Write a method reverse_words which takes a sentence as a string and reverse each word in it.

20130406_reverse_string.rb

#from stackoverflow, want to see if/how it works, not taking credit or will use if it does
def reverse_words(string) # Method reverse_string with parameter 'string'.
  loop = string.length # int loop is equal to the string's length.
  word = '' # This is what we will use to output the reversed word.
  while loop > 0 # while loop is greater than 0, subtract loop by 1 and add the string's index of loop to 'word'.
    loop -= 1 # Subtract 1 from loop.
    word += string[loop] # Add the index with the int loop to word.
  end # End while loop.
  return word # Return the reversed word.
end # End the method.

20130406_reverse_string_specs

def random_word(length = 5)
  rand(36**length).to_s(36)
end
 
describe "reverse_words" do
  it "does nothing to an empty string" do
    reverse_words("").should eq ""
  end
  it "reverses a single word" do
    word = random_word
    reverse_words(word).should eq word.reverse
  end
  it "reverses two words" do
    word1 = random_word
    word2 = random_word
    reverse_words("#{word1} #{word2}").should eq "#{word1.reverse} #{word2.reverse}"
  end
  it "reverses a sentence" do
    reverse_words("Ich bin ein Berliner").should eq "hcI nib nie renilreB"
  end
end