word_battle_challenge.rb

def word_battle(word_one, word_two)
    # we split the words into an array
    arr_word_one = word_one.split("")
    arr_word_two = word_two.split("")
    # we get the letters that are common to each word (using a comparison loop) and push them into an array
    common_letters = []
    arr_word_one.each do |letterone|
        arr_word_two.each do |lettertwo|
            if letterone == lettertwo
                common_letters << letterone
            end 
        end 
    end
    # we remove the duplicates so that we only have one letter of the alphabet 
    common_letters = common_letters.uniq
    # we create an alphabet
    alpha = ("a".."z").to_a
    # we compare the common letters to the alphabet (using a comparison loop), when a common letter equals an alphabet letter we make that corresponding alphabet letter nil and then create a mutated alphabet with nil values  
    mutated_alpha = []
    alpha.each do |l1|
        common_letters.each do |l2|
            if l1 == l2 
                l1 = nil 
            end 
        end
        mutated_alpha << l1
    end 
    # now we can do a simple comparison again where if letterone equals lettertwo we put the index number in the array, we do this for both words 
    total_one = []
    arr_word_one.each do |letterone|
        mutated_alpha.each_with_index do |lettertwo, index|
            if letterone == lettertwo
                total_one << (index + 1)
            end 
        end
    end 
    total_two = []
    arr_word_two.each do |letterone|
        mutated_alpha.each_with_index do |lettertwo, index|
            if letterone == lettertwo
                total_two << (index + 1)
            end 
        end
    end 
    # here we sum the arrays
    total_one = total_one.sum
    total_two = total_two.sum
    # we see if the result is a tie before we declare a winner 
    if total_one == total_two
        return "It's a tie"
    end 
    # we declare a winner
    if total_one > total_two
        return "#{word_one} is the winner with a score of #{total_one}"
    else 
        return "#{word_two} is the winner with a score of #{total_two}"
    end
end 

p word_battle("helloo", "hello")