laura_reverse_words | Nodes

lib/reverse_words.rb

@@ -1,4 +1,45 @@
+require 'pry'
 # A method to reverse each word in a sentence, in place.
 def reverse_words(my_words)
-  raise NotImplementedError
+  if my_words == nil || my_words == "" || my_words.length == 1
+    return my_words
+  end
+  i = 0
+  while i < my_words.length
+    start_index = 0
+    end_index = 0
+    while my_words[i] == " "
+      i += 1
+    end
+    if my_words[i] != " "
+      start_index = i
+    end
+    # creates an infinitive loops
+    while my_words[i + 1] != " " && my_words[i + 1] != nil
+      i += 1
+    end
+    end_index = i
+    string_reverse(my_words, start_index, end_index)
+    i += 1
+  end
+  return
+end
+
+def string_reverse(my_string, start_index, end_index)
+  if my_string == nil || my_string == "" || my_string.length == 1
+    return my_string
+  else
+    i = start_index
+    j = end_index
+    while i < j
+      # swap in place
+      char = my_string[i]
+      my_string[i] = my_string[j]
+      my_string[j] = char
+
+      i += 1
+      j -= 1
+    end
+  end
+  return my_string
 end

specs/reverse_words_spec.rb

@@ -21,7 +21,7 @@
     end
   end
 
-  # check for edge cases
+  #check for edge cases
   describe "edge cases" do
     # if it's a string parameter, check for empty
     it "reverse each word in an empty sentence" do