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Hackathon coding challenges

Practise hackathon with 5 coding challenges, from easy to hard. Every challenge runs in your browser with instant tests, an AI review of your code and community solutions to compare.

Medium · 2 Hard · 3

Skills you'll practise: 4-neighbor checksCycle detectionDAG DPEdge countingGrid simulationKahn's algorithmNeighbor countingPrefix DPString segmentationTopological order
  • Python · C++ · C#
  • Automated tests
  • AI code review
  • Community solutions
Programming
Programming fundamentalsFrom variables to recursion, for beginners
AI and machine learning
AI Learning HubNeural networks, ML and LLMs from scratch Neural networks from scratchNeurons, backpropagation and optimizers Machine learning from scratchRegression, classification and clustering Transformers and LLMs from scratchTokenizers, attention and text generation Classical AI and reinforcement learningSearch, games and reinforcement learning
226
Challenges
2
Solutions shared
3
Languages

All challenges

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5 challenges
Medium

Game of Life Step

Advance Conway's Game of Life by one generation.

You'll learn Grid simulationNeighbor counting
AdvancedGridsHackathonSimulation
Python C++ C#
0 solved
No solutions yet
Hard

Longest Path in a DAG

Find the heaviest path in a task dependency graph.

You'll learn Topological orderDAG DP
AdvancedGraphsHackathonTopological-sort
Python C++ C#
0 solved
No solutions yet
Hard

Word Break

Decide whether text can be split into dictionary words.

You'll learn Prefix DPString segmentation
AdvancedDynamic-programmingHackathonStrings
Python C++ C#
0 solved
No solutions yet
Hard

Course Schedule Order

Order courses so every prerequisite comes first.

You'll learn Kahn's algorithmCycle detection
AdvancedGraphsHackathonTopological-sort
Python C++ C#
0 solved
No solutions yet
Medium

Island Perimeter

Measure the coastline of land cells in a grid.

You'll learn Edge counting4-neighbor checks
AdvancedGridsHackathon
Python C++ C#
0 solved
No solutions yet

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