Practice problems across 75+ categories
Practice problems frequently asked at Google • 3407 problems | 851 Easy | 1775 Medium | 761 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 2416 | Number of Music Playlists | Hard | MathDynamic ProgrammingCombinatorics |
| 2417 | Number of Nodes in the Sub-Tree With the Same Label | Medium | Hash TableTreeDepth-First Search |
| 2418 | Number of Nodes With Value One | Medium | ArrayTreeDepth-First Search |
| 2419 | Number of Operations to Make Network Connected | Medium | Depth-First SearchBreadth-First SearchUnion Find |
| 2420 | Number of Pairs of Interchangeable Rectangles | Medium | ArrayHash TableMath |
| 2421 | Number of Pairs of Strings With Concatenation Equal to Target | Medium | ArrayHash TableString |
| 2422 | Number of Pairs Satisfying Inequality | Hard | ArrayBinary SearchDivide and Conquer |
| 2423 | Number of Paths with Max Score | Hard | ArrayDynamic ProgrammingMatrix |
| 2424 | Number of People Aware of a Secret | Medium | Dynamic ProgrammingQueueSimulation |
| 2425 | Number of People That Can Be Seen in a Grid | Medium | ArrayStackMatrix |
| 2426 | Number of Possible Sets of Closing Branches | Hard | Bit ManipulationGraphHeap (Priority Queue) |
| 2427 | Number of Provinces | Unknown | Depth-First SearchBreadth-First SearchUnion Find |
| 2428 | Number of Recent Calls | Easy | DesignQueueData Stream |
| 2429 | Number Of Rectangles That Can Form The Largest Square | Easy | Array |
| 2430 | Number of Restricted Paths From First to Last Node | Medium | Dynamic ProgrammingGraphTopological Sort |
Powerful online tools to boost your productivity
Coding Ground For Developers
Code, Edit, Run and ShareIgnite your coding potential on Coding Ground - an immersive online platform for hands-on learning, collaboration, and skill development.
