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Problems

942 problems

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Array566Dynamic Programming328String188Math182Binary Search133Hash Table132Sorting104Greedy102Bit Manipulation101Graph92Depth-First Search88Heap (Priority Queue)77Prefix Sum75Matrix74Breadth-First Search70All topics

Hard · With video · 942 results

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TitleSolutionAcceptDifficultyTopics
2753. Count Houses in a Circular Street IIVideoPremium
Solution61.5%Hard
–
2759. Convert JSON String to ObjectVideoPremium
Solution61.7%Hard
–· 2 companies
2763. Sum of Imbalance Numbers of All SubarraysVideo
Solution41.9%Hard
Array, Hash Table +1· 1 company
2781. Length of the Longest Valid SubstringVideo
Solution38.3%Hard
Array, Hash Table +2· 3 companies
2790. Maximum Number of Groups With Increasing LengthVideo
Solution23.0%Hard
Array, Binary Search +3· 1 company
2791. Count Paths That Can Form a Palindrome in a TreeVideo
Solution52.6%Hard
Bit Manipulation, Bitmask +3· 4 companies
2792. Count Nodes That Are Great EnoughVideoPremium
Solution57.1%Hard
Binary Tree, Depth-First Search +2
2793. Status of Flight TicketsVideoPremium
Solution80.1%Hard
–
2801. Count Stepping Numbers in RangeVideo
Solution28.7%Hard
Dynamic Programming, String· 2 companies
2809. Minimum Time to Make Array Sum At Most xVideo
Solution27.4%Hard
Array, Dynamic Programming +1· 1 company
2813. Maximum Elegance of a K-Length SubsequenceVideo
Solution29.1%Hard
Array, Greedy +4
2814. Minimum Time Takes to Reach Destination Without DrowningVideoPremium
Solution54.7%Hard
Array, Breadth-First Search +1
2818. Apply Operations to Maximize ScoreVideo
Solution53.7%Hard
Array, Greedy +4· 2 companies
2827. Number of Beautiful Integers in the RangeVideo
Solution23.1%Hard
Dynamic Programming, Math· 1 company
2835. Minimum Operations to Form Subsequence With Target SumVideo
Solution32.5%Hard
Array, Bit Manipulation +1· 1 company
2836. Maximize Value of Function in a Ball Passing GameVideo
Solution31.3%Hard
Array, Bit Manipulation +1· 1 company
2842. Count K-Subsequences of a String With Maximum BeautyVideo
Solution30.2%Hard
Combinatorics, Greedy +3· 1 company
2846. Minimum Edge Weight Equilibrium Queries in a TreeVideo
Solution46.7%Hard
Array, Graph +2· 1 company
2851. String TransformationVideo
Solution27.4%Hard
Dynamic Programming, Math +2· 3 companies
2858. Minimum Edge Reversals So Every Node Is ReachableVideo
Solution60.2%Hard
Breadth-First Search, Depth-First Search +2· 11 companies
2862. Maximum Element-Sum of a Complete Subset of IndicesVideo
Solution42.9%Hard
Array, Math +1· 1 company
2867. Count Valid Paths in a TreeVideo
Solution36.2%Hard
Depth-First Search, Dynamic Programming +3· 1 company
2872. Maximum Number of K-Divisible ComponentsVideo
Solution74.1%Hard
Depth-First Search, Tree· 4 companies
2876. Count Visited Nodes in a Directed GraphVideo
Solution31.6%Hard
Dynamic Programming, Graph +1· 1 company
2897. Apply Operations on Array to Maximize Sum of SquaresVideo
Solution73.9%Hard
Array, Bit Manipulation +2· 1 company
2902. Count of Sub-Multisets With Bounded SumVideo
Solution22.3%Hard
Array, Dynamic Programming +2
2911. Minimum Changes to Make K Semi-palindromesVideo
Solution35.3%Hard
Dynamic Programming, String +1
2916. Subarrays Distinct Element Sum of Squares IIVideo
Solution54.8%Hard
Array, Binary Indexed Tree +2· 1 company
2920. Maximum Points After Collecting Coins From All NodesVideo
Solution36.6%Hard
Array, Bit Manipulation +3· 1 company
2921. Maximum Profitable Triplets With Increasing Prices IIVideoPremium
Solution46.6%Hard
Array, Binary Indexed Tree +1· 1 company
2926. Maximum Balanced Subsequence SumVideo
Solution25.8%Hard
Array, Binary Indexed Tree +3· 1 company
2927. Distribute Candies Among Children IIIVideoPremium
Solution57.3%Hard
Combinatorics, Math· 2 companies
2931. Maximum Spending After Buying ItemsVideo
Solution60.5%Hard
Array, Greedy +3· 2 companies
2935. Maximum Strong Pair XOR IIVideo
Solution32.9%Hard
Array, Bit Manipulation +3· 1 company
2940. Find Building Where Alice and Bob Can MeetVideo
Solution52.3%Hard
Array, Binary Indexed Tree +5· 5 companies
2941. Maximum GCD-Sum of a SubarrayVideoPremium
Solution39.9%Hard
Array, Binary Search +2· 1 company
2945. Find Maximum Non-decreasing Array LengthVideo
Solution19.2%Hard
Array, Binary Search +5· 4 companies
2949. Count Beautiful Substrings IIVideo
Solution27.5%Hard
Hash Table, Math +3· 1 company
2953. Count Complete SubstringsVideo
Solution31.3%Hard
Hash Table, Sliding Window +1· 1 company
2954. Count the Number of Infection SequencesVideo
Solution36.7%Hard
Array, Combinatorics +1· 6 companies
2959. Number of Possible Sets of Closing BranchesVideo
Solution51.2%Hard
Bit Manipulation, Enumeration +3· 3 companies
2963. Count the Number of Good PartitionsVideo
Solution49.3%Hard
Array, Combinatorics +2· 1 company
2968. Apply Operations to Maximize Frequency ScoreVideo
Solution39.3%Hard
Array, Binary Search +3· 3 companies
2969. Minimum Number of Coins for Fruits IIVideoPremium
Solution49.2%Hard
Array, Dynamic Programming +3
2972. Count the Number of Incremovable Subarrays IIVideo
Solution39.8%Hard
Array, Binary Search +1· 3 companies
2973. Find Number of Coins to Place in Tree NodesVideo
Solution37.4%Hard
Depth-First Search, Dynamic Programming +3· 1 company
2977. Minimum Cost to Convert String IIVideo
Solution59.1%Hard
Array, Dynamic Programming +4· 4 companies
2983. Palindrome Rearrangement QueriesVideo
Solution24.4%Hard
Hash Table, Prefix Sum +1
2991. Top Three Wineries VideoPremium
Solution54.0%Hard
Database· 1 company
2994. Friday Purchases II VideoPremium
Solution73.8%Hard
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