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Problems

877 problems

Has videoPremium onlyReset
Array2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

877 results

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TitleSolutionAcceptDifficultyTopics
3628. Maximum Number of Subsequences After One InsertingVideo
Solution32.4%Medium
Dynamic Programming, Greedy +2· 1 company
3662. Filter Characters by FrequencyPremium
Solution86.2%Easy
Counting, Hash Table +1· 1 company
3664. Two-Letter Card GameVideo
–13.0%Medium
Array, Counting +3· 2 companies
3666. Minimum Operations to Equalize Binary StringVideo
Solution45.2%Hard
Breadth-First Search, Math +3· 4 companies
3675. Minimum Operations to Transform StringVideo
Solution61.9%Medium
Greedy, String
3692. Majority Frequency CharactersVideo
Solution66.3%Easy
Counting, Hash Table +1
3694. Distinct Points Reachable After Substring RemovalVideo
Solution53.9%Medium
Hash Table, Prefix Sum +2
3696. Maximum Distance Between Unequal Words in Array IVideoPremium
Solution81.7%Easy
Array, String· 1 company
3703. Remove K-Balanced SubstringsVideo
Solution33.1%Medium
Simulation, Stack +1· 2 companies
3706. Maximum Distance Between Unequal Words in Array IIVideoPremium
Solution72.1%Medium
Array, String
3707. Equal Score SubstringsVideo
Solution56.7%Easy
Prefix Sum, String
3713. Longest Balanced Substring IVideo
Solution69.1%Medium
Counting, Enumeration +2· 4 companies
3714. Longest Balanced Substring IIVideo
Solution42.0%Medium
Hash Table, Prefix Sum +1· 6 companies
3720. Lexicographically Smallest Permutation Greater Than TargetVideo
Solution48.2%Medium
Counting, Enumeration +3· 2 companies
3734. Lexicographically Smallest Palindromic Permutation Greater Than TargetVideo
Solution55.3%Hard
Enumeration, String +1
3735. Lexicographically Smallest String After Reverse IIPremium
–49.0%Hard
Binary Search, Hash Function +3
3744. Find Kth Character in Expanded StringVideoPremium
Solution56.4%Medium
String
3746. Minimum String Length After Balanced RemovalsVideo
Solution77.6%Medium
Counting, Stack +1
3749. Evaluate Valid ExpressionsPremium
Solution69.2%Hard
Divide and Conquer, Hash Table +3
3750. Minimum Number of Flips to Reverse Binary StringVideo
Solution75.5%Easy
Bit Manipulation, Math +2
3756. Concatenate Non-Zero Digits and Multiply by Sum IIVideo
Solution42.7%Medium
Math, Prefix Sum +1· 3 companies
3758. Convert Number Words to DigitsVideoPremium
Solution67.7%Medium
String, Trie
3760. Maximum Substrings With Distinct StartVideo
Solution90.4%Medium
Hash Table, String
3773. Maximum Number of Equal Length RunsPremium
Solution82.8%Medium
Counting, Hash Table +1
3775. Reverse Words With Same Vowel CountVideo
Solution66.6%Medium
Simulation, String +1
3777. Minimum Deletions to Make Alternating SubstringVideo
Solution43.0%Hard
Segment Tree, String
3781. Maximum Score After Binary SwapsVideo
Solution35.0%Medium
Array, Greedy +2· 1 company
3784. Minimum Deletion Cost to Make All Characters EqualVideo
Solution55.0%Medium
Array, Enumeration +2
3794. Reverse String PrefixVideo
Solution88.5%Easy
String, Two Pointers· 1 company
3798. Largest Even NumberVideo
Solution68.5%Easy
String
3799. Word Squares IIVideo
Solution53.8%Medium
Array, Backtracking +3· 1 company
3800. Minimum Cost to Make Two Binary Strings EqualVideo
Solution38.6%Medium
Greedy, String
3803. Count Residue PrefixesVideo
Solution65.2%Easy
Hash Table, String· 2 companies
3805. Count Caesar Cipher PairsVideo
Solution50.7%Medium
Array, Counting +3· 1 company
3813. Vowel-Consonant ScoreVideo
Solution53.3%Easy
Simulation, String
3816. Lexicographically Smallest String After Deleting Duplicate CharactersVideo
Solution20.9%Hard
Greedy, Hash Table +3· 2 companies
3817. Good Indices in a Digit StringVideoPremium
Solution85.3%Medium
Math, String
3823. Reverse Letters Then Special Characters in a StringVideo
Solution81.5%Easy
Simulation, String +1
3838. Weighted Word MappingVideo
Solution90.7%Easy
Array, Simulation +1· 2 companies
3839. Number of Prefix Connected GroupsVideo
Solution59.9%Medium
Array, Counting +2
3841. Palindromic Path Queries in a TreeVideo
–34.8%Hard
Array, Divide and Conquer +3
3844. Longest Almost-Palindromic SubstringVideo
Solution22.8%Medium
Dynamic Programming, String +1
3846. Total Distance to Type a String Using One FingerVideoPremium
Solution89.9%Medium
Hash Table, String
3849. Maximum Bitwise XOR After RearrangementVideo
Solution70.4%Medium
Bit Manipulation, Greedy +1
3853. Merge Close CharactersVideo
Solution53.9%Medium
Hash Table, String· 1 company
3856. Trim Trailing VowelsVideo
Solution77.2%Easy
String
3860. Unique Email GroupsPremium
Solution84.8%Medium
Array, Hash Table +1
3863. Minimum Operations to Sort a StringVideo
Solution39.0%Medium
String· 1 company
3864. Minimum Cost to Partition a Binary StringVideo
Solution50.5%Hard
Divide and Conquer, Prefix Sum +1· 1 company
3884. First Matching Character From Both EndsVideo
Solution81.5%Easy
String, Two Pointers
Showing 801–850 of 877