Character counting

def count_letters(str) 
  data = {}
  str.split('').each do |l| 
    puts l 
    next if l == ' '
    if data[l].nil? 
      data[l] = 1 
    else
      data[l] += 1  
    end 
  end 
  p data
end 

#count_letters("counting these letters")

def letter_count_index(str)
  data = Hash.new {|h,k| h[k]=[]}
  str.split('').each_with_index do |item, index| 
    data[item] << index
  end 
  p data
end 

letter_count_index("counting these letters")