Think in patterns.
Solve like it’s the interview.
hand-picked DSA problems in C#, Java, Python, C++ and JavaScript. Run your code, climb the leaderboard and keep your streak alive.
- 16problems
- 12core patterns
- 5languages
- 2 Lakh+learners trained
Bubble sort
ArraysO(n²)Running
Compare neighbours, swap when out of order.
Inorder traversal
TreesDFSO(n)
Visit order:
Breadth-first search
GraphsQueueO(V+E)
Level order:
Longest common subsequence
Dynamic ProgrammingO(mn)
dp[i][j] = best length for the first i and j characters.
Browse by pattern
Master the idea once, solve the whole family.
| # | Title | Acceptance | Difficulty |
|---|---|---|---|
| 1 | Find the Nth Fibonacci Number Efficiently Data Structures Basics · Recursion · Dynamic Programming | 85.25% | Basic |
| 2 | Min Number of Jumps Dynamic Programming | 50.48% | Medium |
| 3 | House Robber Dynamic Programming | 51.45% | Medium |
| 4 | Min Cost Climbing Stairs Dynamic Programming | 65.21% | Easy |
| 5 | Smallest Window of All Characters String · Dynamic Programming | 50.00% | Hard |
| 6 | Ways to Reaching the n'th Stair Dynamic Programming | 50.00% | Medium |
| 7 | 0-1 Knapsack Problem Array · Dynamic Programming | 50.00% | Medium |
| 8 | Rod Cutting Array · Dynamic Programming | 50.00% | Medium |
| 9 | Stock buy and sell Array · Dynamic Programming | 29.18% | Medium |
| 10 | Distinct Paths II Array · Recursion · Dynamic Programming | 50.00% | Medium |
| 11 | Minimum Path Sum Array · Dynamic Programming · 2D Array | 50.00% | Medium |
| 12 | Distinct Paths Array · Recursion · Dynamic Programming | 50.00% | Medium |
| 13 | Longest Increasing Subsequence Array · Dynamic Programming | 20.00% | Medium |
| 14 | Longest Common Subsequence Array · String · Dynamic Programming | 50.00% | Medium |
| 15 | You and your books Array · Dynamic Programming | 50.00% | Easy |
| 16 | Maximize dot product Dynamic Programming | 13.27% | Medium |
Practice that builds the habit
Three steps, repeated every day.
- 1
Pick a pattern
Start from an idea such as two pointers or BFS, then move through easy, medium and hard.
- 2
Code and run
Write in your language, run on sample cases and submit against every hidden test.
- 3
Climb the board
Every solve earns points. Keep a daily streak and see where you stand this month.
Want a plan, not just problems?
The DSA bootcamp adds structured lessons, live mentorship and mock interviews on top of this practice platform.
