Rotate Image
You are given an n x n grid of numbers. Rotate it 90 degrees clockwise, so the first row ends up as the last column, the second row as the second-to-last column, and so on.
You must do this in place: change the grid you were given, and do not create a second grid. The function returns nothing; the tests inspect the grid after it returns.
Constraints
1 <= n <= 20-1000 <= matrix[i][j] <= 1000
Examples
Example 1
Input: matrix = [[1,2,3],[4,5,6],[7,8,9]] Output: [[7,4,1],[8,5,2],[9,6,3]]
The first row 1 2 3 becomes the last column, read top to bottom. The test checks the matrix after your function returns.
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]]
The same idea on a 4 x 4 grid: the bottom-left corner 15 moves to the top-left.
Example 3
Input: matrix = [[1]] Output: [[1]]
JavaScript you'll use: Arrays: create, read, update Destructuring, spread and rest
/**
* @param {number[][]} matrix
* @return {void}
*/
function rotate(matrix) {
}
Ctrl/⌘ + ' runs the examples, Ctrl/⌘ + Enter submits. Use console.log freely: output shows under Console. In the editor, press Esc then Tab to move focus out.