Spiral Matrix II — Java Coding Problem
Difficulty: medium | Category: array
Problem Description
Given a positive integer `n`, generate an `n x n` matrix filled with elements from 1 to n² in spiral order.
Examples
Example 1
Input: n = 3
Output: [[1,2,3],[8,9,4],[7,6,5]]
Example 2
Input: n = 1
Output: [[1]]