Euler29

euler29.rb

#!/usr/bin/env ruby
START=2
STOP=100

pairs_without_repeats = []
(START..STOP).each { |outer|
  (START..outer).each{ |inner|
    pairs_without_repeats << [outer,inner]
  }
}

results = []
pairs_without_repeats.each { |pair|
  results << pair[0] ** pair[1]
  results << pair[1] ** pair[0]
}

p results.sort.uniq.size