today update

Author: jackzhenguo

README.md

@@ -2,12 +2,15 @@
 
 ## `Today Update`
 ### Array
-#### 532 K-diff Pairs in an Array
-*  [Github:#532 K-diff Pairs in an Array](/Array/Array.Lib/FindPairsSln.cs)
-*  [CSDN:#532 K-diff Pairs in an Array](http://blog.csdn.net/daigualu/article/details/71129806)
-#### 217 Contains Duplicate
-*  [Github:#217 Contains Duplicate](/Array/Array.Lib/ContainsItemSln.cs)
-*  [CSDN:#217 Contains Duplicate](http://blog.csdn.net/daigualu/article/details/71123673)
+#### 448 Find All Numbers Disappeared in an Array
+*  [Github:#448 Find All Numbers Disappeared in an Array](/Array/Array.Lib/DisappearElementsSln.cs)
+*  [CSDN:#448 Find All Numbers Disappeared in an Array](http://blog.csdn.net/daigualu/article/details/71168875)
+#### 219 Contains Duplicate II
+*  [Github:219 Contains Duplicate II](/Array/Array.Lib/ContainsDuplicateIISln.cs)
+*  [CSDN:219 Contains Duplicate II](http://blog.csdn.net/daigualu/article/details/71166985)
+#### 189. Rotate Array
+*  [Github:189. Rotate Array](/Array/Array.Lib/RotateArraySln.cs)
+*  [CSDN:189. Rotate Array](http://blog.csdn.net/daigualu/article/details/71159419)
 
 ## Solution List
 solutions using C# for leetcode according to tags of questions
@@ -189,7 +192,12 @@ public IList<int> GetRow(int rowIndex) {
         return i;
     }
 ```
-
+#### 532 K-diff Pairs in an Array
+*  [Github:#532 K-diff Pairs in an Array](/Array/Array.Lib/FindPairsSln.cs)
+*  [CSDN:#532 K-diff Pairs in an Array](http://blog.csdn.net/daigualu/article/details/71129806)
+#### 217 Contains Duplicate
+*  [Github:#217 Contains Duplicate](/Array/Array.Lib/ContainsItemSln.cs)
+*  [CSDN:#217 Contains Duplicate](http://blog.csdn.net/daigualu/article/details/71123673)
 
 ## Hash Table
 * [#136 	Single number](/HashTable/HashTable.Lib/SingleOneSln.cs)