Nov 24, 2025
[Easy] 938. Range Sum of BST
leetcodealgorithmeasycpptreebstdfsproblem-solving
Nov 24, 2025
[Easy] 408. Valid Word Abbreviation
leetcodealgorithmeasycppstringtwo-pointersproblem-solving
Nov 24, 2025
[Easy] 1047. Remove All Adjacent Duplicates In String
leetcodealgorithmeasycppstringstacktwo-pointersproblem-solving
Nov 24, 2025
Minimal, copy-paste Python for sliding window, two pointers, string matching, manipulation, and parsing. See also Arrays & Strings for KMP and rolling hash.
leetcodetemplatesstring
Nov 24, 2025
Minimal, copy-paste Python for BFS queue, monotonic queue, priority queue, circular queue, and deque. See also Graph and Data Structures (monotonic queue).
leetcodetemplatesqueue
Nov 24, 2025
Minimal, copy-paste Python for bit operations, fast exponentiation, GCD/LCM, primes, and number theory. See also Math & Geometry.
leetcodetemplatesmathbit-manipulation
Nov 24, 2025
Minimal, copy-paste Python for traversal, two pointers, dummy node, reversal, merge, cycle detection, and circular list.
leetcodetemplateslinked-list
Nov 24, 2025
Minimal, copy-paste Python for graph DFS, grid DFS, tree DFS, memoization, and iterative DFS. See also Graph and Backtracking.
leetcodetemplatesdfsgraph
Nov 24, 2025
Minimal, copy-paste Python for LRU/LFU cache, Trie, time-based key-value store, and common design patterns.
leetcodetemplatesdesign
Nov 24, 2025
Minimal, copy-paste C++ for graph and grid BFS, multi-source BFS, shortest path, and level-order traversal. See also Graph for Dijkstra and 0-1 BFS.
leetcodetemplatesbfsgraph