exercisms

etl.go

package etl

import (
	"strings"
)

func Transform(input map[int][]string) map[string]int {
	m := make(map[string]int)

	for k, v := range input {
		for _, o := range v {
			m[strings.ToLower(o)] = k
		}
	}

	return m
}

hamming.rb

class Hamming
  def self.compute(first,second)
    diffs = first.each_char.with_index.select do |c,i|
      c != second[i] unless second[i].nil?
    end
    diffs.count
  end
end