16 lines
271 B
Ruby
16 lines
271 B
Ruby
|
require_relative 'euler'
|
||
|
|
||
|
def products_of_three_digits
|
||
|
[].tap do |products|
|
||
|
(100..999).each do |i|
|
||
|
(100..999).each do |j|
|
||
|
products << i*j
|
||
|
end
|
||
|
end
|
||
|
end
|
||
|
end
|
||
|
|
||
|
def solution
|
||
|
products_of_three_digits.select { |x| Euler.palindrome?(x) }.max
|
||
|
end
|