Reverse Sentence - Hannah

lib/reverse_sentence.rb

@@ -1,4 +1,50 @@
 # A method to reverse the words in a sentence, in place.
 def reverse_sentence(my_sentence)
-  raise NotImplementedError
+  string_reverse(my_sentence)
+  reverse_words(my_sentence)
 end
+
+def string_reverse(my_string)
+  return my_string if my_string.nil?
+  return my_string if my_string.length <= 1
+
+  i = 0
+  j = my_string.length - 1
+  b = 0
+  while i < j
+    b = my_string[i]
+    my_string[i] = my_string[j]
+    my_string[j] = b
+    i += 1
+    j -= 1
+  end
+  return my_string
+end
+
+def reverse_words(my_words)
+  #split string into array of words
+  return my_words if my_words.nil?
+
+  new_string = ""
+  var = ""
+
+  my_words.length.times do |x|
+    if my_words[x] != " "
+      var += my_words[x]
+    else
+      new_string += string_reverse(var)
+      new_string += my_words[x]
+      var = ""
+    end
+  end
+  new_string += string_reverse(var)
+
+  my_words.length.times do |x|
+    my_words[x] = new_string[x]
+  end
+  return my_words
+end
+
+test_string = "I like tomatoes"
+
+print reverse_sentence(test_string)