Nov 5, 2025
[Easy] 20. Valid Parentheses
leetcodealgorithmeasycppstringstackproblem-solving
Nov 5, 2025
[Medium] 525. Contiguous Array
leetcodealgorithmmediumcpparrayshash-mapprefix-sumproblem-solving
Nov 5, 2025
[Hard] 480. Sliding Window Median
leetcodealgorithmhardcpparraysmultisetsliding-windowtwo-heapsproblem-solving
Nov 5, 2025
[Hard] 239. Sliding Window Maximum
leetcodealgorithmhardcpparraysdequesliding-windowmonotonic-queueproblem-solving
Nov 5, 2025
[Easy] 485. Max Consecutive Ones
leetcodealgorithmeasycpparrayssliding-windowproblem-solving
Nov 5, 2025
[Medium] 18. 4Sum
leetcodealgorithmmediumcpparraystwo-pointerssortingproblem-solving
Oct 29, 2025
Minimal, copy-paste C++ for tree traversals, LCA (binary lifting), segment tree, Fenwick tree, and HLD skeleton.
leetcodetemplatestrees
Oct 29, 2025
Minimal, copy-paste C++ for combinatorics (nCk mod P) and 2D geometry primitives (cross product, point on segment).
leetcodetemplatesmathgeometry
Oct 29, 2025
Minimal, copy-paste C++ for graph traversal, shortest paths, and topological sort. 0-indexed unless noted.
leetcodetemplatesgraph
Oct 29, 2025
Minimal, copy-paste C++ for 1D/2D DP, LIS, interval DP, state machine, digit DP, and bitmask DP.
leetcodetemplatesdynamic-programming