Ruby way to group anagrams in string array

Question

I implemented a function to group anagrams. In a nutshell:

input: [\'cars\', \'for\', \'potatoes\', \'racs\', \'four\',\'scar\', \'creams\', scream\']

output

Answer 1

You could use the partition function instead of select, implemented in Enumerable. It splits the entries within the array according to the decision-function into two arrays.

def group_anagrams(words)
  array = []
  until words.empty? 
    word = words.first
    delta, words = words.partition { |match| word.downcase.chars.sort.join.eql?(match.downcase.chars.sort.join ) } )
    array += delta
  end
  array
end

(untested)