Update README.md

yanaga · yanaga · commit 86b9269ad64a · 2014-12-02T16:36:34.000-02:00
diff --git a/README.md b/README.md
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-stream-lambda
+Simple Kata for learning Java 8 Streams and Lambdas
 =============
 
-Simple Kata for learning Java 8 Streams and Lambdas
+Class `ListTransformer` accepts a `List` as an argument and has three methods:
+```Java
+	/**
+	 * This method should take the String List and sort all the String elements in ascending (ASCII) order.
+	 * @return The sorted values in ascending ASCII order.
+	 */
+	public List<String> getSortedStrings();
+	
+		/**
+	 * This method should take the String List and:
+	 * <ol>
+	 *     <li>filter the elements that contains one or more digits;</li>
+	 *     <li>transform (map) the remaining Strings into Integers;</li>
+	 *     <li>sort the Integers in ascending order.</li>
+	 * </ol>
+	 * @return
+	 */
+	public List<Integer> getSortedIntegers();
+	
+	/**
+	 * This method should take the String List and:
+	 * <ol>
+	 *     <li>filter the elements that contains one or more digits;</li>
+	 *     <li>transform (map) the remaining Strings into Integers;</li>
+	 *     <li>sort the Integers in descending order.</li>
+	 * </ol>
+	 * @return
+	 */
+	public List<Integer> getSortedDescendingIntegers();
+```
+
+We have an accompanying JUnit test called `ListTransformerTest` to validate your code.
+
+If you're not familiar with lambdas we encourage you to first make the tests pass using the imperative syntax.
+Then you can refactor your code with small steps and assure that your tests are still passing.
+
+Enjoy and have nice lambdas! :-)
