contributing.