59. Spiral Matrix II

LeetCodeArrayMatrixSimulationOpen on judge ↗

Given a positive integer n, generate an n x n matrix filled with elements from 1 to n2 in spiral order. Example 1: Input: n = 3 Output: [[1,2,3],[8,9,4],[7,6,5]] Example 2: Input: n = 1 Output: [[1]] Constraints: - 1 <= n <= 20

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solution.cppC++17

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