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Problems

797 problems

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

797 results

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TitleSolutionAcceptDifficultyTopics
3389. Minimum Operations to Make Character Frequencies EqualVideo
–25.8%Hard
Counting, Dynamic Programming +3· 2 companies
3391. Design a 3D Binary Matrix with Efficient Layer TrackingVideoPremium
Solution66.1%Medium
Array, Design +4· 1 company
3395. Subsequences with a Unique Middle Mode IVideo
–20.7%Hard
Array, Combinatorics +2
3396. Minimum Number of Operations to Make Elements in Array DistinctVideo
Solution71.3%Easy
Array, Hash Table· 5 companies
3404. Count Special SubsequencesVideo
Solution29.9%Medium
Array, Enumeration +2· 1 company
3408. Design Task ManagerVideo
Solution49.1%Medium
Design, Hash Table +2· 5 companies
3412. Find Mirror Score of a StringVideo
Solution36.1%Medium
Hash Table, Simulation +2· 3 companies
3416. Subsequences with a Unique Middle Mode IIPremium
–16.3%Hard
Array, Combinatorics +2
3422. Minimum Operations to Make Subarray Elements EqualPremium
Solution46.8%Medium
Array, Hash Table +3
3425. Longest Special PathVideo
–23.2%Hard
Array, Depth-First Search +3
3431. Minimum Unlocked Indices to Sort NumsPremium
Solution57.6%Medium
Array, Hash Table
3434. Maximum Frequency After Subarray OperationVideo
–31.6%Medium
Array, Dynamic Programming +4· 4 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
3447. Assign Elements to Groups with ConstraintsVideo
Solution27.4%Medium
Array, Hash Table· 1 company
3450. Maximum Students on a Single BenchVideoPremium
Solution87.8%Easy
Array, Hash Table
3458. Select K Disjoint Special SubstringsVideo
–19.2%Medium
Dynamic Programming, Greedy +3· 1 company
3471. Find the Largest Almost Missing IntegerVideo
Solution49.4%Easy
Array, Hash Table· 2 companies
3481. Apply SubstitutionsVideoPremium
Solution78.0%Medium
Array, Breadth-First Search +5· 1 company
3483. Unique 3-Digit Even NumbersVideo
Solution79.8%Easy
Array, Enumeration +2· 3 companies
3484. Design SpreadsheetVideo
Solution73.5%Medium
Array, Design +3· 7 companies
3486. Longest Special Path IIVideo
–19.8%Hard
Array, Depth-First Search +3· 1 company
3487. Maximum Unique Subarray Sum After DeletionVideo
Solution40.5%Easy
Array, Greedy +1· 5 companies
3488. Closest Equal Element QueriesVideo
Solution51.4%Medium
Array, Binary Search +1· 4 companies
3493. Properties GraphVideo
Solution48.6%Medium
Array, Breadth-First Search +4· 1 company
3505. Minimum Operations to Make Elements Within K Subarrays EqualVideo
–27.8%Hard
Array, Dynamic Programming +4
3507. Minimum Pair Removal to Sort Array IVideo
Solution65.3%Easy
Array, Doubly-Linked List +5· 5 companies
3508. Implement RouterVideo
Solution39.1%Medium
Array, Binary Search +4· 4 companies
3509. Maximum Product of Subsequences With an Alternating Sum Equal to KVideo
–13.7%Hard
Array, Dynamic Programming +1· 1 company
3510. Minimum Pair Removal to Sort Array IIVideo
Solution39.1%Hard
Array, Doubly-Linked List +5· 3 companies
3518. Smallest Palindromic Rearrangement IIVideo
Solution44.3%Hard
Combinatorics, Counting +3
3522. Calculate Score After Performing InstructionsVideo
Solution57.0%Medium
Array, Hash Table +2· 1 company
3527. Find the Most Common ResponseVideo
Solution74.0%Medium
Array, Counting +2· 1 company
3531. Count Covered BuildingsVideo
Solution58.8%Medium
Array, Hash Table +1· 2 companies
3532. Path Existence Queries in a Graph IVideo
Solution70.6%Medium
Array, Binary Search +3· 5 companies
3541. Find Most Frequent Vowel and ConsonantVideo
Solution89.4%Easy
Counting, Hash Table +1· 3 companies
3542. Minimum Operations to Convert All Elements to ZeroVideo
Solution53.0%Medium
Array, Greedy +3· 4 companies
3543. Maximum Weighted K-Edge PathVideo
–20.5%Medium
Dynamic Programming, Graph +1
3545. Minimum Deletions for At Most K Distinct CharactersVideo
Solution72.2%Easy
Counting, Greedy +3· 2 companies
3548. Equal Sum Grid Partition IIVideo
Solution39.5%Hard
Array, Enumeration +3· 2 companies
3551. Minimum Swaps to Sort by Digit SumVideo
Solution67.2%Medium
Array, Hash Table +1· 1 company
3552. Grid Teleportation TraversalVideo
Solution24.0%Medium
Array, Breadth-First Search +2· 3 companies
3556. Sum of Largest Prime SubstringsVideo
Solution37.9%Medium
Hash Table, Math +3· 1 company
3557. Find Maximum Number of Non Intersecting SubstringsVideo
–31.1%Medium
Dynamic Programming, Greedy +2· 1 company
3568. Minimum Moves to Clean the ClassroomVideo
Solution58.7%Medium
Array, Bit Manipulation +3· 1 company
3572. Maximize Y‑Sum by Picking a Triplet of Distinct X‑ValuesVideo
Solution62.7%Medium
Array, Greedy +3· 1 company
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
3588. Find Maximum Area of a TriangleVideo
Solution29.8%Medium
Array, Enumeration +4· 2 companies
Showing 651–700 of 797