Z- algorithm for pattern matching, Trie-Aho-Corasick Automaton(FGREP), Hungarian Algorithm for he Munkres Assignment  Problem, Binary Lifting, Eulerian Tour for Least Common Ancestor(LCA) using Sparse Table coupled with Farach-Colton and Bender optimization,  Wellsh Powell Algorithm for Graph Coloring, Kahn's Agorithm for TopSort and Cycle detection in Graphs. Sparse Table for range queries. Johnson's Algorithm. AHU Encoding. Kosaraju's Algorithm for strongly connected components. Tarjan's Algorithm. Union Find. Fenwick Tree. Segment Tree. Ford Fulkerson. Edmonds-Karp. Dinic's Algorithm. Capacity Scalling. Push Relabel. Dijkstra's Algorithm. Bellman Ford's Algorithm. Floyd Warshall's Algorithm and much more..