Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1415 | The k-th Lexicographical String of All Happy Strings of Length n | Medium | StringBacktracking |
| 1416 | Restore The Array | Hard | StringDynamic Programming |
| 1417 | Reformat The String | Easy | String |
| 1418 | Display Table of Food Orders in a Restaurant | Medium | ArrayHash TableString |
| 1419 | Minimum Number of Frogs Croaking | Medium | StringCounting |
| 1420 | Build Array Where You Can Find The Maximum Exactly K Comparisons | Hard | Dynamic ProgrammingPrefix Sum |
| 1421 | Diagonal Traverse II | Medium | ArraySortingHeap (Priority Queue) |
| 1421 | NPV Queries | Easy | Database |
| 1422 | Maximum Score After Splitting a String | Easy | StringPrefix Sum |
| 1423 | Maximum Points You Can Obtain from Cards | Medium | ArraySliding WindowPrefix Sum |
| 1425 | Constrained Subsequence Sum | Hard | ArrayDynamic ProgrammingQueue |
| 1426 | Counting Elements | Easy | ArrayHash Table |
| 1427 | Perform String Shifts | Easy | ArrayMathString |
| 1428 | Leftmost Column with at Least a One | Medium | ArrayBinary SearchMatrix |
| 1429 | First Unique Number | Medium | ArrayHash TableDesign |
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