Spiral Matrix
Detailed guide and Python implementation for the 'Spiral Matrix' problem.
Problem Statement
Given an m x n matrix, return all elements of the matrix in spiral order.
Implement a function spiralOrder(matrix: list) -> list that returns the elements in spiral order.
- •m == matrix.length
- •n == matrix[i].length
- •1 <= m, n <= 10
- •-100 <= matrix[i][j] <= 100
Examples
[[1,2,3],[4,5,6],[7,8,9]]
[1,2,3,6,9,8,7,4,5]
Spiral order: right across top [1,2,3], down right side [6,9], left across bottom [8,7], up left side [4], then center [5].
[[1,2,3,4],[5,6,7,8],[9,10,11,12]]
[1,2,3,4,8,12,11,10,9,5,6,7]
Spiral order through a 3x4 matrix.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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