Rotate Image LeetCode

rotateImage.js

/*
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]]
Example 3:
Input: matrix = [[1]]
Output: [[1]]
Example 4:
Input: matrix = [[1,2],[3,4]]
Output: [[3,1],[4,2]]
 
Constraints:
matrix.length == n
matrix[i].length == n
1 <= n <= 20
-1000 <= matrix[i][j] <= 1000
*/

/**
 * @param {number[][]} matrix
 * @return {void} Do not return anything, modify matrix in-place instead.
 */
 var rotate = function(matrix) {
    const rows = [];
    for (let m of matrix) {
        rows.push([])
    }
    
    for (let i = matrix.length - 1; i >= 0 ; i--) {
        const row = matrix[i];
        for (let j = 0; j < row.length; j++) {
            rows[j].push(row[j]);
        }
        matrix[i] = rows[i]
    }
    
    console.log(rows)
};

const matrix = [[5,1,9,11],[2,4,8,10],[13,3,6,7],[15,14,12,16]];

rotate(matrix);