What is the time complexity of LeetCode 329 solution?

O(m*n) — visits each cell once, checks four neighbors.

Why use DFS over BFS for longest increasing path?

DFS backtracks naturally for max depth; BFS fits shortest path better.

No — strictly increasing values enforce DAG, no loops.

A matrix hides twisting paths of rising numbers. Unpack the DFS-memo trick that finds the longest one without exploding your stack.

theAIcatchup Apr 09, 2026 4 min read

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#DFS Memoization #Dynamic Programming #LeetCode 329 #Matrix Algorithms #coding interviews

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Originally reported by Dev.to