Arrays (Row Major order, Column Major order, Binary addressing), Operators in C, Pointers in C, Structures (Self referential Structures, Malloc), Recursion, Linked List (Single linked list, double linked list, traversal, insertion and deletion), Stacks and Queues, Trees, Graphs (BFS and DFS), Hashing (Direct Address Table, Chaining, Open Addressing, Linear Probing, Quadratic Probic, Double Hashing)