문제 목록

1.Two SumEasy
3.Longest Substring Without Repeating CharactersMed.
5.Longest Palindromic SubstringMed.
8.String to Integer (atoi)Med.
11.Container With Most WaterMed.
12.Integer to RomanMed.
16.3Sum ClosestMed.
18.4SumMed.
19.Remove Nth Node From End of ListMed.
24.Swap Nodes in PairsMed.
26.Remove Duplicates from Sorted ArrayEasy
29.Divide Two IntegersMed.
31.Next PermutationMed.
33.Search in Rotated Sorted ArrayMed.
34.Find First and Last Position of Element in Sorted ArrayMed.
36.Valid SudokuMed.
38.Count and SayMed.
39.Combination SumMed.
40.Combination Sum IIMed.
41.First Missing PositiveHard
42.Trapping Rain WaterHard
43.Multiply StringsMed.
48.Rotate ImageMed.
50.Pow(x, n)Med.
51.N-QueensHard
52.N-Queens IIHard
54.Spiral MatrixMed.
55.Jump GameMed.
56.Merge IntervalsMed.
57.Insert IntervalMed.
58.Length of Last WordEasy
59.Spiral Matrix IIMed.
61.Rotate ListMed.
62.Unique PathsMed.
64.Minimum Path SumMed.
70.Climbing StairsEasy
71.Simplify PathMed.
72.Edit DistanceMed.
73.Set Matrix ZeroesMed.
74.Search a 2D MatrixMed.
75.Sort ColorsMed.
76.Minimum Window SubstringHard
78.SubsetsMed.
79.Word SearchMed.
80.Remove Duplicates from Sorted Array IIMed.
81.Search in Rotated Sorted Array IIMed.
85.Maximal RectangleHard
86.Partition ListMed.
88.Merge Sorted ArrayEasy
89.Gray CodeMed.
90.Subsets IIMed.
91.Decode WaysMed.
92.Reverse Linked List IIMed.
93.Restore IP AddressesMed.
94.Binary Tree Inorder TraversalEasy
97.Interleaving StringMed.
99.Recover Binary Search TreeMed.
100.Same TreeEasy
101.Symmetric TreeEasy
102.Binary Tree Level Order TraversalMed.
103.Binary Tree Zigzag Level Order TraversalMed.
105.Construct Binary Tree from Preorder and Inorder TraversalMed.
106.Construct Binary Tree from Inorder and Postorder TraversalMed.
107.Binary Tree Level Order Traversal IIMed.
108.Convert Sorted Array to Binary Search TreeEasy
109.Convert Sorted List to Binary Search TreeMed.
110.Balanced Binary TreeEasy
111.Minimum Depth of Binary TreeEasy
112.Path SumEasy
113.Path Sum IIMed.
114.Flatten Binary Tree to Linked ListMed.
118.Pascal's TriangleEasy
119.Pascal's Triangle IIEasy
120.TriangleMed.
121.Best Time to Buy and Sell StockEasy
122.Best Time to Buy and Sell Stock IIMed.
123.Best Time to Buy and Sell Stock IIIHard
124.Binary Tree Maximum Path SumHard
125.Valid PalindromeEasy
128.Longest Consecutive SequenceMed.
129.Sum Root to Leaf NumbersMed.
131.Palindrome PartitioningMed.
134.Gas StationMed.
135.CandyHard
138.Copy List with Random PointerMed.
139.Word BreakMed.
140.Word Break IIHard
141.Linked List CycleEasy
142.Linked List Cycle IIMed.
143.Reorder ListMed.
144.Binary Tree Preorder TraversalEasy
146.LRU CacheMed.
147.Insertion Sort ListMed.
148.Sort ListMed.
149.Max Points on a LineHard
150.Evaluate Reverse Polish NotationMed.
151.Reverse Words in a StringMed.
160.Intersection of Two Linked ListsEasy
164.Maximum GapMed.
165.Compare Version NumbersMed.
166.Fraction to Recurring DecimalMed.
167.Two Sum II - Input Array Is SortedMed.
168.Excel Sheet Column TitleEasy
169.Majority ElementEasy
171.Excel Sheet Column NumberEasy
172.Factorial Trailing ZeroesMed.
173.Binary Search Tree IteratorMed.
179.Largest NumberMed.
187.Repeated DNA SequencesMed.
188.Best Time to Buy and Sell Stock IVHard
191.Number of 1 BitsEasy
198.House RobberMed.
199.Binary Tree Right Side ViewMed.
201.Bitwise AND of Numbers RangeMed.
202.Happy NumberEasy
204.Count PrimesMed.
205.Isomorphic StringsEasy
207.Course ScheduleMed.
208.Implement Trie (Prefix Tree)Med.
211.Design Add and Search Words Data StructureMed.
212.Word Search IIHard
214.Shortest PalindromeHard
215.Kth Largest Element in an ArrayMed.
221.Maximal SquareMed.
222.Count Complete Tree NodesEasy
223.Rectangle AreaMed.
224.Basic CalculatorHard
225.Implement Stack using QueuesEasy
227.Basic Calculator IIMed.
228.Summary RangesEasy
229.Majority Element IIMed.
230.Kth Smallest Element in a BSTMed.
232.Implement Queue using StacksEasy
234.Palindrome Linked ListEasy
236.Lowest Common Ancestor of a Binary TreeMed.
238.Product of Array Except SelfMed.
241.Different Ways to Add ParenthesesMed.
242.Valid AnagramEasy
257.Binary Tree PathsEasy
258.Add DigitsEasy
260.Single Number IIIMed.
263.Ugly NumberEasy
264.Ugly Number IIMed.
268.Missing NumberEasy
273.Integer to English WordsHard
274.H-IndexMed.
275.H-Index IIMed.
279.Perfect SquaresMed.
283.Move ZeroesEasy
287.Find the Duplicate NumberMed.
289.Game of LifeMed.
290.Word PatternEasy
292.Nim GameEasy
295.Find Median from Data StreamHard
299.Bulls and CowsMed.
300.Longest Increasing SubsequenceMed.
303.Range Sum Query - ImmutableEasy
304.Range Sum Query 2D - ImmutableMed.
306.Additive NumberMed.
307.Range Sum Query - MutableMed.
310.Minimum Height TreesMed.
313.Super Ugly NumberMed.
316.Remove Duplicate LettersMed.
326.Power of ThreeEasy
328.Odd Even Linked ListMed.
330.Patching ArrayHard
338.Counting BitsEasy
341.Flatten Nested List IteratorMed.
342.Power of FourEasy
343.Integer BreakMed.
345.Reverse Vowels of a StringEasy
347.Top K Frequent ElementsMed.
349.Intersection of Two ArraysEasy
352.Data Stream as Disjoint IntervalsHard
367.Valid Perfect SquareEasy
368.Largest Divisible SubsetMed.
374.Guess Number Higher or LowerEasy
376.Wiggle SubsequenceMed.
377.Combination Sum IVMed.
380.Insert Delete GetRandom O(1)Med.
386.Lexicographical NumbersMed.
389.Find the DifferenceEasy
392.Is SubsequenceEasy
401.Binary WatchEasy
402.Remove K DigitsMed.
404.Sum of Left LeavesEasy
405.Convert a Number to HexadecimalEasy
406.Queue Reconstruction by HeightMed.
407.Trapping Rain Water IIHard
409.Longest PalindromeEasy
412.Fizz BuzzEasy
414.Third Maximum NumberEasy
415.Add StringsEasy
416.Partition Equal Subset SumMed.
419.Battleships in a BoardMed.
429.N-ary Tree Level Order TraversalMed.
432.All O`one Data StructureHard
433.Minimum Genetic MutationMed.
434.Number of Segments in a StringEasy
435.Non-overlapping IntervalsMed.
440.K-th Smallest in Lexicographical OrderHard
442.Find All Duplicates in an ArrayMed.
443.String CompressionMed.
445.Add Two Numbers IIMed.
448.Find All Numbers Disappeared in an ArrayEasy
451.Sort Characters By FrequencyMed.
452.Minimum Number of Arrows to Burst BalloonsMed.
455.Assign CookiesEasy
458.Poor PigsHard
459.Repeated Substring PatternEasy
461.Hamming DistanceEasy
462.Minimum Moves to Equal Array Elements IIMed.
463.Island PerimeterEasy
472.Concatenated WordsHard
476.Number ComplementEasy
482.License Key FormattingEasy
485.Max Consecutive OnesEasy
492.Construct the RectangleEasy
495.Teemo AttackingEasy
496.Next Greater Element IEasy
500.Keyboard RowEasy
501.Find Mode in Binary Search TreeEasy
502.IPOHard
504.Base 7Easy
506.Relative RanksEasy
507.Perfect NumberEasy
509.Fibonacci NumberEasy
513.Find Bottom Left Tree ValueMed.
514.Freedom TrailHard
515.Find Largest Value in Each Tree RowMed.
520.Detect CapitalEasy
521.Longest Uncommon Subsequence IEasy
523.Continuous Subarray SumMed.
525.Contiguous ArrayMed.
530.Minimum Absolute Difference in BSTEasy
537.Complex Number MultiplicationMed.
539.Minimum Time DifferenceMed.
541.Reverse String IIEasy
542.01 MatrixMed.
543.Diameter of Binary TreeEasy
552.Student Attendance Record IIHard
557.Reverse Words in a String IIIEasy
559.Maximum Depth of N-ary TreeEasy
561.Array PartitionEasy
563.Binary Tree TiltEasy
564.Find the Closest PalindromeHard
567.Permutation in StringMed.
572.Subtree of Another TreeEasy
575.Distribute CandiesEasy
576.Out of Boundary PathsMed.
583.Delete Operation for Two StringsMed.
587.Erect the FenceHard
589.N-ary Tree Preorder TraversalEasy
590.N-ary Tree Postorder TraversalEasy
592.Fraction Addition and SubtractionMed.
594.Longest Harmonious SubsequenceEasy
598.Range Addition IIEasy
599.Minimum Index Sum of Two ListsEasy
605.Can Place FlowersEasy
606.Construct String from Binary TreeMed.
621.Task SchedulerMed.
623.Add One Row to TreeMed.
624.Maximum Distance in ArraysMed.
628.Maximum Product of Three NumbersEasy
629.K Inverse Pairs ArrayHard
630.Course Schedule IIIHard
632.Smallest Range Covering Elements from K ListsHard
633.Sum of Square NumbersMed.
637.Average of Levels in Binary TreeEasy
641.Design Circular DequeMed.
643.Maximum Average Subarray IEasy
647.Palindromic SubstringsMed.
648.Replace WordsMed.
649.Dota2 SenateMed.
654.Maximum Binary TreeMed.
657.Robot Return to OriginEasy
658.Find K Closest ElementsMed.
661.Image SmootherEasy
664.Strange PrinterHard
665.Non-decreasing ArrayMed.
670.Maximum SwapMed.
671.Second Minimum Node In a Binary TreeEasy
673.Number of Longest Increasing SubsequenceMed.
674.Longest Continuous Increasing SubsequenceEasy
678.Valid Parenthesis StringMed.
680.Valid Palindrome IIEasy
682.Baseball GameEasy
684.Redundant ConnectionMed.
688.Knight Probability in ChessboardMed.
689.Maximum Sum of 3 Non-Overlapping SubarraysHard
693.Binary Number with Alternating BitsEasy
697.Degree of an ArrayEasy
703.Kth Largest Element in a StreamEasy
706.Design HashMapEasy
713.Subarray Product Less Than KMed.
714.Best Time to Buy and Sell Stock with Transaction FeeMed.
717.1-bit and 2-bit CharactersEasy
718.Maximum Length of Repeated SubarrayMed.
719.Find K-th Smallest Pair DistanceHard
724.Find Pivot IndexEasy
725.Split Linked List in PartsMed.
726.Number of AtomsHard
728.Self Dividing NumbersEasy
729.My Calendar IMed.
731.My Calendar IIMed.
735.Asteroid CollisionMed.
739.Daily TemperaturesMed.
745.Prefix and Suffix SearchHard
746.Min Cost Climbing StairsEasy
747.Largest Number At Least Twice of OthersEasy
748.Shortest Completing WordEasy
752.Open the LockMed.
762.Prime Number of Set Bits in Binary RepresentationEasy
763.Partition LabelsMed.
766.Toeplitz MatrixEasy
769.Max Chunks To Make SortedMed.
771.Jewels and StonesEasy
773.Sliding PuzzleHard
779.K-th Symbol in GrammarMed.
781.Rabbits in ForestMed.
783.Minimum Distance Between BST NodesEasy
785.Is Graph Bipartite?Med.
786.K-th Smallest Prime FractionMed.
787.Cheapest Flights Within K StopsMed.
790.Domino and Tromino TilingMed.
791.Custom Sort StringMed.
796.Rotate StringEasy
797.All Paths From Source to TargetMed.
799.Champagne TowerMed.
802.Find Eventual Safe StatesMed.
806.Number of Lines To Write StringEasy
807.Max Increase to Keep City SkylineMed.
811.Subdomain Visit CountMed.
814.Binary Tree PruningMed.
815.Bus RoutesHard
819.Most Common WordEasy
820.Short Encoding of WordsMed.
821.Shortest Distance to a CharacterEasy
823.Binary Trees With FactorsMed.
824.Goat LatinEasy
826.Most Profit Assigning WorkMed.
827.Making A Large IslandHard
830.Positions of Large GroupsEasy
832.Flipping an ImageEasy
834.Sum of Distances in TreeHard
836.Rectangle OverlapEasy
837.New 21 GameMed.
838.Push DominoesMed.
840.Magic Squares In GridMed.
841.Keys and RoomsMed.
844.Backspace String CompareEasy
846.Hand of StraightsMed.
847.Shortest Path Visiting All NodesHard
852.Peak Index in a Mountain ArrayMed.
857.Minimum Cost to Hire K WorkersHard
860.Lemonade ChangeEasy
861.Score After Flipping MatrixMed.
862.Shortest Subarray with Sum at Least KHard
863.All Nodes Distance K in Binary TreeMed.
865.Smallest Subtree with all the Deepest NodesMed.
867.Transpose MatrixEasy
868.Binary GapEasy
872.Leaf-Similar TreesEasy
873.Length of Longest Fibonacci SubsequenceMed.
874.Walking Robot SimulationMed.
875.Koko Eating BananasMed.
876.Middle of the Linked ListEasy
880.Decoded String at IndexMed.
881.Boats to Save PeopleMed.
883.Projection Area of 3D ShapesEasy
884.Uncommon Words from Two SentencesEasy
885.Spiral Matrix IIIMed.
886.Possible BipartitionMed.
888.Fair Candy SwapEasy
889.Construct Binary Tree from Preorder and Postorder TraversalMed.
890.Find and Replace PatternMed.
892.Surface Area of 3D ShapesEasy
893.Groups of Special-Equivalent StringsMed.
894.All Possible Full Binary TreesMed.
896.Monotonic ArrayEasy
899.Orderly QueueHard
901.Online Stock SpanMed.
905.Sort Array By ParityEasy
907.Sum of Subarray MinimumsMed.
908.Smallest Range IEasy
914.X of a Kind in a Deck of CardsEasy
916.Word SubsetsMed.
917.Reverse Only LettersEasy
921.Minimum Add to Make Parentheses ValidMed.
922.Sort Array By Parity IIEasy
925.Long Pressed NameEasy
930.Binary Subarrays With SumMed.
931.Minimum Falling Path SumMed.
933.Number of Recent CallsEasy
934.Shortest BridgeMed.
935.Knight DialerMed.
938.Range Sum of BSTEasy
941.Valid Mountain ArrayEasy
942.DI String MatchEasy
944.Delete Columns to Make SortedEasy
945.Minimum Increment to Make Array UniqueMed.
947.Most Stones Removed with Same Row or ColumnMed.
948.Bag of TokensMed.
950.Reveal Cards In Increasing OrderMed.
951.Flip Equivalent Binary TreesMed.
953.Verifying an Alien DictionaryEasy
959.Regions Cut By SlashesMed.
961.N-Repeated Element in Size 2N ArrayEasy
962.Maximum Width RampMed.
965.Univalued Binary TreeEasy
967.Numbers With Same Consecutive DifferencesMed.
968.Binary Tree CamerasHard
969.Pancake SortingMed.
974.Subarray Sums Divisible by KMed.
977.Squares of a Sorted ArrayEasy
979.Distribute Coins in Binary TreeMed.
980.Unique Paths IIIHard
983.Minimum Cost For TicketsMed.
985.Sum of Even Numbers After QueriesMed.
987.Vertical Order Traversal of a Binary TreeHard
988.Smallest String Starting From LeafMed.
989.Add to Array-Form of IntegerEasy
992.Subarrays with K Different IntegersHard
993.Cousins in Binary TreeEasy
995.Minimum Number of K Consecutive Bit FlipsHard
997.Find the Town JudgeEasy
999.Available Captures for RookEasy
1002.Find Common CharactersEasy
1004.Max Consecutive Ones IIIMed.
1005.Maximize Sum Of Array After K NegationsEasy
1008.Construct Binary Search Tree from Preorder TraversalMed.
1013.Partition Array Into Three Parts With Equal SumEasy
1014.Best Sightseeing PairMed.
1018.Binary Prefix Divisible By 5Easy
1021.Remove Outermost ParenthesesEasy
1022.Sum of Root To Leaf Binary NumbersEasy
1026.Maximum Difference Between Node and AncestorMed.
1028.Recover a Tree From Preorder TraversalHard
1030.Matrix Cells in Distance OrderEasy
1035.Uncrossed LinesMed.
1037.Valid BoomerangEasy
1038.Binary Search Tree to Greater Sum TreeMed.
1043.Partition Array for Maximum SumMed.
1046.Last Stone WeightEasy
1047.Remove All Adjacent Duplicates In StringEasy
1048.Longest String ChainMed.
1051.Height CheckerEasy
1052.Grumpy Bookstore OwnerMed.
1061.Lexicographically Smallest Equivalent StringMed.
1072.Flip Columns For Maximum Number of Equal RowsMed.
1074.Number of Submatrices That Sum to TargetHard
1078.Occurrences After BigramEasy
1079.Letter Tile PossibilitiesMed.
1089.Duplicate ZerosEasy
1092.Shortest Common SupersequenceHard
1095.Find in Mountain ArrayHard
1103.Distribute Candies to PeopleEasy
1104.Path In Zigzag Labelled Binary TreeMed.
1105.Filling Bookcase ShelvesMed.
1106.Parsing A Boolean ExpressionHard
1108.Defanging an IP AddressEasy
1110.Delete Nodes And Return ForestMed.
1111.Maximum Nesting Depth of Two Valid Parentheses StringsMed.
1122.Relative Sort ArrayEasy
1123.Lowest Common Ancestor of Deepest LeavesMed.
1128.Number of Equivalent Domino PairsEasy
1137.N-th Tribonacci NumberEasy
1140.Stone Game IIMed.
1143.Longest Common SubsequenceMed.
1146.Snapshot ArrayMed.
1154.Day of the YearEasy
1155.Number of Dice Rolls With Target SumMed.
1160.Find Words That Can Be Formed by CharactersEasy
1161.Maximum Level Sum of a Binary TreeMed.
1171.Remove Zero Sum Consecutive Nodes from Linked ListMed.
1175.Prime ArrangementsEasy
1185.Day of the WeekEasy
1187.Make Array Strictly IncreasingHard
1189.Maximum Number of BalloonsEasy
1190.Reverse Substrings Between Each Pair of ParenthesesMed.
1200.Minimum Absolute DifferenceEasy
1207.Unique Number of OccurrencesEasy
1208.Get Equal Substrings Within BudgetMed.
1217.Minimum Cost to Move Chips to The Same PositionEasy
1218.Longest Arithmetic Subsequence of Given DifferenceMed.
1219.Path with Maximum GoldMed.
1220.Count Vowels PermutationHard
1221.Split a String in Balanced StringsEasy
1222.Queens That Can Attack the KingMed.
1232.Check If It Is a Straight LineEasy
1233.Remove Sub-Folders from the FilesystemMed.
1239.Maximum Length of a Concatenated String with Unique CharactersMed.
1248.Count Number of Nice SubarraysMed.
1249.Minimum Remove to Make Valid ParenthesesMed.
1252.Cells with Odd Values in a MatrixEasy
1255.Maximum Score Words Formed by LettersHard
1261.Find Elements in a Contaminated Binary TreeMed.
1266.Minimum Time Visiting All PointsEasy
1267.Count Servers that CommunicateMed.
1268.Search Suggestions SystemMed.
1269.Number of Ways to Stay in the Same Place After Some StepsHard
1275.Find Winner on a Tic Tac Toe GameEasy
1277.Count Square Submatrices with All OnesMed.
1281.Subtract the Product and Sum of Digits of an IntegerEasy
1282.Group the People Given the Group Size They Belong ToMed.
1286.Iterator for CombinationMed.
1287.Element Appearing More Than 25% In Sorted ArrayEasy
1289.Minimum Falling Path Sum IIHard
1290.Convert Binary Number in a Linked List to IntegerEasy
1291.Sequential DigitsMed.
1293.Shortest Path in a Grid with Obstacles EliminationHard
1295.Find Numbers with Even Number of DigitsEasy
1299.Replace Elements with Greatest Element on Right SideEasy
1304.Find N Unique Integers Sum up to ZeroEasy
1305.All Elements in Two Binary Search TreesMed.
1309.Decrypt String from Alphabet to Integer MappingEasy
1310.XOR Queries of a SubarrayMed.
1313.Decompress Run-Length Encoded ListEasy
1315.Sum of Nodes with Even-Valued GrandparentMed.
1317.Convert Integer to the Sum of Two No-Zero IntegersEasy
1323.Maximum 69 NumberEasy
1325.Delete Leaves With a Given ValueMed.
1328.Break a PalindromeMed.
1329.Sort the Matrix DiagonallyMed.
1331.Rank Transform of an ArrayEasy
1332.Remove Palindromic SubsequencesEasy
1334.Find the City With the Smallest Number of Neighbors at a Threshold DistanceMed.
1335.Minimum Difficulty of a Job ScheduleHard
1337.The K Weakest Rows in a MatrixEasy
1339.Maximum Product of Splitted Binary TreeMed.
1346.Check If N and Its Double ExistEasy
1347.Minimum Number of Steps to Make Two Strings AnagramMed.
1351.Count Negative Numbers in a Sorted MatrixEasy
1352.Product of the Last K NumbersMed.
1354.Construct Target Array With Multiple SumsHard
1356.Sort Integers by The Number of 1 BitsEasy
1358.Number of Substrings Containing All Three CharactersMed.
1359.Count All Valid Pickup and Delivery OptionsHard
1360.Number of Days Between Two DatesEasy
1361.Validate Binary Tree NodesMed.
1365.How Many Numbers Are Smaller Than the Current NumberEasy
1367.Linked List in Binary TreeMed.
1368.Minimum Cost to Make at Least One Valid Path in a GridHard
1370.Increasing Decreasing StringEasy
1371.Find the Longest Substring Containing Vowels in Even CountsMed.
1380.Lucky Numbers in a MatrixEasy
1381.Design a Stack With Increment OperationMed.
1382.Balance a Binary Search TreeMed.
1385.Find the Distance Value Between Two ArraysEasy
1389.Create Target Array in the Given OrderEasy
1394.Find Lucky Integer in an ArrayEasy
1395.Count Number of TeamsMed.
1399.Count Largest GroupEasy
1400.Construct K Palindrome StringsMed.
1403.Minimum Subsequence in Non-Increasing OrderEasy
1404.Number of Steps to Reduce a Number in Binary Representation to OneMed.
1405.Longest Happy StringMed.
1408.String Matching in an ArrayEasy
1413.Minimum Value to Get Positive Step by Step SumEasy
1415.The k-th Lexicographical String of All Happy Strings of Length nMed.
1417.Reformat The StringEasy
1418.Display Table of Food Orders in a RestaurantMed.
1420.Build Array Where You Can Find The Maximum Exactly K ComparisonsHard
1422.Maximum Score After Splitting a StringEasy
1423.Maximum Points You Can Obtain from CardsMed.
1424.Diagonal Traverse IIMed.
1425.Constrained Subsequence SumHard
1431.Kids With the Greatest Number of CandiesEasy
1436.Destination CityEasy
1437.Check If All 1's Are at Least Length K Places AwayEasy
1438.Longest Continuous Subarray With Absolute Diff Less Than or Equal to LimitMed.
1441.Build an Array With Stack OperationsMed.
1442.Count Triplets That Can Form Two Arrays of Equal XORMed.
1443.Minimum Time to Collect All Apples in a TreeMed.
1446.Consecutive CharactersEasy
1448.Count Good Nodes in Binary TreeMed.
1450.Number of Students Doing Homework at a Given TimeEasy
1455.Check If a Word Occurs As a Prefix of Any Word in a SentenceEasy
1456.Maximum Number of Vowels in a Substring of Given LengthMed.
1457.Pseudo-Palindromic Paths in a Binary TreeMed.
1458.Max Dot Product of Two SubsequencesHard
1460.Make Two Arrays Equal by Reversing SubarraysEasy
1461.Check If a String Contains All Binary Codes of Size KMed.
1462.Course Schedule IVMed.
1463.Cherry Pickup IIHard
1464.Maximum Product of Two Elements in an ArrayEasy
1465.Maximum Area of a Piece of Cake After Horizontal and Vertical CutsMed.
1470.Shuffle the ArrayEasy
1472.Design Browser HistoryMed.
1475.Final Prices With a Special Discount in a ShopEasy
1476.Subrectangle QueriesMed.
1480.Running Sum of 1d ArrayEasy
1481.Least Number of Unique Integers after K RemovalsMed.
1482.Minimum Number of Days to Make m BouquetsMed.
1486.XOR Operation in an ArrayEasy
1491.Average Salary Excluding the Minimum and Maximum SalaryEasy
1492.The kth Factor of nMed.
1493.Longest Subarray of 1's After Deleting One ElementMed.
1496.Path CrossingEasy
1497.Check If Array Pairs Are Divisible by kMed.
1502.Can Make Arithmetic Progression From SequenceEasy
1503.Last Moment Before All Ants Fall Out of a PlankMed.
1507.Reformat DateEasy
1508.Range Sum of Sorted Subarray SumsMed.
1509.Minimum Difference Between Largest and Smallest Value in Three MovesMed.
1512.Number of Good PairsEasy
1514.Path with Maximum ProbabilityMed.
1518.Water BottlesEasy
1519.Number of Nodes in the Sub-Tree With the Same LabelMed.
1523.Count Odd Numbers in an Interval RangeEasy
1524.Number of Sub-arrays With Odd SumMed.
1528.Shuffle StringEasy
1529.Minimum Suffix FlipsMed.
1530.Number of Good Leaf Nodes PairsMed.
1531.String Compression IIHard
1534.Count Good TripletsEasy
1539.Kth Missing Positive NumberEasy
1544.Make The String GreatEasy
1545.Find Kth Bit in Nth Binary StringMed.
1547.Minimum Cost to Cut a StickHard
1550.Three Consecutive OddsEasy
1552.Magnetic Force Between Two BallsMed.
1556.Thousand SeparatorEasy
1557.Minimum Number of Vertices to Reach All NodesMed.
1560.Most Visited Sector in a Circular TrackEasy
1561.Maximum Number of Coins You Can GetMed.
1566.Detect Pattern of Length M Repeated K or More TimesEasy
1568.Minimum Number of Days to Disconnect IslandHard
1569.Number of Ways to Reorder Array to Get Same BSTHard
1572.Matrix Diagonal SumEasy
1574.Shortest Subarray to be Removed to Make Array SortedMed.
1576.Replace All ?'s to Avoid Consecutive Repeating CharactersEasy
1578.Minimum Time to Make Rope ColorfulMed.
1579.Remove Max Number of Edges to Keep Graph Fully TraversableHard
1582.Special Positions in a Binary MatrixEasy
1588.Sum of All Odd Length SubarraysEasy
1590.Make Sum Divisible by PMed.
1592.Rearrange Spaces Between WordsEasy
1593.Split a String Into the Max Number of Unique SubstringsMed.
1598.Crawler Log FolderEasy
1603.Design Parking SystemEasy
1605.Find Valid Matrix Given Row and Column SumsMed.
1608.Special Array With X Elements Greater Than or Equal XEasy
1609.Even Odd TreeMed.
1611.Minimum One Bit Operations to Make Integers ZeroHard
1614.Maximum Nesting Depth of the ParenthesesEasy
1619.Mean of Array After Removing Some ElementsEasy
1624.Largest Substring Between Two Equal CharactersEasy
1629.Slowest KeyEasy
1630.Arithmetic SubarraysMed.
1636.Sort Array by Increasing FrequencyEasy
1637.Widest Vertical Area Between Two Points Containing No PointsEasy
1638.Count Substrings That Differ by One CharacterMed.
1639.Number of Ways to Form a Target String Given a DictionaryHard
1640.Check Array Formation Through ConcatenationEasy
1642.Furthest Building You Can ReachMed.
1646.Get Maximum in Generated ArrayEasy
1647.Minimum Deletions to Make Character Frequencies UniqueMed.
1652.Defuse the BombEasy
1653.Minimum Deletions to Make String BalancedMed.
1656.Design an Ordered StreamEasy
1657.Determine if Two Strings Are CloseMed.
1658.Minimum Operations to Reduce X to ZeroMed.
1662.Check If Two String Arrays are EquivalentEasy
1668.Maximum Repeating SubstringEasy
1669.Merge In Between Linked ListsMed.
1671.Minimum Number of Removals to Make Mountain ArrayHard
1672.Richest Customer WealthEasy
1678.Goal Parser InterpretationEasy
1679.Max Number of K-Sum PairsMed.
1680.Concatenation of Consecutive Binary NumbersMed.
1684.Count the Number of Consistent StringsEasy
1685.Sum of Absolute Differences in a Sorted ArrayMed.
1688.Count of Matches in TournamentEasy
1689.Partitioning Into Minimum Number Of Deci-Binary NumbersMed.
1694.Reformat Phone NumberEasy
1695.Maximum Erasure ValueMed.
1696.Jump Game VIMed.
1700.Number of Students Unable to Eat LunchEasy
1701.Average Waiting TimeMed.
1704.Determine if String Halves Are AlikeEasy
1706.Where Will the Ball FallMed.
1710.Maximum Units on a TruckEasy
1716.Calculate Money in Leetcode BankEasy
1717.Maximum Score From Removing SubstringsMed.
1718.Construct the Lexicographically Largest Valid SequenceMed.
1720.Decode XORed ArrayEasy
1721.Swapping Nodes in a Linked ListMed.
1725.Number Of Rectangles That Can Form The Largest SquareEasy
1726.Tuple with Same ProductMed.
1727.Largest Submatrix With RearrangementsMed.
1732.Find the Highest AltitudeEasy
1736.Latest Time by Replacing Hidden DigitsEasy
1742.Maximum Number of Balls in a BoxEasy
1743.Restore the Array From Adjacent PairsMed.
1748.Sum of Unique ElementsEasy
1749.Maximum Absolute Sum of Any SubarrayMed.
1750.Minimum Length of String After Deleting Similar EndsMed.
1751.Maximum Number of Events That Can Be Attended IIHard
1752.Check if Array Is Sorted and RotatedEasy
1758.Minimum Changes To Make Alternating Binary StringEasy
1759.Count Number of Homogenous SubstringsMed.
1760.Minimum Limit of Balls in a BagMed.
1763.Longest Nice SubstringEasy
1765.Map of Highest PeakMed.
1769.Minimum Number of Operations to Move All Balls to Each BoxMed.
1773.Count Items Matching a RuleEasy
1779.Find Nearest Point That Has the Same X or Y CoordinateEasy
1780.Check if Number is a Sum of Powers of ThreeMed.
1784.Check if Binary String Has at Most One Segment of OnesEasy
1790.Check if One String Swap Can Make Strings EqualEasy
1791.Find Center of Star GraphEasy
1792.Maximum Average Pass RatioMed.
1793.Maximum Score of a Good SubarrayHard
1796.Second Largest Digit in a StringEasy
1799.Maximize Score After N OperationsHard
1800.Maximum Ascending Subarray SumEasy
1805.Number of Different Integers in a StringEasy
1806.Minimum Number of Operations to Reinitialize a PermutationMed.
1812.Determine Color of a Chessboard SquareEasy
1813.Sentence Similarity IIIMed.
1814.Count Nice Pairs in an ArrayMed.
1816.Truncate SentenceEasy
1817.Finding the Users Active MinutesMed.
1822.Sign of the Product of an ArrayEasy
1823.Find the Winner of the Circular GameMed.
1827.Minimum Operations to Make the Array IncreasingEasy
1828.Queries on Number of Points Inside a CircleMed.
1829.Maximum XOR for Each QueryMed.
1832.Check if the Sentence Is PangramEasy
1833.Maximum Ice Cream BarsMed.
1834.Single-Threaded CPUMed.
1837.Sum of Digits in Base KEasy
1838.Frequency of the Most Frequent ElementMed.
1844.Replace All Digits with CharactersEasy
1845.Seat Reservation ManagerMed.
1846.Maximum Element After Decreasing and RearrangingMed.
1848.Minimum Distance to the Target ElementEasy
1854.Maximum Population YearEasy
1859.Sorting the SentenceEasy
1861.Rotating the BoxMed.
1863.Sum of All Subset XOR TotalsEasy
1869.Longer Contiguous Segments of Ones than ZerosEasy
1870.Minimum Speed to Arrive on TimeMed.
1876.Substrings of Size Three with Distinct CharactersEasy
1877.Minimize Maximum Pair Sum in ArrayMed.
1880.Check if Word Equals Summation of Two WordsEasy
1886.Determine Whether Matrix Can Be Obtained By RotationEasy
1887.Reduction Operations to Make the Array Elements EqualMed.
1893.Check if All the Integers in a Range Are CoveredEasy
1894.Find the Student that Will Replace the ChalkMed.
1897.Redistribute Characters to Make All Strings EqualEasy
1903.Largest Odd Number in StringEasy
1905.Count Sub IslandsMed.
1909.Remove One Element to Make the Array Strictly IncreasingEasy
1910.Remove All Occurrences of a SubstringMed.
1913.Maximum Product Difference Between Two PairsEasy
1915.Number of Wonderful SubstringsMed.
1920.Build Array from PermutationEasy
1921.Eliminate Maximum Number of MonstersMed.
1922.Count Good NumbersMed.
1925.Count Square Sum TriplesEasy
1926.Nearest Exit from Entrance in MazeMed.
1929.Concatenation of ArrayEasy
1930.Unique Length-3 Palindromic SubsequencesMed.
1935.Maximum Number of Words You Can TypeEasy
1937.Maximum Number of Points with CostMed.
1941.Check if All Characters Have Equal Number of OccurrencesEasy
1942.The Number of the Smallest Unoccupied ChairMed.
1945.Sum of Digits of String After ConvertEasy
1952.Three DivisorsEasy
1957.Delete Characters to Make Fancy StringEasy
1961.Check If String Is a Prefix of ArrayEasy
1962.Remove Stones to Minimize the TotalMed.
1963.Minimum Number of Swaps to Make the String BalancedMed.
1964.Find the Longest Valid Obstacle Course at Each PositionHard
1967.Number of Strings That Appear as Substrings in WordEasy
1971.Find if Path Exists in GraphEasy
1974.Minimum Time to Type Word Using Special TypewriterEasy
1975.Maximum Matrix SumMed.
1976.Number of Ways to Arrive at DestinationMed.
1979.Find Greatest Common Divisor of ArrayEasy
1980.Find Unique Binary StringMed.
1984.Minimum Difference Between Highest and Lowest of K ScoresEasy
1991.Find the Middle Index in ArrayEasy
1992.Find All Groups of FarmlandMed.
1995.Count Special QuadrupletsEasy
1996.The Number of Weak Characters in the GameMed.
2000.Reverse Prefix of WordEasy
2006.Count Number of Pairs With Absolute Difference KEasy
2009.Minimum Number of Operations to Make Array ContinuousHard
2011.Final Value of Variable After Performing OperationsEasy
2016.Maximum Difference Between Increasing ElementsEasy
2017.Grid GameMed.
2022.Convert 1D Array Into 2D ArrayEasy
2023.Number of Pairs of Strings With Concatenation Equal to TargetMed.
2024.Maximize the Confusion of an ExamMed.
2027.Minimum Moves to Convert StringEasy
2028.Find Missing ObservationsMed.
2032.Two Out of ThreeEasy
2033.Minimum Operations to Make a Uni-Value GridMed.
2037.Minimum Number of Moves to Seat EveryoneEasy
2042.Check if Numbers Are Ascending in a SentenceEasy
2044.Count Number of Maximum Bitwise-OR SubsetsMed.
2045.Second Minimum Time to Reach DestinationHard
2047.Number of Valid Words in a SentenceEasy
2050.Parallel Courses IIIHard
2053.Kth Distinct String in an ArrayEasy
2054.Two Best Non-Overlapping EventsMed.
2057.Smallest Index With Equal ValueEasy
2058.Find the Minimum and Maximum Number of Nodes Between Critical PointsMed.
2062.Count Vowel Substrings of a StringEasy
2064.Minimized Maximum of Products Distributed to Any StoreMed.
2068.Check Whether Two Strings are Almost EquivalentEasy
2070.Most Beautiful Item for Each QueryMed.
2073.Time Needed to Buy TicketsEasy
2078.Two Furthest Houses With Different ColorsEasy
2079.Watering PlantsMed.
2085.Count Common Words With One OccurrenceEasy
2089.Find Target Indices After Sorting ArrayEasy
2090.K Radius Subarray AveragesMed.
2092.Find All People With SecretHard
2094.Finding 3-Digit Even NumbersEasy
2096.Step-By-Step Directions From a Binary Tree Node to AnotherMed.
2097.Valid Arrangement of PairsHard
2099.Find Subsequence of Length K With the Largest SumEasy
2101.Detonate the Maximum BombsMed.
2103.Rings and RodsEasy
2108.Find First Palindromic String in the ArrayEasy
2109.Adding Spaces to a StringMed.
2114.Maximum Number of Words Found in SentencesEasy
2115.Find All Possible Recipes from Given SuppliesMed.
2116.Check if a Parentheses String Can Be ValidMed.
2119.A Number After a Double ReversalEasy
2120.Execution of All Suffix Instructions Staying in a GridMed.
2124.Check if All A's Appears Before All B'sEasy
2125.Number of Laser Beams in a BankMed.
2127.Maximum Employees to Be Invited to a MeetingHard
2129.Capitalize the TitleEasy
2130.Maximum Twin Sum of a Linked ListMed.
2131.Longest Palindrome by Concatenating Two Letter WordsMed.
2133.Check if Every Row and Column Contains All NumbersEasy
2134.Minimum Swaps to Group All 1's Together IIMed.
2136.Earliest Possible Day of Full BloomHard
2138.Divide a String Into Groups of Size kEasy
2140.Solving Questions With BrainpowerMed.
2141.Maximum Running Time of N ComputersHard
2144.Minimum Cost of Buying Candies With DiscountEasy
2145.Count the Hidden SequencesMed.
2147.Number of Ways to Divide a Long CorridorHard
2148.Count Elements With Strictly Smaller and Greater Elements Easy
2149.Rearrange Array Elements by SignMed.
2154.Keep Multiplying Found Values by TwoEasy
2160.Minimum Sum of Four Digit Number After Splitting DigitsEasy
2161.Partition Array According to Given PivotMed.
2164.Sort Even and Odd Indices IndependentlyEasy
2169.Count Operations to Obtain ZeroEasy
2176.Count Equal and Divisible Pairs in an ArrayEasy
2179.Count Good Triplets in an ArrayHard
2180.Count Integers With Even Digit SumEasy
2181.Merge Nodes in Between ZerosMed.
2182.Construct String With Repeat LimitMed.
2185.Counting Words With a Given PrefixEasy
2186.Minimum Number of Steps to Make Two Strings Anagram IIMed.
2187.Minimum Time to Complete TripsMed.
2190.Most Frequent Number Following Key In an ArrayEasy
2191.Sort the Jumbled NumbersMed.
2192.All Ancestors of a Node in a Directed Acyclic GraphMed.
2194.Cells in a Range on an Excel SheetEasy
2196.Create Binary Tree From DescriptionsMed.
2200.Find All K-Distant Indices in an ArrayEasy
2206.Divide Array Into Equal PairsEasy
2210.Count Hills and Valleys in an ArrayEasy
2215.Find the Difference of Two ArraysEasy
2220.Minimum Bit Flips to Convert NumberEasy
2221.Find Triangular Sum of an ArrayMed.
2224.Minimum Number of Operations to Convert TimeEasy
2225.Find Players With Zero or One LossesMed.
2226.Maximum Candies Allocated to K ChildrenMed.
2235.Add Two IntegersEasy
2236.Root Equals Sum of ChildrenEasy
2239.Find Closest Number to ZeroEasy
2243.Calculate Digit Sum of a StringEasy
2244.Minimum Rounds to Complete All TasksMed.
2246.Longest Path With Different Adjacent CharactersHard
2248.Intersection of Multiple ArraysEasy
2251.Number of Flowers in Full BloomHard
2255.Count Prefixes of a Given StringEasy
2256.Minimum Average DifferenceMed.
2257.Count Unguarded Cells in the GridMed.
2259.Remove Digit From Number to Maximize ResultEasy
2264.Largest 3-Same-Digit Number in StringEasy
2265.Count Nodes Equal to Average of SubtreeMed.
2269.Find the K-Beauty of a NumberEasy
2270.Number of Ways to Split ArrayMed.
2273.Find Resultant Array After Removing AnagramsEasy
2275.Largest Combination With Bitwise AND Greater Than ZeroMed.
2278.Percentage of Letter in StringEasy
2279.Maximum Bags With Full Capacity of RocksMed.
2283.Check if Number Has Equal Digit Count and Digit ValueEasy
2285.Maximum Total Importance of RoadsMed.
2287.Rearrange Characters to Make Target StringEasy
2290.Minimum Obstacle Removal to Reach CornerHard
2293.Min Max GameEasy
2294.Partition Array Such That Maximum Difference Is KMed.
2299.Strong Password Checker IIEasy
2303.Calculate Amount Paid in TaxesEasy
2309.Greatest English Letter in Upper and Lower CaseEasy
2315.Count AsterisksEasy
2317.Maximum XOR After Operations Med.
2319.Check if Matrix Is X-MatrixEasy
2325.Decode the MessageEasy
2326.Spiral Matrix IVMed.
2331.Evaluate Boolean Binary TreeEasy
2335.Minimum Amount of Time to Fill CupsEasy
2336.Smallest Number in Infinite SetMed.
2337.Move Pieces to Obtain a StringMed.
2338.Count the Number of Ideal ArraysHard
2341.Maximum Number of Pairs in ArrayEasy
2342.Max Sum of a Pair With Equal Sum of DigitsMed.
2347.Best Poker HandEasy
2349.Design a Number Container SystemMed.
2351.First Letter to Appear TwiceEasy
2352.Equal Row and Column PairsMed.
2357.Make Array Zero by Subtracting Equal AmountsEasy
2363.Merge Similar ItemsEasy
2364.Count Number of Bad PairsMed.
2366.Minimum Replacements to Sort the ArrayHard
2367.Number of Arithmetic TripletsEasy
2370.Longest Ideal SubsequenceMed.
2373.Largest Local Values in a MatrixEasy
2375.Construct Smallest Number From DI StringMed.
2379.Minimum Recolors to Get K Consecutive Black BlocksEasy
2381.Shifting Letters IIMed.
2383.Minimum Hours of Training to Win a CompetitionEasy
2385.Amount of Time for Binary Tree to Be InfectedMed.
2389.Longest Subsequence With Limited SumEasy
2390.Removing Stars From a StringMed.
2391.Minimum Amount of Time to Collect GarbageMed.
2392.Build a Matrix With ConditionsHard
2395.Find Subarrays With Equal SumEasy
2399.Check Distances Between Same LettersEasy
2401.Longest Nice SubarrayMed.
2402.Meeting Rooms IIIHard
2405.Optimal Partition of StringMed.
2406.Divide Intervals Into Minimum Number of GroupsMed.
2409.Count Days Spent TogetherEasy
2413.Smallest Even MultipleEasy
2415.Reverse Odd Levels of Binary TreeMed.
2416.Sum of Prefix Scores of StringsHard
2418.Sort the PeopleEasy
2419.Longest Subarray With Maximum Bitwise ANDMed.
2423.Remove Letter To Equalize FrequencyEasy
2425.Bitwise XOR of All PairingsMed.
2427.Number of Common FactorsEasy
2428.Maximum Sum of an HourglassMed.
2429.Minimize XORMed.
2432.The Employee That Worked on the Longest TaskEasy
2433.Find The Original Array of Prefix XorMed.
2437.Number of Valid Clock TimesEasy
2441.Largest Positive Integer That Exists With Its NegativeEasy
2442.Count Number of Distinct Integers After Reverse OperationsMed.
2444.Count Subarrays With Fixed BoundsHard
2446.Determine if Two Events Have ConflictEasy
2451.Odd String DifferenceEasy
2455.Average Value of Even Numbers That Are Divisible by ThreeEasy
2458.Height of Binary Tree After Subtree Removal QueriesHard
2460.Apply Operations to an ArrayEasy
2461.Maximum Sum of Distinct Subarrays With Length KMed.
2462.Total Cost to Hire K WorkersMed.
2463.Minimum Total Distance TraveledHard
2465.Number of Distinct AveragesEasy
2466.Count Ways To Build Good StringsMed.
2467.Most Profitable Path in a TreeMed.
2469.Convert the TemperatureEasy
2471.Minimum Number of Operations to Sort a Binary Tree by LevelMed.
2475.Number of Unequal Triplets in ArrayEasy
2481.Minimum Cuts to Divide a CircleEasy
2482.Difference Between Ones and Zeros in Row and ColumnMed.
2483.Minimum Penalty for a ShopMed.
2485.Find the Pivot IntegerEasy
2486.Append Characters to String to Make SubsequenceMed.
2487.Remove Nodes From Linked ListMed.
2490.Circular SentenceEasy
2491.Divide Players Into Teams of Equal SkillMed.
2493.Divide Nodes Into the Maximum Number of GroupsHard
2496.Maximum Value of a String in an ArrayEasy
2500.Delete Greatest Value in Each RowEasy
2501.Longest Square Streak in an ArrayMed.
2503.Maximum Number of Points From Grid QueriesHard
2506.Count Pairs Of Similar StringsEasy
2511.Maximum Enemy Forts That Can Be CapturedEasy
2515.Shortest Distance to Target String in a Circular ArrayEasy
2516.Take K of Each Character From Left and RightMed.
2520.Count the Digits That Divide a NumberEasy
2523.Closest Prime Numbers in RangeMed.
2525.Categorize Box According to CriteriaEasy
2529.Maximum Count of Positive Integer and Negative IntegerEasy
2530.Maximal Score After Applying K OperationsMed.
2535.Difference Between Element Sum and Digit Sum of an ArrayEasy
2537.Count the Number of Good SubarraysMed.
2540.Minimum Common ValueEasy
2542.Maximum Subsequence ScoreMed.
2544.Alternating Digit SumEasy
2545.Sort the Students by Their Kth ScoreMed.
2549.Count Distinct Numbers on BoardEasy
2551.Put Marbles in BagsHard
2553.Separate the Digits in an ArrayEasy
2554.Maximum Number of Integers to Choose From a Range IMed.
2558.Take Gifts From the Richest PileEasy
2559.Count Vowel Strings in RangesMed.
2560.House Robber IVMed.
2562.Find the Array Concatenation ValueEasy
2563.Count the Number of Fair PairsMed.
2566.Maximum Difference by Remapping a DigitEasy
2570.Merge Two 2D Arrays by Summing ValuesEasy
2574.Left and Right Sum DifferencesEasy
2577.Minimum Time to Visit a Cell In a GridHard
2578.Split With Minimum SumEasy
2579.Count Total Number of Colored CellsMed.
2582.Pass the PillowEasy
2583.Kth Largest Sum in a Binary TreeMed.
2586.Count the Number of Vowel Strings in RangeEasy
2591.Distribute Money to Maximum ChildrenEasy
2593.Find Score of an Array After Marking All ElementsMed.
2594.Minimum Time to Repair CarsMed.
2595.Number of Even and Odd BitsEasy
2597.The Number of Beautiful SubsetsMed.
2600.K Items With the Maximum SumEasy
2601.Prime Subtraction OperationMed.
2605.Form Smallest Number From Two Digit ArraysEasy
2609.Find the Longest Balanced Substring of a Binary StringEasy
2610.Convert an Array Into a 2D Array With ConditionsMed.
2614.Prime In DiagonalEasy
2618.Check if Object Instance of ClassMed.
2619.Array Prototype LastEasy
2621.SleepEasy
2622.Cache With Time LimitMed.
2623.MemoizeMed.
2624.Snail TraversalMed.
2625.Flatten Deeply Nested ArrayMed.
2626.Array Reduce TransformationEasy
2627.DebounceMed.
2628.JSON Deep EqualMed.
2629.Function CompositionEasy
2631.Group ByMed.
2632.CurryMed.
2633.Convert Object to JSON StringMed.
2634.Filter Elements from ArrayEasy
2635.Apply Transform Over Each Element in ArrayEasy
2636.Promise PoolMed.
2637.Promise Time LimitMed.
2639.Find the Width of Columns of a GridEasy
2640.Find the Score of All Prefixes of an ArrayMed.
2641.Cousins in Binary Tree IIMed.
2642.Design Graph With Shortest Path CalculatorHard
2643.Row With Maximum OnesEasy
2644.Find the Maximum Divisibility ScoreEasy
2648.Generate Fibonacci SequenceEasy
2649.Nested Array GeneratorMed.
2651.Calculate Delayed Arrival TimeEasy
2652.Sum MultiplesEasy
2656.Maximum Sum With Exactly K Elements Easy
2657.Find the Prefix Common Array of Two ArraysMed.
2658.Maximum Number of Fish in a GridMed.
2660.Determine the Winner of a Bowling GameEasy
2661.First Completely Painted Row or ColumnMed.
2666.Allow One Function CallEasy
2670.Find the Distinct Difference ArrayEasy
2675.Array of Objects to MatrixHard
2676.ThrottleMed.
2677.Chunk ArrayEasy
2678.Number of Senior CitizensEasy
2682.Find the Losers of the Circular GameEasy
2683.Neighboring Bitwise XORMed.
2684.Maximum Number of Moves in a GridMed.
2685.Count the Number of Complete ComponentsMed.
2693.Call Function with Custom ContextMed.
2694.Event EmitterMed.
2695.Array WrapperEasy
2696.Minimum String Length After Removing SubstringsEasy
2697.Lexicographically Smallest PalindromeEasy
2698.Find the Punishment Number of an IntegerMed.
2700.Differences Between Two ObjectsMed.
2706.Buy Two ChocolatesEasy
2707.Extra Characters in a StringMed.
2709.Greatest Common Divisor TraversalHard
2710.Remove Trailing Zeros From a StringEasy
2716.Minimize String LengthEasy
2717.Semi-Ordered PermutationEasy
2721.Execute Asynchronous Functions in ParallelMed.
2722.Join Two Arrays by IDMed.
2723.Add Two PromisesEasy
2724.Sort ByEasy
2725.Interval CancellationEasy
2726.Calculator with Method ChainingEasy
2727.Is Object EmptyEasy
2729.Check if The Number is FascinatingEasy
2733.Neither Minimum nor MaximumEasy
2739.Total Distance TraveledEasy
2742.Painting the WallsHard
2744.Find Maximum Number of String PairsEasy
2748.Number of Beautiful PairsEasy
2751.Robot CollisionsHard
2760.Longest Even Odd Subarray With ThresholdEasy
2762.Continuous SubarraysMed.
2765.Longest Alternating SubarrayEasy
2769.Find the Maximum Achievable NumberEasy
2778.Sum of Squares of Special Elements Easy
2779.Maximum Beauty of an Array After Applying OperationMed.
2780.Minimum Index of a Valid SplitMed.
2784.Check if Array is GoodEasy
2785.Sort Vowels in a StringMed.
2788.Split Strings by SeparatorEasy
2798.Number of Employees Who Met the TargetEasy
2799.Count Complete Subarrays in an ArrayMed.
2806.Account Balance After Rounded PurchaseEasy
2807.Insert Greatest Common Divisors in Linked ListMed.
2810.Faulty KeyboardEasy
2812.Find the Safest Path in a GridMed.
2815.Max Pair Sum in an ArrayEasy
2816.Double a Number Represented as a Linked ListMed.
2818.Apply Operations to Maximize ScoreHard
2824.Count Pairs Whose Sum is Less than TargetEasy
2825.Make String a Subsequence Using Cyclic IncrementsMed.
2828.Check if a String Is an Acronym of WordsEasy
2833.Furthest Point From OriginEasy
2839.Check if Strings Can be Made Equal With Operations IEasy
2843.Count Symmetric IntegersEasy
2845.Count of Interesting SubarraysMed.
2848.Points That Intersect With CarsEasy
2849.Determine if a Cell Is Reachable at a Given TimeMed.
2855.Minimum Right Shifts to Sort the ArrayEasy
2859.Sum of Values at Indices With K Set BitsEasy
2864.Maximum Odd Binary NumberEasy
2869.Minimum Operations to Collect ElementsEasy
2870.Minimum Number of Operations to Make Array EmptyMed.
2872.Maximum Number of K-Divisible ComponentsHard
2873.Maximum Value of an Ordered Triplet IEasy
2874.Maximum Value of an Ordered Triplet IIMed.
2894.Divisible and Non-divisible Sums DifferenceEasy
2899.Last Visited IntegersEasy
2900.Longest Unequal Adjacent Groups Subsequence IEasy
2903.Find Indices With Index and Value Difference IEasy
2908.Minimum Sum of Mountain Triplets IEasy
2913.Subarrays Distinct Element Sum of Squares IEasy
2914.Minimum Number of Changes to Make Binary String BeautifulMed.
2917.Find the K-or of an ArrayEasy
2923.Find Champion IEasy
2924.Find Champion IIMed.
2928.Distribute Candies Among Children IEasy
2932.Maximum Strong Pair XOR IEasy
2937.Make Three Strings EqualEasy
2938.Separate Black and White BallsMed.
2940.Find Building Where Alice and Bob Can MeetHard
2942.Find Words Containing CharacterEasy
2946.Matrix Similarity After Cyclic ShiftsEasy
2948.Make Lexicographically Smallest Array by Swapping ElementsMed.
2951.Find the PeaksEasy
2956.Find Common Elements Between Two ArraysEasy
2958.Length of Longest Subarray With at Most K FrequencyMed.
2960.Count Tested Devices After Test OperationsEasy
2962.Count Subarrays Where Max Element Appears at Least K TimesMed.
2965.Find Missing and Repeated ValuesEasy
2966.Divide Array Into Arrays With Max DifferenceMed.
2970.Count the Number of Incremovable Subarrays IEasy
2971.Find Polygon With the Largest PerimeterMed.
2974.Minimum Number GameEasy
2976.Minimum Cost to Convert String IMed.
2980.Check if Bitwise OR Has Trailing ZerosEasy
2981.Find Longest Special Substring That Occurs Thrice IMed.
2996.Smallest Missing Integer Greater Than Sequential Prefix SumEasy
2997.Minimum Number of Operations to Make Array XOR Equal to KMed.
2999.Count the Number of Powerful IntegersHard
3000.Maximum Area of Longest Diagonal RectangleEasy
3005.Count Elements With Maximum FrequencyEasy
3010.Divide an Array Into Subarrays With Minimum Cost IEasy
3011.Find if Array Can Be SortedMed.
3014.Minimum Number of Pushes to Type Word IEasy
3016.Minimum Number of Pushes to Type Word IIMed.
3019.Number of Changing KeysEasy
3024.Type of TriangleEasy
3028.Ant on the BoundaryEasy
3033.Modify the MatrixEasy
3038.Maximum Number of Operations With the Same Score IEasy
3042.Count Prefix and Suffix Pairs IEasy
3043.Find the Length of the Longest Common PrefixMed.
3045.Count Prefix and Suffix Pairs IIHard
3046.Split the ArrayEasy
3065.Minimum Operations to Exceed Threshold Value IEasy
3066.Minimum Operations to Exceed Threshold Value IIMed.
3068.Find the Maximum Sum of Node ValuesHard
3069.Distribute Elements Into Two Arrays IEasy
3074.Apple Redistribution into BoxesEasy
3075.Maximize Happiness of Selected ChildrenMed.
3079.Find the Sum of Encrypted IntegersEasy
3083.Existence of a Substring in a String and Its ReverseEasy
3090.Maximum Length Substring With Two OccurrencesEasy
3095.Shortest Subarray With OR at Least K IEasy
3097.Shortest Subarray With OR at Least K IIMed.
3099.Harshad NumberEasy
3105.Longest Strictly Increasing or Strictly Decreasing SubarrayEasy
3108.Minimum Cost Walk in Weighted GraphHard
3110.Score of a StringEasy
3114.Latest Time You Can Obtain After Replacing CharactersEasy
3120.Count the Number of Special Characters IEasy
3127.Make a Square with the Same ColorEasy
3131.Find the Integer Added to Array IEasy
3136.Valid WordEasy
3142.Check if Grid Satisfies ConditionsEasy
3146.Permutation Difference between Two StringsEasy
3151.Special Array IEasy
3152.Special Array IIMed.
3158.Find the XOR of Numbers Which Appear TwiceEasy
3159.Find Occurrences of an Element in an ArrayMed.
3160.Find the Number of Distinct Colors Among the BallsMed.
3162.Find the Number of Good Pairs IEasy
3163.String Compression IIIMed.
3168.Minimum Number of Chairs in a Waiting RoomEasy
3169.Count Days Without MeetingsMed.
3174.Clear DigitsEasy
3178.Find the Child Who Has the Ball After K SecondsEasy
3184.Count Pairs That Form a Complete Day IEasy
3190.Find Minimum Operations to Make All Elements Divisible by ThreeEasy
3191.Minimum Operations to Make Binary Array Elements Equal to One IMed.
3194.Minimum Average of Smallest and Largest ElementsEasy
3195.Find the Minimum Area to Cover All Ones IMed.
3200.Maximum Height of a TriangleEasy
3203.Find Minimum Diameter After Merging Two TreesHard
3206.Alternating Groups IEasy
3208.Alternating Groups IIMed.
3210.Find the Encrypted StringEasy
3211.Generate Binary Strings Without Adjacent ZerosMed.
3216.Lexicographically Smallest String After a SwapEasy
3217.Delete Nodes From Linked List Present in ArrayMed.
3222.Find the Winning Player in Coin GameEasy
3223.Minimum Length of String After OperationsMed.
3226.Number of Bit Changes to Make Two Integers EqualEasy
3232.Find if Digit Game Can Be WonEasy
3238.Find the Number of Winning PlayersEasy
3239.Minimum Number of Flips to Make Binary Grid Palindromic IMed.
3242.Design Neighbor Sum ServiceEasy
3243.Shortest Distance After Road Addition Queries IMed.
3248.Snake in MatrixEasy
3254.Find the Power of K-Size Subarrays IMed.
3258.Count Substrings That Satisfy K-Constraint IEasy
3264.Final Array State After K Multiplication Operations IEasy
3270.Find the Key of the NumbersEasy
3271.Hash Divided StringMed.
3272.Find the Count of Good IntegersHard
3274.Check if Two Chessboard Squares Have the Same ColorEasy
3280.Convert Date to BinaryEasy
3285.Find Indices of Stable MountainsEasy
3289.The Two Sneaky Numbers of DigitvilleEasy
3300.Minimum Element After Replacement With Digit SumEasy
3304.Find the K-th Character in String Game IEasy
3306.Count of Substrings Containing Every Vowel and K Consonants IIMed.
3314.Construct the Minimum Bitwise Array IEasy
3318.Find X-Sum of All K-Long Subarrays IEasy
3324.Find the Sequence of Strings Appeared on the ScreenMed.
3330.Find the Original Typed String IEasy
3340.Check Balanced StringEasy
3345.Smallest Divisible Digit Product IEasy
3349.Adjacent Increasing Subarrays Detection IEasy
3354.Make Array Elements Equal to ZeroEasy
3356.Zero Array Transformation IIMed.
3360.Stone Removal GameEasy
3364.Minimum Positive Sum Subarray Easy
3370.Smallest Number With All Set BitsEasy
3375.Minimum Operations to Make Array Values Equal to KEasy
3379.Transformed ArrayEasy
3386.Button with Longest Push TimeEasy
3392.Count Subarrays of Length Three With a ConditionEasy
3394.Check if Grid can be Cut into SectionsMed.
3396.Minimum Number of Operations to Make Elements in Array DistinctEasy
3402.Minimum Operations to Make Columns Strictly IncreasingEasy
3407.Substring Matching PatternEasy
3417.Zigzag Grid Traversal With SkipEasy
3423.Maximum Difference Between Adjacent Elements in a Circular ArrayEasy
3427.Sum of Variable Length SubarraysEasy
3432.Count Partitions with Even Sum DifferenceEasy
3438.Find Valid Pair of Adjacent Digits in StringEasy
3442.Maximum Difference Between Even and Odd Frequency IEasy