add leetcode problem-cn part2

算法题（国内版）/problem (English)/旋转矩阵(English) [rotate-matrix-lcci].html

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+<p>Given an image represented by an N x N matrix, where each pixel in the image is 4 bytes, write a method to rotate the image by 90 degrees. Can you do this in place?</p>
+
+<p>&nbsp;</p>
+
+<p><strong>Example 1:</strong></p>
+
+<pre>
+Given <strong>matrix</strong> = 
+[
+  [1,2,3],
+  [4,5,6],
+  [7,8,9]
+],
+
+Rotate the matrix <strong>in place. </strong>It becomes:
+[
+  [7,4,1],
+  [8,5,2],
+  [9,6,3]
+]
+</pre>
+
+<p><strong>Example 2:</strong></p>
+
+<pre>
+Given <strong>matrix</strong> =
+[
+  [ 5, 1, 9,11],
+  [ 2, 4, 8,10],
+  [13, 3, 6, 7],
+  [15,14,12,16]
+], 
+
+Rotate the matrix <strong>in place. </strong>It becomes:
+[
+  [15,13, 2, 5],
+  [14, 3, 4, 1],
+  [12, 6, 8, 9],
+  [16, 7,10,11]
+]
+</pre>