Learn DSA

Master data structure patterns, algorithm intuition, and pattern recognition to crack any coding interview in Java, Python, or C++ — 102 topics across 17 chapters.

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102

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17

Chapters

30h

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1

Foundations

6 topics

0% done

1Problem Solving Framework 2Time Complexity 3Big O Notation 4Space Complexity 5Recursion 6Common Interview Patterns

2

Arrays

9 topics

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1Array Fundamentals 2Array Operations & Complexity 3Two Pointers Pattern 4Sliding Window Pattern 5Prefix Sum Pattern 6Kadane's Algorithm 7Cyclic Sort 8Common Interview Patterns 9Arrays Practice & Revision

3

Strings

7 topics

0% done

1String Fundamentals 2String Operations & Manipulation 3String Two-Pointer & Sliding Window 4Pattern Matching Algorithms 5Trie (Prefix Tree) Introduction 6Common Interview Patterns 7Strings Practice & Revision

4

Sorting Algorithms

7 topics

0% done

1Sorting Fundamentals 2Comparison Sorting 3Merge Sort 4Quick Sort & Quick Select 5Counting & Bucket Sort 6Common Interview Patterns 7Practice & Revision

5

Binary Search

6 topics

0% done

1Binary Search Fundamentals 2Lower & Upper Bound (Variations)3Binary Search on Answer 4Search in 2D Matrix (Advanced Problems)5Common Interview Patterns 6Practice & Revision

6

Hash Maps & Sets

5 topics

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1HashMap Fundamentals 2HashMap Operations 3Frequency Counting 4Common Interview Patterns 5Practice & Revision

7

Linked Lists

6 topics

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1Linked List Fundamentals 2Linked List Operations 3Fast & Slow Pointers (Floyd's)4Reversal & Merging 5Common Interview Patterns 6Practice & Revision

8

Stacks & Queues

6 topics

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1Stacks & Queues Fundamentals 2Stack Operations & Design 3Queue & Deque 4Monotonic Stack & Queue 5Common Interview Patterns 6Practice & Revision

9

Trees

6 topics

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1Binary Tree Fundamentals 2Tree DFS & BFS 3Binary Search Tree 4Advanced Tree Patterns 5Common Interview Patterns 6Practice & Revision

10

Heaps & Priority Queues

6 topics

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1Heap Fundamentals 2Heap Operations & HeapSort 3Top K Patterns & Running Median 4Scheduling & Intervals 5Common Interview Patterns 6Practice & Revision

11

Trie (Prefix Tree)

5 topics

0% done

1Trie Fundamentals 2Trie Operations 3Trie Applications & Autocomplete 4Common Interview Patterns 5Practice & Revision

12

Graphs

6 topics

0% done

1Graph Fundamentals 2Graph Traversal (DFS & BFS)3Shortest Path 4Advanced Graph Algorithms 5Common Interview Patterns 6Practice & Revision

13

Backtracking

5 topics

0% done

1Backtracking Fundamentals 2Subsets & Permutations 3Constraint Problems 4Common Interview Patterns 5Practice & Revision

14

Greedy Algorithms

5 topics

0% done

1Greedy Fundamentals 2Interval Problems 3Classic Greedy Problems 4Common Interview Patterns 5Practice & Revision

15

Dynamic Programming

6 topics

0% done

1DP Fundamentals 21D DP 32D DP 4Advanced DP Patterns 5Common Interview Patterns 6Practice & Revision

16

Bit Manipulation

5 topics

0% done

1Bit Fundamentals 2Common Bit Tricks 3Bitmasking 4Common Interview Patterns 5Practice & Revision

17

Pattern Recognition Center

6 topics

0% done

1Pattern Recognition Framework 2Decision Trees 3Pattern Comparison 4Interview Strategy 5Common Interview Patterns 6Revision & Cheat Sheet