LeetCode — Spiral Matrix IISteven Lu·FollowSep 18, 2022--ListenShareGiven a positive integer n, generate an n x n matrix filled with elements from 1 to n2 in spiral order.Example 1:Input: n = 3Output: [[1,2,3],[8,9,4],[7,6,5]]Example 2:Input: n = 1Output: [[1]]Constraints:1 <= n <= 20Solution: