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Course 14 · ₹1

DSA in Python, JS & PHP — Basic to Advanced

One mental model for data structures & algorithms, shown side-by-side in three languages, all the way to interview-grade patterns.

👨‍🏫 Innovesh Faculty·📺 29 lessons·⏱ ~394 minutes·🎯 Developers prepping for interviews or finally wanting DSA to click — comfortable with basic syntax in at least one of Python, JavaScript, or PHP.·₹1 one-time
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What you'll cover

1Big-O — How to Measure Code (Not Guess)
14 min
2Arrays & Strings — The Foundation
13 min
3Hash Maps — The O(1) Superpower
14 min
4Two Pointers & Sliding Window
14 min
5Stacks & Queues
13 min
6Linked Lists
14 min
7Recursion & Backtracking
14 min
8Sorting — And When To Just Use the Built-in
13 min
9Binary Search — O(log n) on Sorted Data
12 min
10Trees & Binary Search Trees
14 min
11Graphs — BFS & DFS
15 min
12Greedy Algorithms
13 min
13Bit Manipulation
13 min
14Tries (Prefix Trees)
14 min
15Union-Find (Disjoint Set)
14 min
162D Grids & Matrix Traversal
14 min
17Intervals & Sorting-Based Patterns
13 min
18Heaps & Priority Queues
15 min
19Dynamic Programming I — Memoisation & Tabulation
15 min
20Dynamic Programming II — Grids, Knapsack & Sequences
16 min
21Weighted Graphs & Shortest Paths — Dijkstra
15 min
22Topological Sort & DAGs
13 min
23Monotonic Stack & Deque Patterns
14 min
24String Matching — KMP & Rabin-Karp
14 min
25Range Queries — Prefix Sums, Fenwick & Segment Trees
14 min
26Math for Interviews — GCD, Sieve & Modular Arithmetic
13 min
27Minimum Spanning Trees — Kruskal & Prim
14 min
28Designing Data Structures — LRU Cache & Min-Stack
14 min
29Interview Patterns & a Study Plan That Works
17 min
What's next

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