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136 problems

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Array578Dynamic Programming332String191Math187Binary Search136Hash Table134Sorting106Greedy104Bit Manipulation103Graph96Depth-First Search91Heap (Priority Queue)78Prefix Sum77Matrix75Breadth-First Search71All topics

Hard · 136 results

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TitleSolutionAcceptDifficultyTopics
4. Median of Two Sorted ArraysVideo
Solution47.9%Hard
Array, Binary Search +1· 45 companies
154. Find Minimum in Rotated Sorted Array IIVideo
Solution47.2%Hard
Array, Binary Search· 5 companies
302. Smallest Rectangle Enclosing Black PixelsVideoPremium
Solution60.9%Hard
Array, Binary Search +3· 1 company
315. Count of Smaller Numbers After SelfVideo
Solution44.0%Hard
Array, Binary Indexed Tree +5· 6 companies
327. Count of Range SumVideo
Solution40.3%Hard
Array, Binary Indexed Tree +5· 5 companies
352. Data Stream as Disjoint IntervalsVideo
Solution60.8%Hard
Binary Search, Design +1· 2 companies
354. Russian Doll EnvelopesVideo
Solution37.8%Hard
Array, Binary Search +2· 13 companies
363. Max Sum of Rectangle No Larger Than KVideo
Solution46.0%Hard
Array, Binary Search +3· 3 companies
410. Split Array Largest SumVideo
Solution61.2%Hard
Array, Binary Search +3· 20 companies
483. Smallest Good BaseVideo
Solution47.6%Hard
Binary Search, Math· 3 companies
493. Reverse PairsVideo
Solution35.1%Hard
Array, Binary Indexed Tree +5· 9 companies
644. Maximum Average Subarray IIVideoPremium
Solution37.7%Hard
Array, Binary Search +1· 1 company
668. Kth Smallest Number in Multiplication TableVideo
Solution55.1%Hard
Binary Search, Math· 5 companies
710. Random Pick with BlacklistVideo
Solution35.4%Hard
Array, Binary Search +4· 3 companies
719. Find K-th Smallest Pair DistanceVideo
Solution46.4%Hard
Array, Binary Search +2· 5 companies
732. My Calendar IIIVideo
Solution72.4%Hard
Binary Search, Design +3· 1 company
774. Minimize Max Distance to Gas StationVideoPremium
Solution53.9%Hard
Array, Binary Search· 2 companies
778. Swim in Rising WaterVideo
Solution68.3%Hard
Array, Binary Search +5· 8 companies
793. Preimage Size of Factorial Zeroes FunctionVideo
Solution48.0%Hard
Binary Search, Math· 1 company
862. Shortest Subarray with Sum at Least KVideo
Solution33.3%Hard
Array, Binary Search +5· 7 companies
878. Nth Magical NumberVideo
Solution37.1%Hard
Binary Search, Math· 3 companies
887. Super Egg DropVideo
Solution30.6%Hard
Binary Search, Dynamic Programming +1· 5 companies
902. Numbers At Most N Given Digit SetVideo
Solution45.9%Hard
Array, Binary Search +3· 4 companies
1044. Longest Duplicate SubstringVideo
Solution31.1%Hard
Binary Search, Hash Function +4· 7 companies
1095. Find in Mountain ArrayVideo
Solution41.9%Hard
Array, Binary Search +1· 6 companies
1157. Online Majority Element In SubarrayVideo
Solution40.9%Hard
Array, Binary Indexed Tree +3· 1 company
1187. Make Array Strictly IncreasingVideo
Solution58.0%Hard
Array, Binary Search +2
1231. Divide ChocolateVideoPremium
Solution60.5%Hard
Array, Binary Search· 1 company
1235. Maximum Profit in Job SchedulingVideo
Solution54.8%Hard
Array, Binary Search +2· 22 companies
1439. Find the Kth Smallest Sum of a Matrix With Sorted RowsVideo
Solution62.6%Hard
Array, Binary Search +2· 2 companies
1483. Kth Ancestor of a Tree NodeVideo
Solution39.7%Hard
Binary Search, Breadth-First Search +4· 3 companies
1521. Find a Value of a Mysterious Function Closest to TargetVideo
Solution48.3%Hard
Array, Binary Search +2· 1 company
1649. Create Sorted Array through InstructionsVideo
Solution42.7%Hard
Array, Binary Indexed Tree +5· 2 companies
1671. Minimum Number of Removals to Make Mountain ArrayVideo
Solution55.0%Hard
Array, Binary Search +2· 6 companies
1713. Minimum Operations to Make a SubsequenceVideo
Solution50.3%Hard
Array, Binary Search +2· 2 companies
1739. Building BoxesVideo
Solution52.5%Hard
Binary Search, Greedy +1
1751. Maximum Number of Events That Can Be Attended IIVideo
Solution63.6%Hard
Array, Binary Search +2· 8 companies
1782. Count Pairs Of NodesVideo
Solution43.3%Hard
Array, Binary Search +3· 1 company
1793. Maximum Score of a Good SubarrayVideo
Solution64.3%Hard
Array, Binary Search +3· 2 companies
1847. Closest RoomVideo
Solution41.9%Hard
Array, Binary Search +2· 1 company
1851. Minimum Interval to Include Each QueryVideo
Solution55.4%Hard
Array, Binary Search +3· 3 companies
1862. Sum of Floored PairsVideo
Solution31.4%Hard
Array, Binary Search +2
1889. Minimum Space Wasted From PackagingVideo
Solution33.6%Hard
Array, Binary Search +2· 3 companies
1923. Longest Common SubpathVideo
Solution30.7%Hard
Array, Binary Search +3· 1 company
1932. Merge BSTs to Create Single BSTVideo
Solution40.3%Hard
Binary Search, Binary Tree +3· 3 companies
1956. Minimum Time For K Virus Variants to SpreadVideoPremium
–49.5%Hard
Array, Binary Search +3
1964. Find the Longest Valid Obstacle Course at Each PositionVideo
Solution62.8%Hard
Array, Binary Indexed Tree +1· 1 company
1970. Last Day Where You Can Still CrossVideo
Solution68.7%Hard
Array, Binary Search +4· 4 companies
2009. Minimum Number of Operations to Make Array ContinuousVideo
Solution52.0%Hard
Array, Binary Search +2· 5 companies
2035. Partition Array Into Two Arrays to Minimize Sum DifferenceVideo
Solution24.4%Hard
Array, Binary Search +5· 9 companies
Showing 1–50 of 136