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Problems

203 problems

Has videoPremium onlyReset
CountingArray2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

203 results

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TitleSolutionAcceptDifficultyTopics
3335. Total Characters in String After Transformations IVideo
Solution45.7%Medium
Counting, Dynamic Programming +3· 4 companies
3337. Total Characters in String After Transformations IIVideo
Solution58.0%Hard
Counting, Dynamic Programming +3· 2 companies
3371. Identify the Largest Outlier in an ArrayVideo
Solution36.2%Medium
Array, Counting +2· 4 companies
3389. Minimum Operations to Make Character Frequencies EqualVideo
–25.8%Hard
Counting, Dynamic Programming +3· 2 companies
3438. Find Valid Pair of Adjacent Digits in StringVideo
Solution60.7%Easy
Counting, Hash Table +1· 3 companies
3442. Maximum Difference Between Even and Odd Frequency IVideo
Solution60.7%Easy
Counting, Hash Table +1· 4 companies
3443. Maximum Manhattan Distance After K ChangesVideo
Solution54.2%Medium
Counting, Hash Table +2· 4 companies
3467. Transform Array by ParityVideo
Solution89.7%Easy
Array, Counting +1· 1 company
3518. Smallest Palindromic Rearrangement IIVideo
Solution44.3%Hard
Combinatorics, Counting +3
3527. Find the Most Common ResponseVideo
Solution74.0%Medium
Array, Counting +2· 1 company
3541. Find Most Frequent Vowel and ConsonantVideo
Solution89.4%Easy
Counting, Hash Table +1· 3 companies
3545. Minimum Deletions for At Most K Distinct CharactersVideo
Solution72.2%Easy
Counting, Greedy +3· 2 companies
3581. Count Odd Letters from NumberVideoPremium
Solution85.1%Easy
Counting, Hash Table +2
3583. Count Special TripletsVideo
Solution47.1%Medium
Array, Counting +1· 3 companies
3591. Check if Any Element Has Prime FrequencyVideo
Solution62.6%Easy
Array, Counting +3
3636. Threshold Majority QueriesVideo
–22.5%Hard
Array, Binary Search +4· 4 companies
3659. Partition Array Into K-Distinct GroupsVideo
Solution47.1%Medium
Array, Counting +1· 1 company
3662. Filter Characters by FrequencyPremium
Solution86.2%Easy
Counting, Hash Table +1· 1 company
3663. Find The Least Frequent DigitVideo
Solution68.8%Easy
Array, Counting +2· 1 company
3664. Two-Letter Card GameVideo
–13.0%Medium
Array, Counting +3· 2 companies
3672. Sum of Weighted Modes in SubarraysPremium
Solution54.3%Medium
Array, Counting +3
3679. Minimum Discards to Balance InventoryVideo
Solution35.5%Medium
Array, Counting +3
3692. Majority Frequency CharactersVideo
Solution66.3%Easy
Counting, Hash Table +1
3712. Sum of Elements With Frequency Divisible by KVideo
Solution77.7%Easy
Array, Counting +1
3713. Longest Balanced Substring IVideo
Solution69.1%Medium
Counting, Enumeration +2· 4 companies
3715. Sum of Perfect Square AncestorsVideo
–41.3%Hard
Array, Counting +5· 3 companies
3720. Lexicographically Smallest Permutation Greater Than TargetVideo
Solution48.2%Medium
Counting, Enumeration +3· 2 companies
3737. Count Subarrays With Majority Element IVideo
Solution75.7%Medium
Array, Counting +5· 5 companies
3746. Minimum String Length After Balanced RemovalsVideo
Solution77.6%Medium
Counting, Stack +1
3773. Maximum Number of Equal Length RunsPremium
Solution82.8%Medium
Counting, Hash Table +1
3785. Minimum Swaps to Avoid Forbidden ValuesVideo
–30.4%Hard
Array, Counting +2· 1 company
3805. Count Caesar Cipher PairsVideo
Solution50.7%Medium
Array, Counting +3· 1 company
3837. Delayed Count of Equal ElementsPremium
Solution77.7%Medium
Array, Counting +1· 1 company
3839. Number of Prefix Connected GroupsVideo
Solution59.9%Medium
Array, Counting +2
3843. First Element with Unique FrequencyVideo
Solution69.9%Medium
Array, Counting +1
3848. Check Digitorial PermutationVideo
Solution46.4%Medium
Counting, Math· 1 company
3852. Smallest Pair With Different FrequenciesVideo
Solution68.5%Easy
Array, Counting +1· 1 company
3859. Count Subarrays With K Distinct IntegersVideo
Solution21.0%Hard
Array, Counting +2
3866. First Unique Even ElementVideo
Solution65.6%Easy
Array, Counting +1
3868. Minimum Cost to Equalize Arrays Using SwapsVideo
Solution48.7%Medium
Array, Counting +2· 2 companies
3889. Mirror Frequency DistanceVideo
Solution60.7%Medium
Counting, Hash Table +1
3890. Integers With Multiple Sum of Two CubesVideo
Solution54.9%Medium
Counting, Enumeration +2
3913. Sort Vowels by FrequencyVideo
Solution61.5%Medium
Counting, Sorting +1
3926. Count Valid Word OccurrencesVideo
Solution48.1%Medium
Array, Counting +2
3943. Number of Pairs After IncrementVideo
–20.9%Hard
Array, Counting +2
3960. Frequency Balance SubarrayVideo
Solution29.5%Medium
Array, Counting +1· 1 company
3968. Maximum Manhattan Distance After All MovesVideo
Solution63.3%Medium
Counting, Math +1
3978. Unique Middle ElementVideo
Solution72.3%Easy
Array, Counting
4006. Count Valid PrefixesVideo
Solution78.0%Easy
Counting, String
4007. Widest Possible FenceVideo
Solution16.9%Hard
Array, Counting +2
Showing 151–200 of 203