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Array566 Dynamic Programming328 String188 Math182 Binary Search133 Hash Table132 Sorting104 Greedy102 Bit Manipulation101 Graph92 Depth-First Search88 Heap (Priority Queue)77 Prefix Sum75 Matrix74 Breadth-First Search70 All topics

Hard · With video · 942 results

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TitleSolutionAcceptDifficultyTopics

3348. Smallest Divisible Digit Product IIVideo

Solution45.3%Hard

Backtracking, Greedy +3· 3 companies

3351. Sum of Good SubsequencesVideo

Solution30.9%Hard

Array, Dynamic Programming +1· 1 company

3352. Count K-Reducible Numbers Less Than NVideo

Solution27.8%Hard

Combinatorics, Dynamic Programming +2· 1 company

3357. Minimize the Maximum Adjacent Element DifferenceVideo

Solution20.2%Hard

Array, Binary Search +1· 1 company

3363. Find the Maximum Number of Fruits CollectedVideo

Solution65.1%Hard

Array, Dynamic Programming +1· 2 companies

3367. Maximize Sum of Weights after Edge RemovalsVideo

Solution33.1%Hard

Depth-First Search, Dynamic Programming +2· 1 company

3368. First Letter CapitalizationVideoPremium

Solution86.8%Hard

3369. Design an Array Statistics Tracker VideoPremium

Solution35.7%Hard

Binary Search, Hash Table +1· 1 company

3373. Maximize the Number of Target Nodes After Connecting Trees IIVideo

Solution72.5%Hard

Breadth-First Search, Depth-First Search +1· 2 companies

3374. First Letter Capitalization IIVideo

Solution32.2%Hard

3378. Count Connected Components in LCM GraphVideo

Solution31.3%Hard

Array, Hash Table +3

3382. Maximum Area Rectangle With Point Constraints IIVideo

–24.0%Hard

Array, Binary Indexed Tree +4· 2 companies

3389. Minimum Operations to Make Character Frequencies EqualVideo

–25.8%Hard

Counting, Dynamic Programming +3· 2 companies

3395. Subsequences with a Unique Middle Mode IVideo

–20.7%Hard

Array, Combinatorics +2

3398. Smallest Substring With Identical Characters IVideo

Solution21.0%Hard

Array, Binary Search +1· 2 companies

3399. Smallest Substring With Identical Characters IIVideo

Solution39.0%Hard

Binary Search, String· 1 company

3405. Count the Number of Arrays with K Matching Adjacent ElementsVideo

Solution58.3%Hard

Combinatorics, Math· 5 companies

3406. Find the Lexicographically Largest String From the Box IIVideoPremium

Solution48.9%Hard

String, Two Pointers

3410. Maximize Subarray Sum After Removing All Occurrences of One ElementVideo

–23.0%Hard

Array, Dynamic Programming +1· 2 companies

3414. Maximum Score of Non-overlapping IntervalsVideo

Solution65.9%Hard

Array, Binary Search +2· 2 companies

3420. Count Non-Decreasing Subarrays After K OperationsVideo

–25.0%Hard

Array, Monotonic Queue +5· 2 companies

3425. Longest Special PathVideo

–23.2%Hard

Array, Depth-First Search +3

3426. Manhattan Distances of All Arrangements of PiecesVideo

–33.5%Hard

Combinatorics, Math· 3 companies

3430. Maximum and Minimum Sums of at Most Size K SubarraysVideo

Solution25.9%Hard

3435. Frequencies of Shortest SupersequencesVideo

–22.2%Hard

Array, Bit Manipulation +4· 1 company

3441. Minimum Cost Good CaptionVideo

–20.5%Hard

Dynamic Programming, String· 2 companies

3444. Minimum Increments for Target Multiples in an ArrayVideo

–27.5%Hard

Array, Bit Manipulation +4

3445. Maximum Difference Between Even and Odd Frequency IIVideo

Solution48.7%Hard

Enumeration, Prefix Sum +2· 6 companies

3448. Count Substrings Divisible By Last DigitVideo

–23.7%Hard

Dynamic Programming, String· 1 company

3449. Maximize the Minimum Game ScoreVideo

–26.2%Hard

Array, Binary Search +1· 2 companies

3451. Find Invalid IP AddressesVideo

Solution49.6%Hard

3454. Separate Squares IIVideo

Solution59.2%Hard

Array, Binary Search +2· 2 companies

3455. Shortest Matching SubstringVideo

Solution24.5%Hard

Binary Search, String +2· 1 company

3459. Length of Longest V-Shaped Diagonal SegmentVideo

Solution56.3%Hard

Array, Dynamic Programming +2· 5 companies

3463. Check If Digits Are Equal in String After Operations IIVideo

–14.3%Hard

Combinatorics, Math +2· 2 companies

3464. Maximize the Distance Between Points on a SquareVideo

Solution51.3%Hard

Array, Binary Search +3· 2 companies

3470. Permutations IVVideo

–32.8%Hard

Array, Combinatorics +2

3474. Lexicographically Smallest Generated StringVideo

Solution53.3%Hard

Greedy, String +1· 5 companies

3480. Maximize Subarrays After Removing One Conflicting PairVideo

Solution64.6%Hard

Array, Enumeration +2· 5 companies

3482. Analyze Organization HierarchyVideo

Solution62.9%Hard

Database· 1 company

3485. Longest Common Prefix of K Strings After RemovalVideo

Solution24.3%Hard

Array, String +1

3486. Longest Special Path IIVideo

–19.8%Hard

Array, Depth-First Search +3· 1 company

3490. Count Beautiful NumbersVideo

–24.5%Hard

Dynamic Programming· 1 company

3495. Minimum Operations to Make Array Elements ZeroVideo

Solution60.4%Hard

Array, Bit Manipulation +1· 4 companies

3500. Minimum Cost to Divide Array Into SubarraysVideo

–28.2%Hard

Array, Dynamic Programming +1

3501. Maximize Active Section with Trade IIVideo

Solution64.7%Hard

Array, Binary Search +2

3504. Longest Palindrome After Substring Concatenation IIVideo

Solution18.4%Hard

Dynamic Programming, String +1· 1 company

3505. Minimum Operations to Make Elements Within K Subarrays EqualVideo

–27.8%Hard

Array, Dynamic Programming +4

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

Showing 751–800 of 942