Coding problems

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

Longest Repeat-Free StretchHash Table · String · Sliding WindowMedium Word Blocks in Any OrderHash Table · String · Sliding WindowHard Shortest Covering WindowHash Table · String · Sliding WindowHard Two-Letter StretchHash Table · String · Sliding WindowMedium Recurring Gene WindowsBit Manipulation · Hash Table · StringMedium Shortest Stretch to the GoalArray · Binary Search · Prefix SumMedium Repeat Within ReachArray · Hash Table · Sliding WindowEasy Close Readings NearbyArray · Bucket Sort · Ordered SetHard Moving Window MaximumQueue · Array · Sliding WindowHard Window with Few Kinds of LettersHash Table · String · Sliding WindowMedium Every Letter at Least k TimesHash Table · String · Divide and ConquerMedium Evenly Stepped StretchesArray · Dynamic Programming · Sliding WindowMedium One-Color Run After RepaintsHash Table · String · Sliding WindowMedium Hidden Anagram WindowsHash Table · String · Sliding WindowMedium Moving Window MedianArray · Hash Table · Sliding WindowHard Longest Run of Ones With One FixArray · Dynamic Programming · Sliding WindowMedium Hidden AnagramHash Table · Two Pointers · StringMedium Values One ApartArray · Hash Table · CountingEasy Narrowest Range Touching Every ListGreedy · Array · Hash TableHard Best Window AverageArray · Sliding WindowEasy Nearest k ValuesArray · Two Pointers · Binary SearchMedium A Dark Gap Between Street LampsBinary Indexed Tree · Segment Tree · QueueHard Windows With a Small ProductArray · Binary Search · Prefix SumMedium Longest Shared RunArray · Binary Search · Dynamic ProgrammingMedium Shortest Window Holding a SubsequenceString · Dynamic Programming · Sliding WindowHard Chance of Not Going OverMath · Dynamic Programming · Sliding WindowMedium Shortest Stretch Reaching a TotalQueue · Array · Binary SearchHard Two-Genre Stretch of a PlaylistArray · Hash Table · Sliding WindowMedium Windows With an Exact Alarm CountArray · Hash Table · Prefix SumMedium Sawtooth ReadingsArray · Dynamic Programming · Sliding WindowMedium Stretches With Exactly k KindsArray · Hash Table · CountingHard Light Every Lamp With a WindowBit Manipulation · Queue · ArrayHard Longest Run of Ones With k FixesArray · Binary Search · Prefix SumMedium Two Separate WindowsArray · Dynamic Programming · Sliding WindowMedium Longest Repeated FragmentString · Binary Search · Suffix ArrayHard The Barista's Calm StreakArray · Sliding WindowMedium Windows Without RepeatsHash Table · String · Sliding WindowMedium Gather the OnesArray · Sliding WindowMedium Longest Letter Run After One SwapHash Table · String · Sliding WindowMedium Step Streak ScoreArray · Sliding WindowEasy Matching Stretch Within BudgetString · Binary Search · Prefix SumMedium Even Out the Four KeysString · Sliding WindowMedium Stretches With k Odd NumbersArray · Hash Table · MathMedium Most Frequent Short FragmentHash Table · String · Sliding WindowMedium Strong Runs of Fixed LengthArray · Sliding WindowMedium Windows Holding a, b and cHash Table · String · Sliding WindowMedium Take Only From the EndsArray · Prefix Sum · Sliding WindowMedium Maximum Sum With Short HopsQueue · Array · Dynamic ProgrammingHard Longest Tight-Range StretchQueue · Array · Ordered SetMedium Vowel-Richest WindowString · Sliding WindowMedium

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