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Problems

23 problems

Has videoPremium onlyReset
CountingArray566Dynamic Programming328String188Math182Binary Search133Hash Table132Sorting104Greedy102Bit Manipulation101Graph92Depth-First Search88Heap (Priority Queue)77Prefix Sum75Matrix74Breadth-First Search70All topics

Hard · With video · 23 results

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TitleSolutionAcceptDifficultyTopics
358. Rearrange String k Distance ApartVideoPremium
Solution39.9%Hard
Counting, Greedy +4· 4 companies
992. Subarrays with K Different IntegersVideo
Solution69.0%Hard
Array, Counting +2· 18 companies
1121. Divide Array Into Increasing SequencesVideoPremium
Solution65.4%Hard
Array, Counting· 1 company
1819. Number of Different Subsequences GCDsVideo
Solution47.2%Hard
Array, Counting +2· 2 companies
1857. Largest Color Value in a Directed GraphVideo
Solution57.3%Hard
Counting, Dynamic Programming +4· 5 companies
2014. Longest Subsequence Repeated k TimesVideo
Solution71.3%Hard
Backtracking, Counting +3· 3 companies
2025. Maximum Number of Ways to Partition an ArrayVideo
Solution36.2%Hard
Array, Counting +3· 2 companies
2416. Sum of Prefix Scores of StringsVideo
Solution60.6%Hard
Array, Counting +2· 3 companies
2499. Minimum Total Cost to Make Arrays UnequalVideo
Solution41.3%Hard
Array, Counting +2· 1 company
2514. Count AnagramsVideo
Solution38.4%Hard
Combinatorics, Counting +3· 1 company
2547. Minimum Cost to Split an ArrayVideo
Solution45.4%Hard
Array, Counting +2· 1 company
3267. Count Almost Equal Pairs IIVideo
Solution27.7%Hard
Array, Counting +3
3279. Maximum Total Area Occupied by PistonsVideoPremium
Solution41.3%Hard
Array, Counting +4
3312. Sorted GCD Pair QueriesVideo
Solution58.4%Hard
Array, Binary Search +6· 1 company
3337. Total Characters in String After Transformations IIVideo
Solution58.0%Hard
Counting, Dynamic Programming +3· 2 companies
3389. Minimum Operations to Make Character Frequencies EqualVideo
–25.8%Hard
Counting, Dynamic Programming +3· 2 companies
3518. Smallest Palindromic Rearrangement IIVideo
Solution44.3%Hard
Combinatorics, Counting +3
3636. Threshold Majority QueriesVideo
–22.5%Hard
Array, Binary Search +4· 4 companies
3715. Sum of Perfect Square AncestorsVideo
–41.3%Hard
Array, Counting +5· 3 companies
3785. Minimum Swaps to Avoid Forbidden ValuesVideo
–30.4%Hard
Array, Counting +2· 1 company
3859. Count Subarrays With K Distinct IntegersVideo
Solution21.0%Hard
Array, Counting +2
3943. Number of Pairs After IncrementVideo
–20.9%Hard
Array, Counting +2
4007. Widest Possible FenceVideo
Solution16.9%Hard
Array, Counting +2
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