Rotate Image.py

# https://leetcode.com/problems/rotate-image/
# Hak Soo Kim
# 1/12/2022

class Solution(object):
    def rotate(self, matrix):
        matrix.reverse()
        for i in range(len(matrix)):
            j = i + 1
            while (j < len(matrix)):
                matrix[i][j], matrix[j][i] = matrix[j][i], matrix[i][j]
                j += 1
        """
        :type matrix: List[List[int]]
        :rtype: None Do not return anything, modify matrix in-place instead.
        """

# You are given an n x n 2D matrix representing an image, rotate the image by 90 degrees (clockwise).
#
# You have to rotate the image in-place, which means you have to modify the input 2D matrix directly. DO NOT allocate another 2D matrix and do the rotation.
#
# Example 1:
#
#
# Input: matrix = [[1,2,3],[4,5,6],[7,8,9]]
# Output: [[7,4,1],[8,5,2],[9,6,3]]
#
# Example 2:
#
#
# Input: matrix = [[5,1,9,11],[2,4,8,10],[13,3,6,7],[15,14,12,16]]
# Output: [[15,13,2,5],[14,3,4,1],[12,6,8,9],[16,7,10,11]]
#
# Constraints:
#
# n == matrix.length == matrix[i].length
# 1 <= n <= 20
# -1000 <= matrix[i][j] <= 1000