2016 Update

Task/String-matching/Elixir/string-matching.elixir

@@ -7,12 +7,22 @@ String.starts_with?(s1, s3)
 String.starts_with?(s2, s3)
 # => false
 
+String.contains?(s1, s3)
+# => true
+String.contains?(s2, s3)
+# => true
+
 String.ends_with?(s1, s3)
 # => false
 String.ends_with?(s2, s3)
 # => true
 
-String.contains?(s1, s3)
-# => true
-String.contains?(s2, s3)
-# => true
+
+# Optional requirements:
+Regex.run(~r/#{s3}/, s1, return: :index)
+# => [{0, 2}]
+Regex.run(~r/#{s3}/, s2, return: :index)
+# => [{2, 2}]
+
+Regex.scan(~r/#{s3}/, "abcabc", return: :index)
+# => [[{0, 2}], [{3, 2}]]