Coding problems

Algorithm problems with tests in Python, JavaScript, Java, Go and C++, checked on our server.

Longest Mirror FragmentTwo Pointers · String · Dynamic ProgrammingMedium Two Boards Holding WaterGreedy · Array · Two PointersMedium Zero-Sum TriplesArray · Two Pointers · SortingMedium Triple Sum Nearest the TargetArray · Two Pointers · SortingMedium Four Numbers to a TargetArray · Two Pointers · SortingMedium Drop the K-th Node From the TailLinked List · Two PointersMedium Squeeze Repeats Out of a Sorted ArrayArray · Two PointersEasy Drop the Unwanted ValueArray · Two PointersEasy Where the Fragment StartsTwo Pointers · String · String MatchingEasy Next Arrangement in OrderArray · Two PointersMedium Water Between WallsStack · Array · Two PointersHard Move the Tail to the FrontLinked List · Two PointersMedium Flags in Three ColorsArray · Two Pointers · SortingMedium At Most Two CopiesArray · Two PointersMedium Sorted List, Unique Values OnlyLinked List · Two PointersMedium Split a List Around a PivotLinked List · Two PointersMedium Merge Into the Spare TailArray · Two Pointers · SortingEasy Mirror Phrase CheckTwo Pointers · StringEasy List Folded From Both EndsStack · Recursion · Linked ListMedium Sorting a Linked ListLinked List · Two Pointers · Divide and ConquerMedium Words in Reverse OrderTwo Pointers · StringMedium Exactly One Edit ApartTwo Pointers · StringMedium Which Release Is NewerTwo Pointers · StringMedium Pair in a Sorted ListArray · Two Pointers · Binary SearchMedium Reverse the Word Order in PlaceTwo Pointers · StringMedium Roll an Array to the RightArray · Math · Two PointersMedium Digit Squares Down to OneHash Table · Math · Two PointersEasy Symmetric Bead StringStack · Recursion · Linked ListEasy Same When FlippedHash Table · Two Pointers · StringEasy Studios for Recording SessionsGreedy · Array · Two PointersMedium Triples Under a LimitArray · Two Pointers · Binary SearchMedium K Keys Nearest to a TargetStack · Tree · Depth-First SearchHard Zeros to the BackArray · Two PointersEasy Spot the Extra CopyBit Manipulation · Array · Two PointersMedium Largest Number From Two RowsStack · Greedy · ArrayHard Flip the Characters in PlaceTwo Pointers · StringEasy Mirror the VowelsTwo Pointers · StringEasy Values in Both ListsArray · Hash Table · Two PointersEasy Shared Values With RepeatsArray · Hash Table · Two PointersEasy Sorted Parabola ValuesArray · Math · Two PointersMedium Hidden in OrderTwo Pointers · String · Dynamic ProgrammingEasy Word With Counted GapsTwo Pointers · StringEasy Packing Runs in PlaceTwo Pointers · StringMedium Cake Slices for GuestsGreedy · Array · Two PointersEasy One-Way Jump CycleArray · Hash Table · Two PointersMedium Warm Every CabinArray · Two Pointers · Binary SearchMedium A Sequence That Describes ItselfTwo Pointers · StringMedium A Subsequence of One Word OnlyArray · Hash Table · Two PointersMedium Longest Word by Crossing OutArray · Two Pointers · StringMedium Pairs With a Fixed GapArray · Hash Table · Two PointersMedium

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