Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. Example 1: Input:[ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ]]Output: [1,2,3,6,9,8,7,4,5] Example 2: Input:[ [1, 2, 3, 4], [5, 6, 7, 8], [9,10,11
Given a matrix of m x n elements (m rows, n columns), return all elements of the matrix in spiral order. Example 1: Input:[ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ]]Output: [1,2,3,6,9,8,7,4,5] Example 2: Input:[ [1, 2, 3, 4], [5, 6, 7, 8], [9,10,11,12]]
