Matrix problems
13 problems, easiest first. Solve in JavaScript or Python.
- Coastline Length of the Landmatrixeasy
- Constant Diagonals Gridmatrixeasy
- Rotate a Matrix Clockwisematrix · arrayseasy
- Cell Colony Next Generationmatrix · simulationmedium
- Count Islands on a Mapgraph · dfs · bfsmedium
- Minutes Until the Rack Is Infectedbfs · matrixmedium
- Robot Paths Around Blocked Tilesdynamic-programming · matrixmedium
- Spiral Walk of a Gridmatrix · simulationmedium
- Trace a Word on a Letter Boardbacktracking · matrix · dfsmedium
- Escape the Rising Floodshortest-path · heap · matrixhard
- Find Every Dictionary Word on the Boardtrie · backtracking · matrixhard
- Rainwater on a Terrain Mapheap · bfs · matrixhard
- Solve a Sudoku Gridbacktracking · matrixhard
Other topics
Strings 29Arrays 29Hash Map 29Math 22Sorting 19Simulation 16Dynamic Programming 16Greedy 15Two Pointers 13Sliding Window 13Graph 13Heap 12Binary Search 11Parsing 11DevOps 10Tree 10Stack 9Linked List 9Bit Manipulation 9Bfs 9Fintech 8Frontend 8Dfs 7Prefix Sum 6Counting 6Machine Learning 6Data Processing 6Recursion 6Backtracking 6Statistics 5Intervals 5Queue 5Union Find 4Dates 4Divide And Conquer 4Topological Sort 4Stacks 3Geometry 3Binary Search Tree 3Shortest Path 3Trie 3