Practice problems across 75+ categories
Practice coding problems across all companies and topics • 3600 problems | 879 Easy | 1856 Medium | 842 Hard
| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 1366 | Rank Teams by Votes | Medium | ArrayHash TableString |
| 1367 | Linked List in Binary Tree | Medium | Linked ListTreeDepth-First Search |
| 1369 | Get the Second Most Recent Activity | Hard | Database |
| 1370 | Increasing Decreasing String | Easy | Hash TableStringCounting |
| 1371 | Find the Longest Substring Containing Vowels in Even Counts | Medium | Hash TableStringBit Manipulation |
| 1372 | Longest ZigZag Path in a Binary Tree | Medium | Dynamic ProgrammingTreeDepth-First Search |
| 1373 | Maximum Sum BST in Binary Tree | Hard | Dynamic ProgrammingTreeDepth-First Search |
| 1374 | Generate a String With Characters That Have Odd Counts | Easy | String |
| 1375 | Number of Times Binary String Is Prefix-Aligned | Medium | Array |
| 1376 | Time Needed to Inform All Employees | Medium | TreeDepth-First SearchBreadth-First Search |
| 1377 | Frog Position After T Seconds | Hard | TreeDepth-First SearchBreadth-First Search |
| 1378 | Replace Employee ID With The Unique Identifier | Easy | Database |
| 1379 | Find a Corresponding Node of a Binary Tree in a Clone of That Tree | Easy | TreeDepth-First SearchBreadth-First Search |
| 1380 | Lucky Numbers in a Matrix | Easy | ArrayMatrix |
| 1381 | Design a Stack With Increment Operation | Medium | ArrayStackDesign |
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