anagrams.rb

#!/usr/bin/env ruby

def hash(string)
  hash = {}
  string.each_char do |c|
    hash[c] = hash[c].to_i + 1
  end
  return hash
end

def anagrams(source, target)
  return false if source == target # identical words are not anagrams
  source_hash, target_hash = hash(source), hash(target)
  source_hash.keys.each do |key|
    return false unless source_hash[key] == target_hash[key]
  end
  return source_hash.keys.length == target_hash.keys.length
end

puts anagrams("hello", "world")
puts anagrams("pluto", "toplu")