Section 1Understand Problem
Section 01
Understand the problem
Restate the problem precisely. Interviewers reward candidates who pause, define the contract, and name the guarantees before coding.
Problem statement
Given an `m x n` matrix, return all elements of the matrix in spiral order — starting at the top-left and walking right, down, left, up, repeating inward.
Example
matrix = [[1,2,3],[4,5,6],[7,8,9]] → [1,2,3,6,9,8,7,4,5]
Constraints
1 ≤ m, n ≤ 10 · −100 ≤ matrix[i][j] ≤ 100
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