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Array2,209 String870 Hash Table786 Math682 Dynamic Programming666 Sorting504 Greedy480 Binary Search352 Depth-First Search335 Database303 Bit Manipulation283 Matrix278 Tree261 Breadth-First Search255 Two Pointers249 All topics

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TitleSolutionAcceptDifficultyTopics

3931. Check Adjacent Digit DifferencesVideo

Solution77.1%Easy

3941. Password StrengthVideo

Solution74.5%Medium

Hash Table, String

3952. Maximum Total Value of Covered IndicesVideo

–28.5%Medium

Array, Dynamic Programming +2· 1 company

3955. Valid Binary Strings With Cost LimitVideo

Solution78.5%Medium

Backtracking, Bit Manipulation +2

3968. Maximum Manhattan Distance After All MovesVideo

Solution63.3%Medium

Counting, Math +1

3970. Shortest Path With At Most K Consecutive Identical CharactersVideo

–44.7%Medium

Graph, Heap (Priority Queue) +2

3980. Minimum Operations to Transform Binary StringVideo

–37.0%Medium

Dynamic Programming, Greedy +1

3981. Count Distinct Ways to Form Target from Two StringsVideo

–46.4%Hard

Dynamic Programming, Prefix Sum +1

3983. Subsequence After One ReplacementVideo

Solution21.6%Medium

String, Two Pointers

3986. Number of Elapsed Seconds Between Two TimesVideo

Solution82.5%Easy

3992. Rearrange String to Avoid Character PairVideo

Solution77.8%Easy

Sorting, String +1

3995. Minimum Cost to Convert String IIIVideo

–55.6%Hard

Array, Dynamic Programming +1

3998. Transform Binary String Using Subsequence SortVideo

–37.9%Medium

Array, Greedy +2

3999. Minimum Number of String Groups Through TransformationsVideo

–47.9%Hard

Hash Table, String +1

4006. Count Valid PrefixesVideo

Solution78.0%Easy

Counting, String

4021. Minimum Operations to Make a Rotated Palindrome IVideo

Solution63.9%Medium

Enumeration, Math +1

4026. Maximum Gap Between StationsVideo

Solution52.4%Medium

Greedy, String +1

4030. Check ASCII PalindromicVideo

Solution60.2%Easy

Bit Manipulation, String +1

4036. Lexicographically Largest String After Pair TransformationsVideo

Solution42.8%Medium

Array, Bit Manipulation +2

4043. Count Rotations With Exactly K Equal Adjacent PairsVideo

Solution72.3%Easy

Enumeration, Sliding Window +1

Showing 851–870 of 870