1.6 Given an image represented by an NxN 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?
LeetCode中的原题，请参见我之前的博客Rotate Image 旋转图像。
本文转自博客园Grandyang的博客，原文链接：翻转图像[CareerCup] 1.6 Rotate Image ，如需转载请自行联系原博主。
