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942 problems

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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

3911. K-th Smallest Remaining Even Integer in Subarray QueriesVideo

–28.6%Hard

Array, Binary Search

3915. Maximum Sum of Alternating Subsequence With Distance at Least KVideo

Solution30.7%Hard

Array, Dynamic Programming +1· 1 company

3920. Maximize Fixed Points After DeletionsVideo

–19.9%Hard

Array, Binary Search +1· 1 company

3924. Minimum Threshold Path With Limited Heavy EdgesVideo

–39.0%Hard

Binary Search, Breadth-First Search +1

3928. Minimum Cost to Buy Apples IIVideo

–31.8%Hard

Array, Graph +2· 1 company

3934. Smallest Unique SubarrayVideo

Solution39.7%Hard

Array, Binary Search +4

3939. Count Non Adjacent Subsets in a Rooted TreeVideo

–51.7%Hard

Array, Depth-First Search +2· 1 company

3943. Number of Pairs After IncrementVideo

–20.9%Hard

Array, Counting +2

3948. Lexicographically Maximum MEX ArrayVideo

–53.6%Hard

Array, Greedy +2· 2 companies

3953. Maximum Score with Co-Prime ElementVideo

–27.5%Hard

Array, Combinatorics +4· 2 companies

3956. Maximum Sum of M Non-Overlapping Subarrays IVideo

–26.3%Hard

Array, Binary Search +5

3957. Maximum Sum of M Non-Overlapping Subarrays IIVideo

–16.6%Hard

Array, Binary Search +5

3962. Maximum Subarray Sum After at Most K SwapsVideo

Solution14.2%Hard

Array, Binary Indexed Tree +5· 1 company

3966. Count Good Integers in a RangeVideo

–49.8%Hard

Dynamic Programming, Math

3971. Maximum Total ValueVideo

–29.7%Hard

Array, Binary Search +2· 1 company

3977. Minimum Time to Reach Target With Limited PowerVideo

Solution40.4%Hard

Array, Dynamic Programming +3

3981. Count Distinct Ways to Form Target from Two StringsVideo

–46.4%Hard

Dynamic Programming, Prefix Sum +1

3985. Palindromic Subarray SumVideo

–34.6%Hard

Array, Binary Search +2

3989. Maximum Consistent Columns in a GridVideo

–68.7%Hard

Array, Dynamic Programming +1

3995. Minimum Cost to Convert String IIIVideo

–55.6%Hard

Array, Dynamic Programming +1

3999. Minimum Number of String Groups Through TransformationsVideo

–47.9%Hard

Hash Table, String +1

4003. Minimum Cost Path with Alternating Directions IIIVideo

Solution61.4%Hard

Array, Graph +3

4007. Widest Possible FenceVideo

Solution16.9%Hard

Array, Counting +2

4009. Minimum Possible Maximum Waiting TimeVideo

–29.9%Hard

Array, Dynamic Programming +1

4013. Count Subarrays With Even Odd Ratio IIVideo

Solution40.9%Hard

Array, Binary Indexed Tree +4

4017. Peaks in Array IIVideo

–28.4%Hard

Array, Divide and Conquer +1

4023. Elevator Requests IIVideo

–27.6%Hard

Array, Dynamic Programming +1

4027. Elevator Requests IIIVideo

Solution45.7%Hard

Array, Bit Manipulation +3

4029. Elevator Requests IVVideoPremium

Solution58.3%Hard

–

4033. Valid K-Unique Subarrays IVideo

–34.8%Hard

Array, Binary Indexed Tree +4

4037. Maximum Valid Split Positions IIVideo

Solution32.2%Hard

Array, Enumeration +2

4041. Minimum Operations to Form Subset Sum IIVideo

Solution49.3%Hard

Array, Dynamic Programming

4046. Minimum Cost Path With At Most K TurnsVideo

–53.9%Hard

Array, Graph +3

4051. Count Subarrays with Distant SumsVideo

Solution32.8%Hard

Array, Binary Indexed Tree +3

4059. Lexicographically Largest Power ArrayVideo

–24.9%Hard

Array, Bit Manipulation +1

4064. Longest Subarray Divisible by K with At Most One Negation IIVideo

Solution24.7%Hard

Array, Binary Search +2

4068. Maximize Meeting Earnings with Idle GapsVideo

Solution39.0%Hard

Array, Binary Search +2

4073. Count Good StringsVideo

–46.8%Hard

–

4077. Minimize Inversions in a Prefix TreeVideo

–38.4%Hard

–

4081. Prime Subset Selection IIVideo

–40.9%Hard

–

4086. Minimum Interval Selection to Cover Target IntervalsVideo

Solution34.0%Hard

–

4091. Count Magical Substring Pairs IIVideo

–34.0%Hard

–

Showing 901–942 of 942