Update exercise text to be clearer

After undertaking it myself

exercise_1.rb

@@ -1,12 +1,12 @@
 # Write a program that takes a word and returns the pig latin version.
-# Here are the rules of pig latin:
+# Here are the (simplified) rules of pig latin:
 #
-# If the word starts with consonants, add them to the end and then add 'ay'
+# If the word starts with consonant, move it to the end and then add 'ay'
 # Or, if the word starts with a vowel, add 'way' to the end
 # e.g. dog  -> ogday
-#      cram -> amcray
 #      up   -> upway
 #
+# Don't worry about handling multiple consonants
 # Assume the words are lowercase.
 # Assume your user is a developer — e.g. you don't need to write a user interface.
 
@@ -18,5 +18,4 @@ def pig_latin(word)
 
 require_relative './helpers/assert_equal'
 assert_equal(pig_latin('dog'), 'ogday')
-assert_equal(pig_latin('cram'), 'amcray')
 assert_equal(pig_latin('up'), 'upway')

exercise_2.rb

@@ -1,8 +1,11 @@
-# Develop your work so far to treat 'qu' as a special case, so that those words
-# end in 'quay'
-# e.g. quick -> ickquay
-#      quilt -> iltquay
-#      qat   -> atqay
+# Develop your proram to handle multiple consonants at the start of words.
+#
+# The rule is:
+# If the word starts with one or more consonants, move them to the end.
+# e.g. cram     -> amcray
+#      sprinkle -> inklespray
+#
+# Still assume the words are lowercase.
 
 def pig_latin(word)
 
@@ -11,6 +14,7 @@ def pig_latin(word)
 ## Tests:
 
 require_relative './helpers/assert_equal'
-assert_equal(pig_latin('quick'), 'ickquay')
-assert_equal(pig_latin('quilt'), 'iltquay')
-assert_equal(pig_latin('qat'), 'atqay')
+assert_equal(pig_latin('cram'), 'amcray')
+assert_equal(pig_latin('sprinkle'), 'inklespray')
+assert_equal(pig_latin('dog'), 'ogday')
+assert_equal(pig_latin('up'), 'upway')

exercise_3.rb

@@ -1,6 +1,8 @@
-# Develop your work so far to preserve the existing capitalisation of the word
-# e.g. Dog  -> Ogday
-#      cram -> amcray
+# Develop your work so far to treat 'qu' as a special case, so that those words
+# end in 'quay'
+# e.g. quick -> ickquay
+#      quilt -> iltquay
+#      qat   -> atqay
 
 def pig_latin(word)
 
@@ -9,5 +11,6 @@ def pig_latin(word)
 ## Tests:
 
 require_relative './helpers/assert_equal'
-assert_equal(pig_latin('Dog'), 'Ogday')
-assert_equal(pig_latin('cram'), 'amcray')
+assert_equal(pig_latin('quick'), 'ickquay')
+assert_equal(pig_latin('quilt'), 'iltquay')
+assert_equal(pig_latin('qat'), 'atqay')

exercise_4.rb

@@ -1,15 +1,16 @@
-# Develop your work so far to handle sentences
-# e.g. "The quick fox jumped over the lazy dog" ->
-#      "Ethay ickquay oxfay umpedjay overway ethay azylay ogday"
+# Develop your work so far to preserve the existing capitalisation of the word
+# e.g. Dog  -> Ogday
+#      cram -> amcray
+#
+# Assume words either start with a capital letter or don't — don't worry about
+# other formats
 
-def pig_latin(sentence)
+def pig_latin(word)
 
 end
 
 ## Tests:
 
 require_relative './helpers/assert_equal'
-assert_equal(
-  pig_latin('The quick fox jumped over the lazy dog'),
-  'Ethay ickquay oxfay umpedjay overway ethay azylay ogday'
-)
+assert_equal(pig_latin('Dog'), 'Ogday')
+assert_equal(pig_latin('cram'), 'amcray')

exercise_5.rb

@@ -1,15 +1,15 @@
-# Write the program to reverse the above
-# e.g. "Ethay uickqay oxfay umpedjay overway ethay azylay ogday" ->
-#      "The quick fox jumped over the lazy dog"
+# Develop your work so far to handle sentences
+# e.g. "The quick fox jumped over the lazy dog" ->
+#      "Ethay ickquay oxfay umpedjay overway ethay azylay ogday"
 
-def reverse_pig_latin(sentence)
+def pig_latin_sentence(sentence)
 
 end
 
 ## Tests:
 
 require_relative './helpers/assert_equal'
 assert_equal(
-  reverse_pig_latin('Ethay ickquay oxfay umpedjay overway ethay azylay ogday'),
-  'The quick fox jumped over the lazy dog'
+  pig_latin_sentence('The quick fox jumped over the lazy dog'),
+  'Ethay ickquay oxfay umpedjay overway ethay azylay ogday'
 )

exercise_6.rb

@@ -0,0 +1,15 @@
+# Write the program to reverse the above
+# e.g. "Ethay uickqay oxfay umpedjay overway ethay azylay ogday" ->
+#      "The quick fox jumped over the lazy dog"
+
+def pig_latin_sentence_reverse(sentence)
+
+end
+
+## Tests:
+
+require_relative './helpers/assert_equal'
+assert_equal(
+  pig_latin_sentence_reverse('Ethay ickquay oxfay umpedjay overway ethay azylay ogday'),
+  'The quick fox jumped over the lazy dog'
+)