DE Shaw
107 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| 91. Decode Ways | Medium | 37.9% | TopicsStringDynamic Programming |
| Text Justification | Hard | 37.9% | TopicsArrayStringSimulation |
| 1434. Number of Ways to Wear Different Hats to Each Other | Hard | 37.9% | TopicsArrayDynamic ProgrammingBit ManipulationBitmaskBipartite GraphMatching (Graph)Perfect Matching |
| Wildcard Matching | Hard | 37.9% | TopicsStringDynamic ProgrammingGreedyRecursion |
| 2222. Number of Ways to Select Buildings | Medium | 37.9% | TopicsStringDynamic ProgrammingPrefix Sum |
| 962. Maximum Width Ramp | Medium | 37.9% | TopicsArrayTwo PointersStackMonotonic Stack |
| 851. Loud and Rich | Medium | 37.9% | TopicsArrayDepth-First SearchGraph TheoryTopological SortDirected Acyclic Graph |
| 1. Two Sum | Easy | 37.9% | TopicsArrayHash Table |
| 88. Merge Sorted Array | Easy | 37.9% | TopicsArrayTwo PointersSorting |
| Remove Duplicate Letters | Medium | 37.9% | TopicsStringStackGreedyMonotonic Stack |
| 213. House Robber II | Medium | 37.9% | TopicsArrayDynamic Programming |
| Recover Binary Search Tree | Medium | 37.9% | TopicsTreeDepth-First SearchBinary Search TreeBinary Tree |
| 242. Valid Anagram | Easy | 37.9% | TopicsHash TableStringSorting |
| 881. Boats to Save People | Medium | 37.9% | TopicsArrayTwo PointersGreedySortingTimsort |
| 863. All Nodes Distance K in Binary Tree | Medium | 37.9% | TopicsHash TableTreeDepth-First SearchBreadth-First SearchBinary Tree |
| 322. Coin Change | Medium | 37.9% | TopicsArrayDynamic ProgrammingBreadth-First SearchKnapsack ProblemComplete Knapsack |
| 131. Palindrome Partitioning | Medium | 37.9% | TopicsStringDynamic ProgrammingBacktracking |
| 1293. Shortest Path in a Grid with Obstacles Elimination | Hard | 37.9% | TopicsArrayBreadth-First SearchMatrix |
| 1898. Maximum Number of Removable Characters | Medium | 37.9% | TopicsArrayTwo PointersStringBinary Search |
| 1004. Max Consecutive Ones III | Medium | 37.9% | TopicsArrayBinary SearchSliding WindowPrefix Sum |
| 215. Kth Largest Element in an Array | Medium | 37.9% | TopicsArrayDivide and ConquerSortingHeap (Priority Queue)Quickselect |
| 3316. Find Maximum Removals From Source String | Medium | 37.9% | TopicsArrayHash TableTwo PointersStringDynamic Programming |
| 543. Diameter of Binary Tree | Easy | 37.9% | TopicsTreeDepth-First SearchBinary TreeDP on Trees |
| Predict the Winner | Medium | 37.9% | TopicsArrayMathDynamic ProgrammingRecursionMinimaxGame TheoryZero-Sum Game |
| Find K Closest Elements | Medium | 37.9% | TopicsArrayTwo PointersBinary SearchSliding WindowSortingHeap (Priority Queue) |
