旋转图像

顺时针90°旋转先转置，再对每行反转

逆时针90°相反

class Solution:
    def rotate(self, matrix: List[List[int]]) -> None:
        """
        Do not return anything, modify matrix in-place instead.
        """

        maxi = len(matrix)
        if maxi == 0:
            return
        maxj = len(matrix[0])
        if maxj == 0:
            return
        
        for i in range(maxi):
            for j in range(i):
                temp = matrix[i][j]
                matrix[i][j] = matrix[j][i]
                matrix[j][i] = temp
        
        for i in range(maxi):
            for j in range(maxj // 2):
                temp = matrix[i][maxj - 1 - j]
                matrix[i][maxj - 1 - j] = matrix[i][j]
                matrix[i][j] = temp