Module 1

TIME COMPLEXITY

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Module 2

DSA Problem-Solving Checklist (To Train Patterns)

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Module 3

20 PATTERN Architecture

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Module 4

PATTERN 1: Simple Traversal & Accumulation

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Module 5

PATTERN 2: Hashing as State Memory

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Module 6

PATTERN 3: Prefix / Suffix / Precomputation

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Module 7

PATTERN 4: Two Pointers & Sliding Window

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Module 8

PATTERN 5: Linked List Thinking (Pointer Manipulation Mastery)

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Module 9

PATTERN 6: Sorting & Ordering Logic

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Module 10

PATTERN 7: Binary Search (Index + Answer)

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Module 11

PATTERN 8: Monotonic Stack (Next Greater / Smaller Logic)

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Module 12

PATTERN 9: Greedy Algorithms

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Module 13

PATTERN 10: Recursion & Backtracking

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Module 14

PATTERN 11: Trees (Binary Tree + BST)

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Module 15

PATTERN 12: Heap / Priority Queue Thinking

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Module 16

PATTERN 13: Dynamic Programming (DP)

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Module 17

PATTERN 14A: Graph Traversal & Properties

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Module 18

PATTERN 14B: Multi-Source BFS / Level Expansion

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Module 19

PATTERN 15: Union–Find / Disjoint Set (Connectivity Thinking)

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Module 20

PATTERN 16: Interval DP / Partition DP (Choose-the-Split Thinking)

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Module 21

PATTERN 17: Trie / Prefix Tree Thinking

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Module 22

PATTERN 18: Contribution Technique (Count-Per-Element Thinking)

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Module 23

PATTERN 19: Bit Manipulation (XOR / Mask Thinking)

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Module 24

PATTERN 20: State Machine / Greedy Transitions

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