Uber
336 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 2296. Design a Text Editor | Hard | 21.7% | TopicsLinked ListStringStackDesignSimulationDoubly-Linked List |
| 130. Surrounded Regions | Medium | 21.7% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 2484. Count Palindromic Subsequences | Hard | 21.7% | TopicsStringDynamic Programming |
| 3045. Count Prefix and Suffix Pairs II | Hard | 21.7% | TopicsArrayStringTrieRolling HashString MatchingHash FunctionZ Algorithm |
| Number of Distinct Substrings in a String | Medium | 21.7% | TopicsStringTrieRolling HashSuffix ArrayHash Function |
| Cache With Time Limit | Medium | 21.7% | Topics— |
| Add Strings | Easy | 21.7% | TopicsMathStringSimulation |
| Promise Pool | Medium | 21.7% | Topics— |
| 3443. Maximum Manhattan Distance After K Changes | Medium | 21.7% | TopicsHash TableMathStringCounting |
| 1293. Shortest Path in a Grid with Obstacles Elimination | Hard | 21.7% | TopicsArrayBreadth-First SearchMatrix |
| 680. Valid Palindrome II | Easy | 21.7% | TopicsTwo PointersStringGreedy |
| 1005. Maximize Sum Of Array After K Negations | Easy | 21.7% | TopicsArrayGreedySorting |
| 795. Number of Subarrays with Bounded Maximum | Medium | 21.7% | TopicsArrayTwo Pointers |
| Design Snake Game | Medium | 21.7% | TopicsArrayHash TableDesignQueueSimulation |
| 25. Reverse Nodes in k-Group | Hard | 21.7% | TopicsLinked ListRecursion |
| 3202. Find the Maximum Length of Valid Subsequence II | Medium | 21.7% | TopicsArrayDynamic Programming |
| Integer Replacement | Medium | 21.7% | TopicsDynamic ProgrammingGreedyBit ManipulationMemoization |
| 2 Keys Keyboard | Medium | 21.7% | TopicsMathDynamic Programming |
| Binary Tree Longest Consecutive Sequence II | Medium | 21.7% | TopicsTreeDepth-First SearchBinary TreeDP on Trees |
| Maximum Average Subarray I | Easy | 21.7% | TopicsArraySliding Window |
| Ones and Zeroes | Medium | 21.7% | TopicsArrayStringDynamic ProgrammingKnapsack Problem0-1 Knapsack |
| 2276. Count Integers in Intervals | Hard | 21.7% | TopicsDesignSegment TreeOrdered Set |
| Human Traffic of Stadium | Hard | 21.7% | TopicsDatabase |
| Repeated String Match | Medium | 21.7% | TopicsStringString MatchingZ AlgorithmKnuth–Morris–Pratt AlgorithmBoyer–Moore String-Search Algorithm |
| Insert Delete GetRandom O(1) - Duplicates allowed | Hard | 21.7% | TopicsArrayHash TableMathDesignRandomized |
