patternDSAAll Patterns

Pattern Library

33 patterns · 203 problems · 11 learning tiers

Patterns

across 11 tiers

Problems

203

54E · 96M · 40H

Categories

distinct topics

Completed

Category:

Level:

33 of 33 patterns

Follow tiers top → bottom for optimal learning

Foundation#1–4

Hash Maps, Prefix Sum, Stacks — the absolute must-knows.

4 patterns

Pointers#5–7

Two Pointers, Sliding Window, Fast & Slow — array mastery.

3 patterns

Linked Lists#8–9

Cyclic Sort, In-place Reversal — pointer manipulation.

2 patterns

In-place Reversal of a Linked List

5 probs

Binary Search#10–11

Binary Search and its variants — O(log n) thinking.

2 patterns

Modified Binary Search

10 probs

Trees#12–14

Tree DFS, Tree BFS, Trie — recursive tree traversal.

3 patterns

#12I

Tree Depth First Search

7 probs

#13B

Tree Breadth First Search

Graphs#15–20

DFS, BFS, Union Find, Topological Sort — graph algorithms.

6 patterns

#15I

Depth-First Search (DFS)

0 probs

#16I

Breadth-First Search (BFS)

Island (Matrix Traversal)

Topological Sort (Graph)

7 probs

Heaps#21–24

Two Heaps, Top K, K-way Merge — priority queue patterns.

4 patterns

Intervals & Greedy#25–26

Merge Intervals, Greedy Algorithms — optimization.

2 patterns

Backtracking#27–28

Subsets, Backtracking — exhaustive search with pruning.

2 patterns

Dynamic Programming#29–31

DP, 0/1 Knapsack — optimal substructure mastery.

3 patterns

0/1 Knapsack (Dynamic Programming)

6 probs

#31I

(Dynamic Programming)

0 probs

Advanced#32–33

Bitwise XOR, Multi-threaded — specialized techniques.

2 patterns

End of Roadmap

Complete all 33 patterns to master DSA interviews 🏆