Today's Challenge

https://leetcode.com/problems/rotate-image/

Rotate Image - LeetCode

오랫만에 내 손으로 풀어봄.
아래서 부터 훑어서 올라오면 됨.

class Solution:
    def rotate(self, matrix: List[List[int]]) -> None:
        """
        Do not return anything, modify matrix in-place instead.
        """
        n = len(matrix)
        ar = [[0 for _ in range(n)] for __ in range(n)]
        for i in range(n):
            for j in range(n):
                 ar[i][j] = matrix[n-j-1][i]
                    
        for i in range(n):
            for j in range(n):
                 matrix[i][j] = ar[i][j]