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Spiral Matrix

MediumMatrix

Given an m x n matrix, return all elements of the matrix in spiral order.

Example:

Input: matrix = [[1,2,3],[4,5,6],[7,8,9]]
Output: [1,2,3,6,9,8,7,4,5]

Constraints:

  • •m == matrix.length
  • •n == matrix[i].length
  • •1 <= m, n <= 10
  • •-100 <= matrix[i][j] <= 100