[LeetCode] Array > Rotate Image

leetcode.com/explore/interview/card/top-interview-questions-easy/92/array/770/

Explore - LeetCode

 

---

풀이

매우 간단한 정방행렬의 회전이다.

import copy
class Solution:
    def rotate(self, matrix: List[List[int]]) -> None:
        """
        Do not return anything, modify matrix in-place instead.
        """
        N = len(matrix)
        ret = copy.deepcopy(matrix)

        for r in range(N):
            for c in range(N):
                matrix[c][N-1-r] = ret[r][c]