| Introduction to DSA |
What are data structures? What are algorithms? Why do we care? Learn with stories and real-life examples. |
| How Computers Store and Organize Data |
Discover how your computer keeps track of information — just like a toy box or a bookshelf. |
| Big O Notation for Beginners |
Understand how to measure the speed of your code using simple graphs and pizza delivery examples. |
| Arrays – The Magic List |
Learn about arrays and how they let you keep your data in a neat line like toys on a shelf. |
| Linked Lists – The Chain of Friends |
Discover how linked lists work like friends holding hands — one pointing to the next. |
| Stacks – Last In, First Out |
Imagine a stack of pancakes! Learn how only the top one can be removed first. |
| Queues – First In, First Out |
Like a line at the ice cream shop — the first one to enter is the first one to leave. |
| Hash Tables – Super-Fast Lookup |
Learn how to find things really fast using keys, just like finding your name in a contact book. |
| Trees – The Family Tree of Data |
Discover how trees work like real family trees — with parents and children. |
| Binary Trees – Left, Right, Repeat |
Learn how each node can have two children: one on the left, one on the right. |
| Binary Search Trees (BST) – Organized Trees |
Make searching super quick using a tree where left is small, right is big. |
| Tree Traversals – Walking Through Trees |
Learn how to walk through a tree: In-order, Pre-order, Post-order. Easy and fun! |
| Graphs – Web of Connections |
Understand how things connect with each other, like cities on a map. |
| Graph Traversal: BFS and DFS |
Learn two ways to explore graphs — one level at a time or deep dive! |
| Sorting Algorithms – Putting Things in Order |
Learn how to sort numbers or names like you sort cards or stickers. |
| Bubble Sort – The Slow but Simple Sorter |
Understand how to sort by swapping neighbors like bubbles rising. |
| Selection Sort – The Picker |
Find the smallest number again and again and move it to the front. |
| Insertion Sort – One by One Organizer |
Insert each item into the right place like arranging cards in hand. |
| Merge Sort – Divide and Conquer |
Split the list in halves and merge it back in order — like sorting puzzle pieces. |
| Quick Sort – The Smart Divider |
Pick a pivot and sort around it. Fast and clever! |
| Recursion – When Functions Call Themselves |
Like a mirror looking into another mirror — functions that repeat themselves. |
| Dynamic Programming – Smart Reuse of Work |
Save your answers and reuse them to solve problems faster. |
| Greedy Algorithms – One Good Choice at a Time |
Learn how to make the best local choice every step of the way. |
| Backtracking – Try, Try Again |
Learn how to explore all paths and undo steps when needed — like solving a maze. |
| Real-World DSA Examples |
See how DSA powers your favorite apps, from maps to messaging. |
| DSA in Coding Interviews – Practice Questions |
Master questions that interviewers love to ask — with step-by-step solutions. |