Anagram with Hash#inject

anagram.rb

# taking a list of words (space delimited) and groups them if they're anagrams
# example input: star mary demo hops rats posh tars mode else army shop demo will return:
# "rats star tars"
# "army mary"
# "demo demo mode"
# "hops posh shop"
# "else"

def anagrams
  words = gets.chomp.split
  anagrams_hash = words.inject({}) {|h,w| h[w.chars.sort.join] ? h[w.chars.sort.join] << w : h[w.chars.sort.join] = [w]; h}
  anagrams_hash.each {|k,v| p v.sort.join(" ")}
end