topic description
给你一幅由 N × N 矩阵表示的图像，其中每个像素的大小为 4 字节。请你设计一种算法，将图像旋转 90 度。
不占用额外内存空间能否做到？
示例 1:
给定 matrix =
[
[1,2,3],
[4,5,6],
[7,8,9]
],
原地旋转输入矩阵，使其变为:
[
[7,4,1],
[8,5,2],
[9,6,3]
]
示例 2:
给定 matrix =
[
[ 5, 1, 9,11],
[ 2, 4, 8,10],
[13, 3, 6, 7],
[15,14,12,16]
],
原地旋转输入矩阵，使其变为:
[
[15,13, 2, 5],
[14, 3, 4, 1],
[12, 6, 8, 9],
[16, 7,10,11]
]
来源：力扣（LeetCode）
链接：https://leetcode.cn/problems/rotate-matrix-lcci
著作权归领扣网络所有。商业转载请联系官方授权，非商业转载请注明出处。Start solving problems (python to Go)
practical application
This function can be used for image rotation operations in image processing . In practical applications, image rotation is a common operation, which can be used to correct the direction of the image, realize the flip effect of the image, and perform the geometric transformation of the image, etc.
For example, in the field of computer vision, image rotation can be used for face recognition. By rotating the image to the correct orientation, the accuracy of the face recognition algorithm can be improved.
In addition, image rotation can also be applied to the editing function in the image processing software. Users can select the rotation angle and rotate the image according to the specified angle to achieve different effects.
To sum up, image rotation is one of the commonly used operations in image processing. It can be widely used in computer vision, image processing software and other fields to achieve image direction correction, flip effect, geometric transformation, etc.
