2Longest Substring Without Repeating CharactersMediumSolve → 3Longest Palindromic SubstringMediumSolve → 8Minimum Cost to Connect SticksMediumSolve → 9Best Time to Buy and Sell StockEasySolve → 10Best Time to Buy and Sell Stock IIMediumSolve → 13Minimum Absolute DifferenceEasySolve → 15Check if Number Has Equal Digit Count and Digit ValueEasySolve → 16Find Resultant Array After Removing AnagramsEasySolve → 17Intersection of Two ArraysEasySolve → 18Minimum Swaps to Make Strings EqualMediumSolve → 20Non-overlapping IntervalsMediumSolve → 21Reverse Odd Levels of Binary TreeMediumSolve → 22Minimum Cost to Make Array EqualHardSolve → 23Display Table of Food Orders in a RestaurantMediumSolve → 24Maximum Number of Points From Grid QueriesHardSolve → 25Minimum Suffix FlipsMediumSolve → 26Minimum Operations to Make All Array Elements EqualMediumSolve → 28Lexicographically Smallest String After Applying OperationsMediumSolve → 29Minimum String Length After Removing SubstringsEasySolve → 31Determine Color of a Chessboard SquareEasySolve → 32Suspicious Bank AccountsMediumSolve → 33Numbers With Repeated DigitsHardSolve → 34Lexicographically Smallest String After a SwapEasySolve → 35Button with Longest Push TimeEasySolve → 36Maximum Product of Two Elements in an ArrayEasySolve → 37Rearrange Array to Maximize Prefix ScoreMediumSolve → 38Top K Frequent ElementsMediumSolve → 39Count Binary SubstringsEasySolve → 42Two Sum II - Input Array Is SortedMediumSolve → 44Find Occurrences of an Element in an ArrayMediumSolve → 45Letter Combinations of a Phone NumberMediumSolve → 47Container With Most WaterMediumSolve → 50Minimum Moves to Equal Array ElementsMediumSolve → 51Find Median from Data StreamHardSolve → 53Minimum Number of Steps to Make Two Strings AnagramMediumSolve → 54Sliding Window MaximumHardSolve → 55Number of Ways to Split ArrayMediumSolve → 58Divide Players Into Teams of Equal SkillMediumSolve → 60Find the Winner of an Array GameMediumSolve → 61Find The First Player to win K Games in a RowMediumSolve → 62Find Common CharactersEasySolve → 63Taking Maximum Energy From the Mystic DungeonMediumSolve → 64Minimum Time to Type Word Using Special TypewriterEasySolve → 65Subarray Sums Divisible by KMediumSolve → 69Get Equal Substrings Within BudgetMediumSolve → 70Sell Diminishing-Valued Colored BallsMediumSolve → 71First Unique Character in a StringEasySolve → 72Two Best Non-Overlapping EventsMediumSolve → 75Longest Consecutive SequenceMediumSolve → 77Construct String With Repeat LimitMediumSolve → 78Minimum Prefix Removal to Make Array Strictly IncreasingMediumSolve →