Leetcode题库48. 旋转图像(python实现)

• 思路
• 代码

先转置，后水平翻转
没错，这是一道中等难度的题

class Solution:
    def rotate(self, matrix: List[List[int]]) -> None:
        n = len(matrix)
        # 转置
        for i in range(n):
            for j in range(i):
                matrix[i][j], matrix[j][i] = matrix[j][i], matrix[i][j]
        print(matrix)
        # 水平翻转
        for i in range(n):
            for j in range(n // 2):
                matrix[i][j], matrix[i][n - j - 1] = matrix[i][n - j - 1], matrix[i][j]