Leetcode Problem 54. Spiral Matrix

54. Spiral Matrix

Leetcode Solutions

Approach: Set Up Boundaries

  1. Initialize the boundaries up, right, down, and left to their respective starting values.
  2. Initialize an empty list result to store the spiral order.
  3. While the boundaries do not overlap: a. Traverse from left to right and add elements to result, then update up boundary. b. Traverse from up to down and add elements to result, then update right boundary. c. Check if up boundary is less than down boundary, then traverse from right to left and add elements to result, then update down boundary. d. Check if left boundary is less than right boundary, then traverse from down to up and add elements to result, then update left boundary.
  4. Return the result list.
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Approach: Mark Visited Elements

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