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DSA Tutorial
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DS Tutorial
Data Structures & Algorithms
What is Data Structure?
What is an Algorithm?
Time Complexity (Big-O)
Space Complexity
Asymptotic Notation
Analyze Code Complexity
How to Approach Problems
Problem Solving Strategy
How to Identify Patterns
Brute Force → Optimization
Choosing the Right DS
Dry Run & Debug Approach
Basic Math
GCD & LCM
Prime Numbers
Modular Arithmetic
Array
Array Basics
2D Arrays
Dynamic Arrays
Prefix Sum
Kadane's Algorithm
Common Mistakes
Practice Problems
Hashing
HashMap Basics
Frequency Count
Set vs Map
Subarray Problems
2Sum Variations
Common Mistakes
Practice Problems
String
String Basics
String Traversal
Palindrome
Frequency Count
Pattern Matching
Common Mistakes
Practice Problems
Patterns
Two Pointers
Sliding Window
Prefix Sum Pattern
Fast & Slow Pointer
Binary Search Pattern
Meet in the Middle
Searching
Linear Search
Binary Search
Binary Search on Answer
Binary Search Variations
Lower & Upper Bound
Practice Problems
Sorting
Bubble Sort
Selection Sort
Insertion Sort
Merge Sort
Quick Sort
Common Mistakes
Practice Problems
Recursion
Recursion Basics
Subsets
Permutations
Common Mistakes
Backtracking
Backtracking Basics
Decision Tree Thinking
Combination Sum
N-Queens
Sudoku Solver
Word Search
Common Mistakes
Practice Problems
Stack
Stack Basics
Monotonic Stack
Next Greater Element
Min Stack
Expression Evaluation
Common Mistakes
Practice Problems
Queue
Queue Basics
Queue in BFS
Circular Queue
Priority Queue
Deque
Common Mistakes
Practice Problems
Linked List
Linked List Basics
Reverse a List
Cycle Detection
Fast & Slow Pointer
Merge Two Lists
Doubly Linked List
LRU Cache
Common Mistakes
Practice Problems
Heap / Priority Queue
Min & Max Heap
Top K Problems
Merge K Lists
Median in Stream
Heap + Greedy Combos
Practice Problems
Trees
Binary Tree
DFS Traversals
BFS / Level Order
Height & Diameter
LCA
Tree Views
Path Problems
Common Mistakes
Practice Problems
Binary Search Tree
BST Basics
Insert & Delete
Validate BST
Kth Smallest
Graph
Graph Basics
BFS
DFS
Graph Representation
Connected Components
Cycle Detection
Topological Sort
Shortest Path (BFS)
Dijkstra's
Bellman-Ford
Floyd Warshall
Union Find
MST
Common Mistakes
Practice Problems
Algorithm Paradigms
Divide & Conquer
Greedy Paradigm
DP Paradigm
Paradigm Comparison
Greedy
Greedy Basics
Activity Selection
Interval Problems
Job Scheduling
Gas Station Problem
Greedy + Heap Patterns
Common Mistakes
Dynamic Programming
DP Patterns Overview
State Transition Thinking
Memo vs Tabulation
Fibonacci Pattern
1D DP
2D DP
Knapsack
Partition DP
DP on Subsequences
LIS
LCS
DP on Strings
DP on Grids
DP on Trees
Bitmask DP
Common Mistakes
Practice Problems
Trie
Trie Basics
Insert & Search
Word Search Problems
Advanced Trees
AVL Tree
Segment Tree
Bit Manipulation
Bit Basics (AND, OR, XOR)
Bit Tricks & Properties
XOR Tricks
Bit Masking
Subset Generation using Bits
Power of 2 & Bit Hacks
Advanced Bit Manipulation
Practice Problems
Disjoint Set (Deep Dive)
Union-Find Deep Dive
Path Compression
Disjoint Set Applications
Must-Solve Lists
Top 100 DSA Problems
Blind 75
NeetCode 150
Top 50 Must-Solve
Pattern → Problem Map
Two Pointers Problems
Sliding Window Problems
Binary Search Problems
BFS / DFS Problems
Backtracking Problems
DP Pattern Problems
Greedy + Heap Problems
Difficulty Progression
Easy Problems
Medium Problems
Hard Problems
Easy → Medium Ladder
Medium → Hard Ladder
Interview Preparation
FAANG Question Bank
Product-Based Companies
Service-Based Companies
Mixed Problem Sets
Mock Interview Simulator
Revision & Mock Strategy
Weekly Revision Plan
Post-Topic Mixed Problems
Spaced Repetition Guide
Mock Interview Schedule
Self-Assessment Checklist
Topics
01 — DS Tutorial
02 — Problem Solving Strategy
03 — Basic Math
04 — Array
05 — Hashing
06 — String
07 — Patterns
08 — Searching
09 — Sorting
10 — Recursion
11 — Backtracking
12 — Stack
13 — Queue
14 — Linked List
15 — Heap / Priority Queue
16 — Trees
17 — Binary Search Tree
18 — Graph
19 — Algorithm Paradigms
20 — Greedy
21 — Dynamic Programming
22 — Trie
23 — Advanced Trees
24 — Bit Manipulation
25 — Disjoint Set (Deep Dive)
26 — Must-Solve Lists
27 — Pattern → Problem Map
28 — Difficulty Progression
29 — Interview Preparation
30 — Revision & Mock Strategy
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