Expedia
68 problems
| Problem | Difficulty | Frequency ↓ | Topics |
|---|---|---|---|
| Count and Say | Medium | 72.7% | TopicsString |
| 20. Valid Parentheses | Easy | 64.9% | TopicsStringStackBracket Sequences |
| 121. Best Time to Buy and Sell Stock | Easy | 64.9% | TopicsArrayDynamic Programming |
| 198. House Robber | Medium | 64.9% | TopicsArrayDynamic Programming |
| 200. Number of Islands | Medium | 64.9% | TopicsArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix |
| 146. LRU Cache | Medium | 64.9% | TopicsHash TableLinked ListDesignDoubly-Linked List |
| 3168. Minimum Number of Chairs in a Waiting Room | Easy | 64.9% | TopicsStringSimulation |
| 926. Flip String to Monotone Increasing | Medium | 64.9% | TopicsStringDynamic Programming |
| 1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts | Medium | 64.9% | TopicsArrayGreedySorting |
| 875. Koko Eating Bananas | Medium | 64.9% | TopicsArrayBinary Search |
| 2866. Beautiful Towers II | Medium | 64.9% | TopicsArrayStackMonotonic Stack |
| 3. Longest Substring Without Repeating Characters | Medium | 54.1% | TopicsHash TableStringSliding Window |
| 1963. Minimum Number of Swaps to Make the String Balanced | Medium | 54.1% | TopicsTwo PointersStringStackGreedyBracket Sequences |
| 13. Roman to Integer | Easy | 54.1% | TopicsHash TableMathString |
| 28. Find the Index of the First Occurrence in a String | Easy | 54.1% | TopicsTwo PointersStringString MatchingZ AlgorithmKnuth–Morris–Pratt AlgorithmBoyer–Moore String-Search Algorithm |
| Degree of an Array | Easy | 54.1% | TopicsArrayHash Table |
| 994. Rotting Oranges | Medium | 54.1% | TopicsArrayBreadth-First SearchMatrix |
| 11. Container With Most Water | Medium | 54.1% | TopicsArrayTwo PointersGreedy |
| 22. Generate Parentheses | Medium | 54.1% | TopicsStringDynamic ProgrammingBacktrackingBracket Sequences |
| Verify Preorder Sequence in Binary Search Tree | Medium | 54.1% | TopicsArrayStackTreeBinary Search TreeRecursionMonotonic StackBinary Tree |
| 230. Kth Smallest Element in a BST | Medium | 54.1% | TopicsTreeDepth-First SearchBinary Search TreeBinary Tree |
| 127. Word Ladder | Hard | 54.1% | TopicsHash TableStringBreadth-First SearchBidirectional Search |
| 767. Reorganize String | Medium | 54.1% | TopicsHash TableStringGreedySortingHeap (Priority Queue)Counting |
| 787. Cheapest Flights Within K Stops | Medium | 54.1% | TopicsDynamic ProgrammingDepth-First SearchBreadth-First SearchGraph TheoryHeap (Priority Queue)Shortest Path |
| 1413. Minimum Value to Get Positive Step by Step Sum | Easy | 54.1% | TopicsArrayPrefix Sum |
