euler/ruby/euler004.rb

require_relative 'euler'

def products_of_three_digits
  (100..999).to_a.combination(2).map { |p| p.inject(:*) }
end

def solution
  products_of_three_digits.select { |x| Euler.palindrome?(x) }.max
end
cleans up some older solutions + new Euler module 2014-11-20 19:38:31 +00:00			`require_relative 'euler'`
initial commit 2014-04-25 23:59:14 +00:00
cleans up some older solutions + new Euler module 2014-11-20 19:38:31 +00:00			`def products_of_three_digits`
things 2018-02-21 21:00:08 +00:00			`(100..999).to_a.combination(2).map { \|p\| p.inject(:*) }`
initial commit 2014-04-25 23:59:14 +00:00			`end`

cleans up some older solutions + new Euler module 2014-11-20 19:38:31 +00:00			`def solution`
			`products_of_three_digits.select { \|x\| Euler.palindrome?(x) }.max`
initial commit 2014-04-25 23:59:14 +00:00			`end`