Course module
Data Structures — IOCL Engineers/Officers (Grade A) 2026 – Computer Science (Paper 2)
- Lessons
- 187
- Duration
- 12 hr 31 min
- PYQs
- 304
- Practice
- 955
9% of this course's PYQ weight is covered in this module.
Syllabus index
Lessons in this module
Introduction to DS
DS Basics & Types
- DS Basics & TypesPdf
- Why we study data structure and algorithmDrm Video
- What is data structureDrm Video
- Effects of Data StructureDrm Video
- Primitive Vs Non-Primitive Data StructureDrm Video
- Linear Vs Non-Linear Data StructureDrm Video
- Demo: Why we study data structure and algorithmStandard Video
- Demo: What is data structureStandard Video
Array
Array Basics & Ops
1D & 2D Addressing
3D & Multi-dim Arrays
Stack
Stack Basics & Ops
Infix Postfix Prefix
Eval of Expressions
Recursion & Stack
- Recursion & StackPdf
- Introduction to RecursionDrm Video
- Recursion Practice QuestionDrm Video
- FunctionsDrm Video
- Recursive FunctionsDrm Video
- recursive functionsDrm Video
- Stack Practice questionsDrm Video
- Stack Practice questionsDrm Video
- Stack recursion Practice questionsDrm Video
- Stack recursion Practice questionDrm Video
- Stack recursion Practice questionsDrm Video
- Recursion Practice questionsDrm Video
- Stack Practice questionsDrm Video
- Stack Practice questionsDrm Video
Queue
Basics & Stack Mix
Circular Queue
Priority Queues & Variants
Linked List
SLL Basics & Standard Operations
- Introduction To Link ListDrm Video
- Analysis Of Link ListDrm Video
- Link List Traversal Using LoopDrm Video
- Link List Traversal Using RecusrionDrm Video
- Searching An Element In Link List Using LoopDrm Video
- Searching An Element In LL Using RecursionDrm Video
- Insertion in Link ListDrm Video
- Deletion From Link ListDrm Video
Structure Modification & Pointer Logic
Tree
Binary Tree Basics & Props
Traversals & Construction
- Traversal & ConstructionPdf
- Preorder Treversal of Binary TreeDrm Video
- Inorder Traversal Of Binary TreeDrm Video
- Post Order Traversal Of Binary TreeDrm Video
- Tree traversal Practice QuestionDrm Video
- Tree traversal Practice QuestionDrm Video
- Tree traversal Practice QuestionDrm Video
- Tree Practice QuestionDrm Video
- Tree Traversal Pseudocode (Pre-order)Drm Video
- Tree traversal Pseudocode (Inorder)Drm Video
- Tree Traversal Pseudocode (Post-Order )Drm Video
- Tree Traversal Pseudocode PQDrm Video
- Tree Traversal Pseudocode PQDrm Video
BST Basics & Operations
AVL Trees & Balancing
Complete Binary Trees
Heaps & Priority Queues
Advanced & k-ary Trees
- Advanced & k-ary Trees - NotesPdf
- Threaded Binary TreeDrm Video
- K-ary TreeDrm Video
- K-ary Tree Practice Question 1Drm Video
- K-ary Tree Practice Question 2Drm Video
- K-ary Tree Practice Question 3Drm Video
- K-ary Tree Practice Question 4Drm Video
- K-ary Tree Practice Question 6Drm Video
- K-ary Tree Practice Question 7Drm Video
- K-ary Tree Practice Question 8Drm Video
Graphs
Graph Reps & Basics
DFS & Applications
BFS & Applications
Hashing
Hashing Basics & Functions
Open Addressing (Probing)
Chaining & Perf Analysis
Previous-year questions
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Explore the course
- Engineering Mathematics
- Digital Logic
- Computer Architecture
- C Language
- Algorithms
- Theory Of Computation/Automata Theory
- Compiler Design
- Operating System
- DataBase Management System/DBMS
- Computer Networks
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