Spiral Matrix — JavaScript Coding Problem
Difficulty: medium | Category: array
Problem Description
Given an `m x n` matrix, return all elements of the matrix in spiral order (clockwise from the top-left).
Examples
Example 1
Input: matrix = [[1,2,3],[4,5,6],[7,8,9]]
Output: [1,2,3,6,9,8,7,4,5]
Example 2
Input: matrix = [[1,2,3,4],[5,6,7,8],[9,10,11,12]]
Output: [1,2,3,4,8,12,11,10,9,5,6,7]