中文Problems#TitleLanguages1Two Sum 2Add Two Numbers 3Longest Substring Without Repeating Characters4Median of Two Sorted Arrays5Longest Palindromic Substring6ZigZag Conversion7Reverse Integer 8String to Integer (atoi)9Palindrome Number 10Regular Expression Matching11Container With Most Water 12Integer to Roman 13Roman to Integer14Longest Common Prefix153Sum163Sum Closest17Letter Combinations of a Phone Number184Sum19Remove Nth Node From End of List 20Valid Parentheses21Merge Two Sorted Lists22Generate Parentheses23Merge k Sorted Lists24Swap Nodes in Pairs25Reverse Nodes in k-Group26Remove Duplicates from Sorted Array27Remove Element 28Implement strStr()29Divide Two Integers31Next Permutation33Search in Rotated Sorted Array34Find First and Last Position of Element in Sorted Array35Search Insert Position36Valid Sudoku37Sudoku Solver38Count and Say 39Combination Sum41First Missing Positive42Trapping Rain Water43Multiply Strings44Wildcard Matching45Jump Game II46Permutations47Permutations II48Rotate Image49Group Anagrams50Pow(x, n)51N-Queens52N-Queens II53Maximum Subarray54Spiral Matrix55Jump Game 56Merge Intervals57Insert Interval 58Length of Last Word59Spiral Matrix II60Permutation Sequence61Rotate List62Unique Paths63Unique Paths II64Minimum Path Sum 65Valid Number66Plus One67Add Binary68Text Justification69Sqrt(x)70Climbing Stairs71Simplify Path72Edit Distance73Set Matrix Zeroes74Search a 2D Matrix75Sort Colors76Minimum Window Substring77Combinations78Subsets79Word Search80Remove Duplicates from Sorted Array II81Search in Rotated Sorted Array II82Remove Duplicates from Sorted List II83Remove Duplicates from Sorted List84Largest Rectangle in Histogram85Maximal Rectangle86Partition List87Scramble String88Merge Sorted Array 89Gray Code90Subsets II91Decode Ways 92Reverse Linked List II93Restore IP Addresses94Binary Tree Inorder Traversal 95Unique Binary Search Trees II96Unique Binary Search Trees 98Validate Binary Search Tree100Same Tree101Symmetric Tree102Binary Tree Level Order Traversal103Binary Tree Zigzag Level Order Traversal104Maximum Depth of Binary Tree105Construct Binary Tree from Preorder and Inorder Traversal106Construct Binary Tree from Inorder and Postorder Traversal107Binary Tree Level Order Traversal II108Convert Sorted Array to Binary Search Tree109Convert Sorted List to Binary Search Tree110Balanced Binary Tree111Minimum Depth of Binary Tree112Path Sum113Path Sum II114Flatten Binary Tree to Linked List 115Distinct Subsequences116Populating Next Right Pointers in Each Node117Populating Next Right Pointers in Each Node II118Pascal's Triangle119Pascal's Triangle II120Triangle121Best Time to Buy and Sell Stock122Best Time to Buy and Sell Stock II123Best Time to Buy and Sell Stock III124Binary Tree Maximum Path Sum125Valid Palindrome128Longest Consecutive Sequence129Sum Root to Leaf Numbers130Surrounded Regions131Palindrome Partitioning133Clone Graph134Gas Station 135Candy136Single Number137Single Number II138Copy List with Random Pointer139Word Break 140Word Break II141Linked List Cycle142Linked List Cycle II143Reorder List144Binary Tree Preorder Traversal145Binary Tree Postorder Traversal146LRU Cache147Insertion Sort List149Max Points on a Line150Evaluate Reverse Polish Notation151Reverse Words in a String152Maximum Product Subarray153Find Minimum in Rotated Sorted Array 154Find Minimum in Rotated Sorted Array II155Min Stack160Intersection of Two Linked Lists162Find Peak Element164Maximum Gap165Compare Version Numbers166Fraction to Recurring Decimal167Two Sum II - Input array is sorted168Excel Sheet Column Title 169Majority Element171Excel Sheet Column Number172Factorial Trailing Zeroes173Binary Search Tree Iterator179Largest Number187Repeated DNA Sequences 188Best Time to Buy and Sell Stock IV189Rotate Array190Reverse Bits191Number of 1 Bits198House Robber199Binary Tree Right Side View200Number of Islands201Bitwise AND of Numbers Range202Happy Number 203Remove Linked List Elements204Count Primes205Isomorphic Strings206Reverse Linked List207Course Schedule208Implement Trie (Prefix Tree)209Minimum Size Subarray Sum210Course Schedule II211Design Add and Search Words Data Structure212Word Search II213House Robber II215Kth Largest Element in an Array216Combination Sum III217Contains Duplicate219Contains Duplicate II220Contains Duplicate III221Maximal Square222Count Complete Tree Nodes223Rectangle Area 224Basic Calculator225Implement Stack using Queues226Invert Binary Tree227Basic Calculator II228Summary Ranges229Majority Element II230Kth Smallest Element in a BST231Power of Two232Implement Queue using Stacks233Number of Digit One234Palindrome Linked List235Lowest Common Ancestor of a Binary Search Tree236Lowest Common Ancestor of a Binary Tree237Delete Node in a Linked List238Product of Array Except Self239Sliding Window Maximum240Search a 2D Matrix II 242Valid Anagram257Binary Tree Paths258Add Digits260Single Number III263Ugly Number 264Ugly Number II268Missing Number273Integer to English Words274H-Index275H-Index II278First Bad Version279Perfect Squares283Move Zeroes284Peeking Iterator287Find the Duplicate Number289Game of Life290Word Pattern292Nim Game 295Find Median from Data Stream297Serialize and Deserialize Binary Tree299Bulls and Cows300Longest Increasing Subsequence303Range Sum Query - Immutable304Range Sum Query 2D - Immutable306Additive Number 309Best Time to Buy and Sell Stock with Cooldown312Burst Balloons313Super Ugly Number315Count of Smaller Numbers After Self316Remove Duplicate Letters318Maximum Product of Word Lengths319Bulb Switcher322Coin Change326Power of Three327Count of Range Sum328Odd Even Linked List329Longest Increasing Path in a Matrix331Verify Preorder Serialization of a Binary Tree332Reconstruct Itinerary334Increasing Triplet Subsequence 337House Robber III 338Counting Bits341Flatten Nested List Iterator342Power of Four343Integer Break344Reverse String345Reverse Vowels of a String 347Top K Frequent Elements349Intersection of Two Arrays350Intersection of Two Arrays II352Data Stream as Disjoint Intervals354Russian Doll Envelopes355Design Twitter357Count Numbers with Unique Digits365Water and Jug Problem367Valid Perfect Square368Largest Divisible Subset371Sum of Two Integers372Super Pow373Find K Pairs with Smallest Sums374Guess Number Higher or Lower375Guess Number Higher or Lower II380Insert Delete GetRandom O(1)381Insert Delete GetRandom O(1) - Duplicates allowed382Linked List Random Node383Ransom Note384Shuffle an Array386Lexicographical Numbers387First Unique Character in a String 389Find the Difference390Elimination Game391Perfect Rectangle392Is Subsequence393UTF-8 Validation394Decode String395Longest Substring with At Least K Repeating Characters396Rotate Function397Integer Replacement398Random Pick Index399Evaluate Division400Nth Digit401Binary Watch402Remove K Digits403Frog Jump404Sum of Left Leaves405Convert a Number to Hexadecimal406Queue Reconstruction by Height409Longest Palindrome410Split Array Largest Sum412Fizz Buzz413Arithmetic Slices 414Third Maximum Number415Add Strings416Partition Equal Subset Sum 417Pacific Atlantic Water Flow419Battleships in a Board421Maximum XOR of Two Numbers in an Array423Reconstruct Original Digits from English424Longest Repeating Character Replacement427Construct Quad Tree429N-ary Tree Level Order Traversal 430Flatten a Multilevel Doubly Linked List432All O`one Data Structure433Minimum Genetic Mutation 434Number of Segments in a String435Non-overlapping Intervals436Find Right Interval 437Path Sum III438Find All Anagrams in a String 441Arranging Coins442Find All Duplicates in an Array443String Compression445Add Two Numbers II446Arithmetic Slices II - Subsequence447Number of Boomerangs448Find All Numbers Disappeared in an Array449Serialize and Deserialize BST450Delete Node in a BST 451Sort Characters By Frequency452Minimum Number of Arrows to Burst Balloons 453Minimum Moves to Equal Array Elements4544Sum II455Assign Cookies 456132 Pattern459Repeated Substring Pattern460LFU Cache461Hamming Distance462Minimum Moves to Equal Array Elements II463Island Perimeter464Can I Win467Unique Substrings in Wraparound String 468Validate IP Address470Implement Rand10() Using Rand7()473Matchsticks to Square474Ones and Zeroes475Heaters476Number Complement477Total Hamming Distance 478Generate Random Point in a Circle480Sliding Window Median481Magical String482License Key Formatting483Smallest Good Base485Max Consecutive Ones486Predict the Winner488Zuma Game492Construct the Rectangle493Reverse Pairs494Target Sum 495Teemo Attacking496Next Greater Element I497Random Point in Non-overlapping Rectangles498Diagonal Traverse500Keyboard Row501Find Mode in Binary Search Tree502IPO503Next Greater Element II504Base 7506Relative Ranks507Perfect Number 508Most Frequent Subtree Sum509Fibonacci Number513Find Bottom Left Tree Value514Freedom Trail515Find Largest Value in Each Tree Row516Longest Palindromic Subsequence518Coin Change 2519Random Flip Matrix520Detect Capital521Longest Uncommon Subsequence I 522Longest Uncommon Subsequence II523Continuous Subarray Sum524Longest Word in Dictionary through Deleting525Contiguous Array 526Beautiful Arrangement528Random Pick with Weight529Minesweeper530Minimum Absolute Difference in BST532K-diff Pairs in an Array535Encode and Decode TinyURL537Complex Number Multiplication538Convert BST to Greater Tree539Minimum Time Difference540Single Element in a Sorted Array541Reverse String II54201 Matrix543Diameter of Binary Tree547Number of Provinces 551Student Attendance Record I552Student Attendance Record II553Optimal Division554Brick Wall556Next Greater Element III557Reverse Words in a String III 558Quad Tree Intersection559Maximum Depth of N-ary Tree560Subarray Sum Equals K561Array Partition I563Binary Tree Tilt564Find the Closest Palindrome565Array Nesting 566Reshape the Matrix567Permutation in String 572Subtree of Another Tree575Distribute Candies576Out of Boundary Paths581Shortest Unsorted Continuous Subarray583Delete Operation for Two Strings587Erect the Fence589N-ary Tree Preorder Traversal590N-ary Tree Postorder Traversal591Tag Validator592Fraction Addition and Subtraction593Valid Square594Longest Harmonious Subsequence598Range Addition II 599Minimum Index Sum of Two Lists605Can Place Flowers606Construct String from Binary Tree609Find Duplicate File in System611Valid Triangle Number617Merge Two Binary Trees621Task Scheduler622Design Circular Queue623Add One Row to Tree624Maximum Distance in Arrays628Maximum Product of Three Numbers629K Inverse Pairs Array633Sum of Square Numbers636Exclusive Time of Functions637Average of Levels in Binary Tree639Decode Ways II640Solve the Equation641Design Circular Deque643Maximum Average Subarray I645Set Mismatch646Maximum Length of Pair Chain647Palindromic Substrings648Replace Words6502 Keys Keyboard652Find Duplicate Subtrees653Two Sum IV - Input is a BST654Maximum Binary Tree 655Print Binary Tree657Robot Return to Origin 658Find K Closest Elements659Split Array into Consecutive Subsequences661Image Smoother662Maximum Width of Binary Tree665Non-decreasing Array668Kth Smallest Number in Multiplication Table669Trim a Binary Search Tree670Maximum Swap671Second Minimum Node In a Binary Tree672Bulb Switcher II673Number of Longest Increasing Subsequence674Longest Continuous Increasing Subsequence675Cut Off Trees for Golf Event676Implement Magic Dictionary677Map Sum Pairs67924 Game680Valid Palindrome II682Baseball Game686Repeated String Match687Longest Univalue Path688Knight Probability in Chessboard 689Maximum Sum of 3 Non-Overlapping Subarrays690Employee Importance692Top K Frequent Words693Binary Number with Alternating Bits695Max Area of Island 696Count Binary Substrings 697Degree of an Array699Falling Squares700Search in a Binary Search Tree701Insert into a Binary Search Tree703Kth Largest Element in a Stream704Binary Search705Design HashSet706Design HashMap707Design Linked List709To Lower Case710Random Pick with Blacklist712Minimum ASCII Delete Sum for Two Strings713Subarray Product Less Than K 714Best Time to Buy and Sell Stock with Transaction Fee7171-bit and 2-bit Characters718Maximum Length of Repeated Subarray719Find K-th Smallest Pair Distance720Longest Word in Dictionary721Accounts Merge722Remove Comments724Find Pivot Index 725Split Linked List in Parts728Self Dividing Numbers729My Calendar I731My Calendar II733Flood Fill735Asteroid Collision738Monotone Increasing Digits739Daily Temperatures740Delete and Earn743Network Delay Time744Find Smallest Letter Greater Than Target745Prefix and Suffix Search746Min Cost Climbing Stairs747Largest Number At Least Twice of Others748Shortest Completing Word752Open the Lock 754Reach a Number757Set Intersection Size At Least Two762Prime Number of Set Bits in Binary Representation763Partition Labels764Largest Plus Sign765Couples Holding Hands766Toeplitz Matrix767Reorganize String768Max Chunks To Make Sorted II769Max Chunks To Make Sorted 771Jewels and Stones773Sliding Puzzle775Global and Local Inversions 778Swim in Rising Water779K-th Symbol in Grammar781Rabbits in Forest 783Minimum Distance Between BST Nodes784Letter Case Permutation785Is Graph Bipartite?786K-th Smallest Prime Fraction787Cheapest Flights Within K Stops788Rotated Digits789Escape The Ghosts 790Domino and Tromino Tiling791Custom Sort String792Number of Matching Subsequences793[Preimage Size of Factorial Zeroes Function]794Valid Tic-Tac-Toe State795Number of Subarrays with Bounded Maximum796Rotate String797All Paths From Source to Target798Smallest Rotation with Highest Score799Champagne Tower801Minimum Swaps To Make Sequences Increasing804Unique Morse Code Words805Split Array With Same Average806Number of Lines To Write String807Max Increase to Keep City Skyline808Soup Servings809Expressive Words810Chalkboard XOR Game811Subdomain Visit Count812Largest Triangle Area813Largest Sum of Averages814Binary Tree Pruning 815Bus Routes816Ambiguous Coordinates817Linked List Components 819Most Common Word820Short Encoding of Words821Shortest Distance to a Character822Card Flipping Game823Binary Trees With Factors824Goat Latin825Friends Of Appropriate Ages826Most Profit Assigning Work828Count Unique Characters of All Substrings of a Given String829Consecutive Numbers Sum830Positions of Large Groups831Masking Personal Information832Flipping an Image833Find And Replace in String836Rectangle Overlap838Push Dominoes 839Similar String Groups840Magic Squares In Grid841Keys and Rooms842Split Array into Fibonacci Sequence844Backspace String Compare845Longest Mountain in Array846Hand of Straights847Shortest Path Visiting All Nodes848Shifting Letters849Maximize Distance to Closest Person851Loud and Rich852Peak Index in a Mountain Array853Car Fleet856Score of Parentheses857Minimum Cost to Hire K Workers858Mirror Reflection 859Buddy Strings860Lemonade Change861Score After Flipping Matrix862Shortest Subarray with Sum at Least K863All Nodes Distance K in Binary Tree865Smallest Subtree with all the Deepest Nodes866Prime Palindrome867Transpose Matrix868Binary Gap869Reordered Power of 2870Advantage Shuffle 871Minimum Number of Refueling Stops872Leaf-Similar Trees873Length of Longest Fibonacci Subsequence874Walking Robot Simulation875Koko Eating Bananas 876Middle of the Linked List877Stone Game878Nth Magical Number879Profitable Schemes880Decoded String at Index881Boats to Save People883Projection Area of 3D Shapes884Uncommon Words from Two Sentences885Spiral Matrix III888Fair Candy Swap889Construct Binary Tree from Preorder and Postorder Traversal890Find and Replace Pattern891Sum of Subsequence Widths892Surface Area of 3D Shapes 893Groups of Special-Equivalent Strings894All Possible Full Binary Trees895Maximum Frequency Stack896Monotonic Array897Increasing Order Search Tree899Orderly Queue900RLE Iterator901Online Stock Span902Numbers At Most N Given Digit Set904Fruit Into Baskets905Sort Array By Parity907Sum of Subarray Minimums908Smallest Range I909Snakes and Ladders910Smallest Range II911Online Election912Sort an Array914X of a Kind in a Deck of Cards915Partition Array into Disjoint Intervals 916Word Subsets 917Reverse Only Letters918Maximum Sum Circular Subarray919Complete Binary Tree Inserter920Number of Music Playlists921Minimum Add to Make Parentheses Valid922Sort Array By Parity II9233Sum With Multiplicity924Minimize Malware Spread925Long Pressed Name926Flip String to Monotone Increasing927Three Equal Parts929Unique Email Addresses 930Binary Subarrays With Sum931Minimum Falling Path Sum933Number of Recent Calls934Shortest Bridge935Knight Dialer 937Reorder Data in Log Files938Range Sum of BST939Minimum Area Rectangle 941Valid Mountain Array942DI String Match944Delete Columns to Make Sorted945Minimum Increment to Make Array Unique 946Validate Stack Sequences 948Bag of Tokens 949Largest Time for Given Digits950Reveal Cards In Increasing Order951Flip Equivalent Binary Trees953Verifying an Alien Dictionary954Array of Doubled Pairs956Tallest Billboard957Prison Cells After N Days958Check Completeness of a Binary Tree961N-Repeated Element in Size 2N Array962Maximum Width Ramp963Minimum Area Rectangle II965Univalued Binary Tree966Vowel Spellchecker967Numbers With Same Consecutive Differences 968Binary Tree Cameras969Pancake Sorting970Powerful Integers973K Closest Points to Origin974Subarray Sums Divisible by K 975Odd Even Jump976Largest Perimeter Triangle977Squares of a Sorted Array978Longest Turbulent Subarray979Distribute Coins in Binary Tree980Unique Paths III981Time Based Key-Value Store982Triples with Bitwise AND Equal To Zero983Minimum Cost For Tickets984String Without AAA or BBB985Sum of Even Numbers After Queries986Interval List Intersections 987Vertical Order Traversal of a Binary Tree988Smallest String Starting From Leaf989Add to Array-Form of Interger990Satisfiability of Equality Equations991Broken Calculator993Cousins in Binary Tree994Rotting Oranges997Find the Town Judge998Maximum Binary Tree II 999Available Captures for Rook1001Grid Illumination1002Find Common Characters1003Check If Word Is Valid After Substitutions1004Max Consecutive Ones III1005Maximize Sum Of Array After K Negations1006Clumsy Factorial 1007Minimum Domino Rotations For Equal Row1008Construct Binary Search Tree from Preorder Traversal1009Complement of Base 10 Integer1010Pairs of Songs With Total Durations Divisible by 601011Capacity To Ship Packages Within D Days1012Numbers With Repeated Digits1013Partition Array Into Three Parts With Equal Sum1014Best Sightseeing Pair1015Smallest Integer Divisible by K1016Binary String With Substrings Representing 1 To N1017Convert to Base -21018Binary Prefix Divisible By 51019Next Greater Node In Linked List 1020Number of Enclaves1021Remove Outermost Parentheses1022Sum of Root To Leaf Binary Numbers1023Camelcase Matching1024Video Stitching1025Divisor Game1026Maximum Difference Between Node and Ancestor1027Longest Arithmetic Subsequence1028Recover a Tree From Preorder Traversal1029Two City Scheduling1030Matrix Cells in Distance Order1031Maximum Sum of Two Non-Overlapping Subarrays1033Moving Stones Until Consecutive 1034Coloring A Border1035Uncrossed Lines1037Valid Boomerang1038Binary Search Tree to Greater Sum Tree1039Minimum Score Triangulation of Polygon1040Moving Stones Until Consecutive II1041Robot Bounded In Circle1042Flower Planting With No Adjacent1043Partition Array for Maximum Sum1046Last Stone Weight1047Remove All Adjacent Duplicates In String1048Longest String Chain1051Height Checker1052Grumpy Bookstore Owner 1053Previous Permutation With One Swap1054Distant Barcodes1061Lexicographically Smallest Equivalent String1071Greatest Common Divisor of Strings1073Adding Two Negabinary Numbers1074Number of Submatrices That Sum to Target1078Occurrences After Bigram1079Letter Tile Possibilities1080Insufficient Nodes in Root to Leaf Paths1081Smallest Subsequence of Distinct Characters1089Duplicate Zeros1090Largest Values From Labels1091Shortest Path in Binary Matrix1093Statistics from a Large Sample1094Car Pooling1095Find in Mountain Array1103Distribute Candies to People1104Path In Zigzag Labelled Binary Tree1105Filling Bookcase Shelves1106Parsing A Boolean Expression1108Defanging an IP Address1109Corporate Flight Bookings1110Delete Nodes And Return Forest 1111Maximum Nesting Depth of Two Valid Parentheses Strings1122Relative Sort Array1123Lowest Common Ancestor of Deepest Leaves1124Longest Well-Performing Interval1125Smallest Sufficient Team1128Number of Equivalent Domino Pairs1129Shortest Path with Alternating Colors1130Minimum Cost Tree From Leaf Values1131Maximum of Absolute Value Expression1137N-th Tribonacci Number1138Alphabet Board Path 1139Largest 1-Bordered Square1140Stone Game II1143Longest Common Subsequence1144Decrease Elements To Make Array Zigzag1145Binary Tree Coloring Game1146Snapshot Array 1154Day of the Year1155Number of Dice Rolls With Target Sum 1156Swap For Longest Repeated Character Substring1160Find Words That Can Be Formed by Characters1161Maximum Level Sum of a Binary Tree1162As Far from Land as Possible1169invalid-transactions1170Compare Strings by Frequency of the Smallest Character1171Remove Zero Sum Consecutive Nodes from Linked List1172Dinner Plate Stacks1175Prime Arrangements1177Can Make Palindrome from Substring1178Number of Valid Words for Each Puzzle1184Distance Between Bus Stops1185Day of the Week1187Make Array Strictly Increasing1189Maximum Number of Balloons1190Reverse Substrings Between Each Pair of Parentheses1191K-Concatenation Maximum Sum 1200Minimum Absolute Difference1202Smallest String With Swaps1207Unique Number of Occurrences1208Get Equal Substrings Within Budget 1209Remove All Adjacent Duplicates in String II1210Minimum Moves to Reach Target with Rotations1217Play with Chips1218Longest Arithmetic Subsequence of Given Difference1220Count Vowels Permutation1221Split a String in Balanced Strings 1222Queens That Can Attack the King1223Dice Roll Simulation1224Maximum Equal Frequency1227Airplane Seat Assignment Probability1232Check If It Is a Straight Line1233Remove Sub-Folders from the Filesystem1234Replace the Substring for Balanced String 1235Maximum Profit in Job Scheduling1237Find Positive Integer Solution for a Given Equation1238Circular Permutation in Binary Representation1239Maximum Length of a Concatenated String with Unique Characters1247Minimum Swaps to Make Strings Equal1248Count Number of Nice Subarrays 1249Minimum Remove to Make Valid Parentheses1250Check If It Is a Good Array1252Cells with Odd Values in a Matrix1253Reconstruct a 2-Row Binary Matrix 1255Maximum Score Words Formed by Letters1260Shift 2D Grid1261Find Elements in a Contaminated Binary Tree1262Greatest Sum Divisible by Three1263Minimum Moves to Move a Box to Their Target Location1266Minimum Time Visiting All Points 1267Count Servers that Communicate 1268Search Suggestions System1269Number of Ways to Stay in the Same Place After Some Steps1275Find Winner on a Tic Tac Toe Game1276Number of Burgers with No Waste of Ingredients 1277Count Square Submatrices with All Ones1278Palindrome Partitioning III1281Subtract the Product and Sum of Digits of an Integer1282Group the People Given the Group Size They Belong To1283Find the Smallest Divisor Given a Threshold1284Minimum Number of Flips to Convert Binary Matrix to Zero Matrix1286Iterator for Combination1287Element Appearing More Than 25% In Sorted Array1288Remove Covered Intervals1289Minimum Falling Path Sum II1290Convert Binary Number in a Linked List to Integer1291Sequential Digits 1292Maximum Side Length of a Square with Sum Less than or Equal to Threshold1293Shortest Path in a Grid with Obstacles Elimination1295Find Numbers with Even Number of Digits1296Divide Array in Sets of K Consecutive Numbers1297Maximum Number of Occurrences of a Substring1298Maximum Candies You Can Get from Boxes1299Replace Elements with Greatest Element on Right Side1300Sum of Mutated Array Closest to Target1301Number of Paths with Max Score1302Deepest Leaves Sum1304Find N Unique Integers Sum up to Zero1305All Elements in Two Binary Search Trees1306Jump Game III1309Decrypt String from Alphabet to Integer Mapping1310XOR Queries of a Subarray1311Get Watched Videos by Your Friends1312Minimum Insertion Steps to Make a String Palindrome1313Decompress Run-Length Encoded List 1314Matrix Block Sum1315Sum of Nodes with Even-Valued Grandparent1316Distinct Echo Substrings1317Convert Integer to the Sum of Two No-Zero Integers1318Minimum Flips to Make a OR b Equal to c1320Minimum Distance to Type a Word Using Two Fingers1323Maximum 69 Number1324Print Words Vertically1325Delete Leaves With a Given Value1328Break a Palindrome 1329Sort the Matrix Diagonally 1330Reverse Subarray To Maximize Array Value1331Rank Transform of an Array1332Remove Palindromic Subsequences1333Filter Restaurants by Vegan-Friendly, Price and Distance 1334Find the City With the Smallest Number of Neighbors at a Threshold Distance1335Minimum Difficulty of a Job Schedule1337The K Weakest Rows in a Matrix1338Reduce Array Size to The Half1339Maximum Product of Splitted Binary Tree1340Jump Game V1342Number of Steps to Reduce a Number to Zero 1343Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold 1344Angle Between Hands of a Clock1346Check If N and Its Double Exist1347Minimum Number of Steps to Make Two Strings Anagram1348Tweet Counts Per Frequency1349Maximum Students Taking Exam1351Count Negative Numbers in a Sorted Matrix1352Product of the Last K Numbers1353Maximum Number of Events That Can Be Attended1356Sort Integers by The Number of 1 Bits1357Apply Discount Every n Orders1358Number of Substrings Containing All Three Characters1359Count All Valid Pickup and Delivery Options1360Number of Days Between Two Dates1361Validate Binary Tree Nodes1362Closest Divisors 1363Largest Multiple of Three1365How Many Numbers Are Smaller Than the Current Number1366Rank Teams by Votes1367Linked List in Binary Tree 1368Minimum Cost to Make at Least One Valid Path in a Grid1370Increasing Decreasing String1371Find the Longest Substring Containing Vowels in Even Counts1372Longest ZigZag Path in a Binary Tree1373Maximum Sum BST in Binary Tree1374Generate a String With Characters That Have Odd Counts1375Bulb Switcher III1376Time Needed to Inform All Employees 1377Frog Position After T Seconds1379Find a Corresponding Node of a Binary Tree in a Clone of That Tree1380Lucky Numbers in a Matrix1381Design a Stack With Increment Operation1382Balance a Binary Search Tree1383Maximum Performance of a Team1385Find the Distance Value Between Two Arrays1386Cinema Seat Allocation1387Sort Integers by The Power Value1389Create Target Array in the Given Order 1390Four Divisors1391Check if There is a Valid Path in a Grid1394Find Lucky Integer in an Array1395Count Number of Teams1396Design Underground System1399Count Largest Group1400Construct K Palindrome Strings1401Circle and Rectangle Overlapping1402Reducing Dishes1403Minimum Subsequence in Non-Increasing Order1404Number of Steps to Reduce a Number in Binary Representation to One1405Longest Happy String1406Stone Game III1408String Matching in an Array1409Queries on a Permutation With Key 1410HTML Entity Parser1411Number of Ways to Paint N × 3 Grid1413Minimum Value to Get Positive Step by Step Sum1414Find the Minimum Number of Fibonacci Numbers Whose Sum Is K 1415The k-th Lexicographical String of All Happy Strings of Length n 1416Restore The Array1417Reformat The String1418Display Table of Food Orders in a Restaurant1419Minimum Number of Frogs Croaking 1420Build Array Where You Can Find The Maximum Exactly K Comparisons1422Maximum Score After Splitting a String1423Maximum Points You Can Obtain from Cards1424Diagonal Traverse II1425Constrained Subsequence Sum1431Kids With the Greatest Number of Candies1432Max Difference You Can Get From Changing an Integer1433Check If a String Can Break Another String1434Number of Ways to Wear Different Hats to Each Other1436Destination City1437Check If All 1's Are at Least Length K Places Away1438Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit1439Find the Kth Smallest Sum of a Matrix With Sorted Rows1441Build an Array With Stack Operations1443Minimum Time to Collect All Apples in a Tree1446Consecutive Characters1447Simplified Fractions 1448Count Good Nodes in Binary Tree1449Form Largest Integer With Digits That Add up to Target1450Number of Students Doing Homework at a Given Time1451Rearrange Words in a Sentence1452People Whose List of Favorite Companies Is Not a Subset of Another List1455Check If a Word Occurs As a Prefix of Any Word in a Sentence1456Maximum Number of Vowels in a Substring of Given Length 1457Pseudo-Palindromic Paths in a Binary Tree1458Max Dot Product of Two Subsequences1460Make Two Arrays Equal by Reversing Sub-arrays1461Check If a String Contains All Binary Codes of Size K1462Course Schedule IV1463Cherry Pickup II1464Maximum Product of Two Elements in an Array1465Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts1467Probability of a Two Boxes Having The Same Number of Distinct Balls1470Shuffle the Array1471The k Strongest Values in an Array 1472Design Browser History1473Paint House III1475Final Prices With a Special Discount in a Shop1476Subrectangle Queries1477Find Two Non-overlapping Sub-arrays Each With Target Sum1480Running Sum of 1d Array 1481Least Number of Unique Integers after K Removals 1482Minimum Number of Days to Make m Bouquets1486XOR Operation in an Array 1487Making File Names Unique1488Avoid Flood in The City1491Average Salary Excluding the Minimum and Maximum Salary 1492The kth Factor of n 1493Longest Subarray of 1's After Deleting One Element 1496Path Crossing1497Check If Array Pairs Are Divisible by k1498Number of Subsequences That Satisfy the Given Sum Condition1499Max Value of Equation1502Can Make Arithmetic Progression From Sequence 1503Last Moment Before All Ants Fall Out of a Plank 1504Count Submatrices With All Ones1507Reformat Date1508Range Sum of Sorted Subarray Sums 1509Minimum Difference Between Largest and Smallest Value in Three Moves1510Stone Game IV1512Number of Good Pairs 1513Number of Substrings With Only 1s1514Path with Maximum Probability1518Water Bottles 1519Number of Nodes in the Sub-Tree With the Same Label1521Find a Value of a Mysterious Function Closest to Target1523Count Odd Numbers in an Interval Range1524Number of Sub-arrays With Odd Sum 1525Number of Good Ways to Split a String1528Shuffle String 1529Bulb Switcher IV1530Number of Good Leaf Nodes Pairs1534Count Good Triplets1535Find the Winner of an Array Game 1537Get the Maximum Score1539Kth Missing Positive Number1540Can Convert String in K Moves1542Find Longest Awesome Substring1544Make The String Great1545Find Kth Bit in Nth Binary String1546Maximum Number of Non-Overlapping Subarrays With Sum Equals Target1547Minimum Cost to Cut a Stick1550Three Consecutive Odds1551Minimum Operations to Make Array Equal 1552Magnetic Force Between Two Balls1553Minimum Number of Days to Eat N Oranges1556Thousand Separator1557Minimum Number of Vertices to Reach All Nodes1558Minimum Numbers of Function Calls to Make Target Array1560Most Visited Sector in a Circular Track1561Maximum Number of Coins You Can Get1562Find Latest Group of Size M1563Stone Game V1566Detect Pattern of Length M Repeated K or More Times1567Maximum Length of Subarray With Positive Product1572Matrix Diagonal Sum1573Number of Ways to Split a String1574Shortest Subarray to be Removed to Make Array Sorted1575Count All Possible Routes1576Replace All ?'s to Avoid Consecutive Repeating Characters1577Number of Ways Where Square of Number Is Equal to Product of Two Numbers1578Minimum Time to Make Rope Colorful1582Special Positions in a Binary Matrix1588Sum of All Odd Length Subarrays1589Maximum Sum Obtained of Any Permutation1590Make Sum Divisible by P1592Rearrange Spaces Between Words1594Maximum Non Negative Product in a Matrix1598Crawler Log Folder1599Maximum Profit of Operating a Centennial Wheel1600Throne Inheritance1601Maximum Number of Achievable Transfer Requests1603Design Parking System1604Alert Using Same Key-Card Three or More Times in a One Hour Period1605Find Valid Matrix Given Row and Column Sums1606Find Servers That Handled Most Number of Requests1608Special Array With X Elements Greater Than or Equal X1609Even Odd Tree 1610Maximum Number of Visible Points1611Minimum One Bit Operations to Make Integers Zero1614Maximum Nesting Depth of the Parentheses 1615Maximal Network Rank1616Split Two Strings to Make Palindrome1619Mean of Array After Removing Some Elements 1620Coordinate With Maximum Network Quality1621Number of Sets of K Non-Overlapping Line Segments1622Fancy Sequence1624Largest Substring Between Two Equal Characters 1629Slowest Key 1630Arithmetic Subarrays 1631Path With Minimum Effort1632Rank Transform of a Matrix1636Sort Array by Increasing Frequency1637Widest Vertical Area Between Two Points Containing No Points 1638Count Substrings That Differ by One Character1639Number of Ways to Form a Target String Given a Dictionary1640Check Array Formation Through Concatenation 1641Count Sorted Vowel Strings 1642Furthest Building You Can Reach1643Kth Smallest Instructions1646Get Maximum in Generated Array1647Minimum Deletions to Make Character Frequencies Unique 1648Sell Diminishing-Valued Colored Balls1649Create Sorted Array through Instructions1652Defuse the Bomb 1653Minimum Deletions to Make String Balanced1654Minimum Jumps to Reach Home1656Design an Ordered Stream1657Determine if Two Strings Are Close1658Minimum Operations to Reduce X to Zero 1662Check If Two String Arrays are Equivalent 1663Smallest String With A Given Numeric Value 1664Ways to Make a Fair Array 1668Maximum Repeating Substring 1669Merge In Between Linked Lists1670Design Front Middle Back Queue1672Richest Customer Wealth 1673Find the Most Competitive Subsequence1678Goal Parser Interpretation1679Max Number of K-Sum Pairs1684Count the Number of Consistent Strings1685Sum of Absolute Differences in a Sorted Array 1688Count of Matches in Tournament 1689Partitioning Into Minimum Number Of Deci-Binary Numbers 1694Reformat Phone Number1695Maximum Erasure Value 1696Jump Game VI1700Number of Students Unable to Eat Lunch 1701Average Waiting Time 1702Maximum Binary String After Change1704Determine if String Halves Are Alike 1705Maximum Number of Eaten Apples1706Where Will the Ball Fall1710Maximum Units on a Truck1711Count Good Meals1712Ways to Split Array Into Three Subarrays1713Minimum Operations to Make a Subsequence1716Calculate Money in Leetcode Bank 1720Decode XORed Array 1721Swapping Nodes in a Linked List1722Minimize Hamming Distance After Swap Operations1725Number Of Rectangles That Can Form The Largest Square 1726Tuple with Same Product 1732Find the Highest Altitude 1733Minimum Number of People to Teach1734Decode XORed Permutation1736Latest Time by Replacing Hidden Digits1737Change Minimum Characters to Satisfy One of Three Conditions1738Find Kth Largest XOR Coordinate Value 1739Building Boxes1742Maximum Number of Balls in a Box1743Restore the Array From Adjacent Pairs1744Can You Eat Your Favorite Candy on Your Favorite Day?1745Palindrome Partitioning IV1748Sum of Unique Elements1749Maximum Absolute Sum of Any Subarray 1750Minimum Length of String After Deleting Similar Ends 1751Maximum Number of Events That Can Be Attended II1752Check if Array Is Sorted and Rotated 1753Maximum Score From Removing Stones 1754Largest Merge Of Two Strings1758Minimum Changes To Make Alternating Binary String 1759Count Number of Homogenous Substrings1760Minimum Limit of Balls in a Bag1761Minimum Degree of a Connected Trio in a Graph1763Longest Nice Substring 1764Form Array by Concatenating Subarrays of Another Array1765Map of Highest Peak1768Merge Strings Alternately1769Minimum Number of Operations to Move All Balls to Each Box1770Maximum Score from Performing Multiplication Operations1771Maximize Palindrome Length From Subsequences1773Count Items Matching a Rule1774Closest Dessert Cost1775Equal Sum Arrays With Minimum Number of Operations1779Find Nearest Point That Has the Same X or Y Coordinate1780Check if Number is a Sum of Powers of Three 1781Sum of Beauty of All Substrings1784Check if Binary String Has at Most One Segment of Ones 1785Minimum Elements to Add to Form a Given Sum 1790Check if One String Swap Can Make Strings Equal1791Find Center of Star Graph 1792Maximum Average Pass Ratio1793Maximum Score of a Good Subarray1796Second Largest Digit in a String1797Design Authentication Manager1798Maximum Number of Consecutive Values You Can Make1799Maximize Score After N Operations1800Maximum Ascending Subarray Sum 1801Number of Orders in the Backlog1802Maximum Value at a Given Index in a Bounded Array1805Number of Different Integers in a String1806Minimum Number of Operations to Reinitialize a Permutation1807Evaluate the Bracket Pairs of a String1808Maximize Number of Nice Divisors1812Determine Color of a Chessboard Square 1813Sentence Similarity III1814Count Nice Pairs in an Array1816Truncate Sentence1817Finding the Users Active Minutes1818Minimum Absolute Sum Difference1822Sign of the Product of an Array 1823Find the Winner of the Circular Game1824Minimum Sideway Jumps1825Finding MK Average1827Minimum Operations to Make the Array Increasing 1828Queries on Number of Points Inside a Circle1829Maximum XOR for Each Query1832Check if the Sentence Is Pangram1833Maximum Ice Cream Bars1834Single-Threaded CPU1835Find XOR Sum of All Pairs Bitwise AND1837Sum of Digits in Base K 1838Frequency of the Most Frequent Element1839Longest Substring Of All Vowels in Order1840Maximum Building Height1844Replace All Digits with Characters1845Seat Reservation Manager1846Maximum Element After Decreasing and Rearranging1847Closest Room1848Minimum Distance to the Target Element1849Splitting a String Into Descending Consecutive Values1851Minimum Interval to Include Each Query1854Maximum Population Year1855Maximum Distance Between a Pair of Values1856Maximum Subarray Min-Product1857Largest Color Value in a Directed Graph1859Sorting the Sentence1860Incremental Memory Leak1861Rotating the Box1862Sum of Floored Pairs1863Sum of All Subset XOR Totals1864Minimum Number of Swaps to Make the Binary String Alternating1865Finding Pairs With a Certain Sum1866Number of Ways to Rearrange Sticks With K Sticks Visible1869Longer Contiguous Segments of Ones than Zeros1870Minimum Speed to Arrive on Time1871Jump Game VII1872Stone Game VIII1876Substrings of Size Three with Distinct Characters1877Minimize Maximum Pair Sum in Array1878Get Biggest Three Rhombus Sums in a Grid1880Check if Word Equals Summation of Two Words1881Maximum Value after Insertion1882Process Tasks Using Servers1883Minimum Skips to Arrive at Meeting On Time1884Egg Drop With 2 Eggs and N Floors1886Determine Whether Matrix Can Be Obtained By Rotation1887Reduction Operations to Make the Array Elements Equal1888Minimum Number of Flips to Make the Binary String Alternating1889Minimum Space Wasted From Packaging1893Check if All the Integers in a Range Are Covered1894Find the Student that Will Replace the Chalk1897Redistribute Characters to Make All Strings Equal1899Merge Triplets to Form Target Triplet1900The Earliest and Latest Rounds Where Players Compete1901Find a Peak Element II1903Largest Odd Number in String1904The Number of Full Rounds You Have Played1905Count Sub Islands1909Remove One Element to Make the Array Strictly Increasing1911Maximum Alternating Subsequence Sum1912Design Movie Rental System1913Maximum Product Difference Between Two Pairs1915Number of Wonderful Substrings1916Count Ways to Build Rooms in an Ant Colony1920Build Array from Permutation1921Eliminate Maximum Number of Monsters1922Count Good Numbers1925Count Square Sum Triples1926Nearest Exit from Entrance in Maze1928Minimum Cost to Reach Destination in Time1929Concatenation of Array 1930Unique Length-3 Palindromic Subsequences1931Painting a Grid With Three Different Colors1935Maximum Number of Words You Can Type1936Add Minimum Number of Rungs1941Check if All Characters Have Equal Number of Occurrences1942The Number of the Smallest Unoccupied Chair1944Number of Visible People in a Queue1945Sum of Digits of String After Convert1946Largest Number After Mutating Substring1947Maximum Compatibility Score Sum1952Three Divisors1953Maximum Number of Weeks for Which You Can Work1954Minimum Garden Perimeter to Collect Enough Apples1955Count Number of Special Subsequences1957Delete Characters to Make Fancy String1958Check if Move is Legal1961Check If String Is a Prefix of Array1962Remove Stones to Minimize the Total1963Minimum Number of Swaps to Make the String Balanced1964Find the Longest Valid Obstacle Course at Each Position1967Number of Strings That Appear as Substrings in Word1968Array With Elements Not Equal to Average of Neighbors1969Minimum Non-Zero Product of the Array Elements1970Last Day Where You Can Still Cross1971Find if Path Exists in Graph1974Minimum Time to Type Word Using Special Typewriter1975Maximum Matrix Sum1979Find Greatest Common Divisor of Array 1980Find Unique Binary String1984Minimum Difference Between Highest and Lowest of K Scores1985Find the Kth Largest Integer in the Array1991Find the Middle Index in Array1992Find All Groups of Farmland1993Operations on Tree1995Count Special Quadruplets1996The Number of Weak Characters in the Game2000Reverse Prefix of Word2001Number of Pairs of Interchangeable Rectangles2002Maximum Product of the Length of Two Palindromic Subsequences2006Count Number of Pairs With Absolute Difference K2007Find Original Array From Doubled Array2008Maximum Earnings From Taxi2011Final Value of Variable After Performing Operations 2012Sum of Beauty in the Array2013Detect Squares2016Maximum Difference Between Increasing Elements2017Grid Game2022Convert 1D Array Into 2D Array2023Number of Pairs of Strings With Concatenation Equal to Target2024Maximize the Confusion of an Exam2025Maximum Number of Ways to Partition an Array2027Minimum Moves to Convert String2028Find Missing Observations2030Smallest K-Length Subsequence With Occurrences of a Letter2032Two Out of Three2034Stock Price Fluctuation 2037Minimum Number of Moves to Seat Everyone2038Remove Colored Pieces if Both Neighbors are the Same Color2039The Time When the Network Becomes Idle2040Kth Smallest Product of Two Sorted Arrays2042Check if Numbers Are Ascending in a Sentence2043Simple Bank System2044Count Number of Maximum Bitwise-OR Subsets2045Second Minimum Time to Reach Destination2047Number of Valid Words in a Sentence2048Next Greater Numerically Balanced Number2049Count Nodes With the Highest Score2050Parallel Courses III2053Kth Distinct String in an Array2054Two Best Non-Overlapping Events2055Plates Between Candles2057Smallest Index With Equal Value2058Find the Minimum and Maximum Number of Nodes Between Critical Points2059Minimum Operations to Convert Number2062Count Vowel Substrings of a String2063Vowels of All Substrings2064Minimized Maximum of Products Distributed to Any Store2068Check Whether Two Strings are Almost Equivalent2069Walking Robot Simulation II2070Most Beautiful Item for Each Query2073Time Needed to Buy Tickets2074Reverse Nodes in Even Length Groups2075Decode the Slanted Ciphertext2076Process Restricted Friend Requests2078Two Furthest Houses With Different Colors2079Watering Plants2080Range Frequency Queries2081Sum of k-Mirror Numbers2085Count Common Words With One Occurrence2086Minimum Number of Food Buckets to Feed the Hamsters2087Minimum Cost Homecoming of a Robot in a Grid2088Count Fertile Pyramids in a Land2089Find Target Indices After Sorting Array2090K Radius Subarray Averages2091Removing Minimum and Maximum From Array2092Find All People With Secret2094Finding 3-Digit Even Numbers2095Delete the Middle Node of a Linked List2096Step-By-Step Directions From a Binary Tree Node to Another2099Find Subsequence of Length K With the Largest Sum2100Find Good Days to Rob the Bank2101Detonate the Maximum Bombs2102Sequentially Ordinal Rank Tracker2103Rings and Rods2105Watering Plants II2106Maximum Fruits Harvested After at Most K Steps2108Find First Palindromic String in the Array2109Adding Spaces to a String2110Number of Smooth Descent Periods of a Stock2111Minimum Operations to Make the Array K-Increasing2114Maximum Number of Words Found in Sentences2115Find All Possible Recipes from Given Supplies2117Abbreviating the Product of a Range2119A Number After a Double Reversal2120Execution of All Suffix Instructions Staying in a Grid2121Intervals Between Identical Elements2122Recover the Original Array2124Check if All A's Appears Before All B's2125Number of Laser Beams in a Bank2126Destroying Asteroids2129Capitalize the Title2130Maximum Twin Sum of a Linked List2131Longest Palindrome by Concatenating Two Letter Words2133Check if Every Row and Column Contains All Numbers2134Minimum Swaps to Group All 1's Together II2135Count Words Obtained After Adding a Letter2136Earliest Possible Day of Full Bloom2138Divide a String Into Groups of Size k2139Minimum Moves to Reach Target Score2140Solving Questions With Brainpower2144Minimum Cost of Buying Candies With Discount2145Count the Hidden Sequences2146K Highest Ranked Items Within a Price Range2147Number of Ways to Divide a Long Corridor2148Count Elements With Strictly Smaller and Greater Elements2149Rearrange Array Elements by Sign2150Find All Lonely Numbers in the Array2151Maximum Good People Based on Statements2154Keep Multiplying Found Values by Two2155All Divisions With the Highest Score of a Binary Array2156Find Substring With Given Hash Value2160Minimum Sum of Four Digit Number After Splitting Digits2161Partition Array According to Given Pivot2162Minimum Cost to Set Cooking Time2163Minimum Difference in Sums After Removal of Elements2164Sort Even and Odd Indices Independently2165Smallest Value of the Rearranged Number2166Design Bitset2167Minimum Time to Remove All Cars Containing Illegal Goods2169Count Operations to Obtain Zero2171Removing Minimum Number of Magic Beans2176Count Equal and Divisible Pairs in an Array2177Find Three Consecutive Integers That Sum to a Given Number2178Maximum Split of Positive Even Integers2179Count Good Triplets in an Array2180Count Integers With Even Digit Sum2181Merge Nodes in Between Zeros2182Construct String With Repeat Limit2185Counting Words With a Given Prefix2186Minimum Number of Steps to Make Two Strings Anagram II2187Minimum Time to Complete Trips2188Minimum Time to Finish the Race2190Most Frequent Number Following Key In an Array2191Sort the Jumbled Numbers2192All Ancestors of a Node in a Directed Acyclic Graph2194Cells in a Range on an Excel Sheet2195Append K Integers With Minimal Sum2196Create Binary Tree From Descriptions2197Replace Non-Coprime Numbers in Array2200Find All K-Distant Indices in an Array2201Count Artifacts That Can Be Extracted2202Maximize the Topmost Element After K Moves2206Divide Array Into Equal Pairs2208Minimum Operations to Halve Array Sum2209Minimum White Tiles After Covering With Carpets2210Count Hills and Valleys in an Array2211Count Collisions on a Road2212Maximum Points in an Archery Competition2215Find the Difference of Two Arrays2216Minimum Deletions to Make Array Beautiful2217Find Palindrome With Fixed Length2218Maximum Value of K Coins From Piles2220Minimum Bit Flips to Convert Number2221Find Triangular Sum of an Array2222Number of Ways to Select Buildings2224Minimum Number of Operations to Convert Time2225Find Players With Zero or One Losses2226Maximum Candies Allocated to K Children2227Encrypt and Decrypt Strings2231Largest Number After Digit Swaps by Parity2232Minimize Result by Adding Parentheses to Expression2233Maximum Product After K Increments2235Add Two Integers 2236Root Equals Sum of Children2239Find Closest Number to Zero2240Number of Ways to Buy Pens and Pencils2241Design an ATM Machine2243Calculate Digit Sum of a String2244Minimum Rounds to Complete All Tasks2245Maximum Trailing Zeros in a Cornered Path2246Longest Path With Different Adjacent Characters2248Intersection of Multiple Arrays2249Count Lattice Points Inside a Circle2250Count Number of Rectangles Containing Each Point2251Number of Flowers in Full Bloom2255Count Prefixes of a Given String2256Minimum Average Difference2257Count Unguarded Cells in the Grid2258Escape the Spreading Fire2259Remove Digit From Number to Maximize Result2260Minimum Consecutive Cards to Pick Up2262Total Appeal of A String2264Largest 3-Same-Digit Number in String2265Count Nodes Equal to Average of Subtree2266Count Number of Texts2267Check if There Is a Valid Parentheses String Path2269Find the K-Beauty of a Number2270Number of Ways to Split Array2271Maximum White Tiles Covered by a Carpet2273Find Resultant Array After Removing Anagrams2274Maximum Consecutive Floors Without Special Floors2275Largest Combination With Bitwise AND Greater Than Zero2278Percentage of Letter in String2279Maximum Bags With Full Capacity of Rocks2280Minimum Lines to Represent a Line Chart2283Check if Number Has Equal Digit Count and Digit Value2284Sender With Largest Word Count2287Rearrange Characters to Make Target String2288Apply Discount to Prices2289Steps to Make Array Non-decreasing2290Minimum Obstacle Removal to Reach Corner2293Min Max Game2294Partition Array Such That Maximum Difference Is K2295Replace Elements in an Array2296Design a Text Editor2299Strong Password Checker II2300Successful Pairs of Spells and Potions2301Match Substring After Replacement2302Count Subarrays With Score Less Than K2303Calculate Amount Paid in Taxes2304Minimum Path Cost in a Grid2306Naming a Company2309Greatest English Letter in Upper and Lower Case2310Sum of Numbers With Units Digit K2312Selling Pieces of Wood2315Count Asterisks2316Count Unreachable Pairs of Nodes in an Undirected Graph2317Maximum XOR After Operations2318Number of Distinct Roll Sequences2319Check if Matrix Is X-Matrix2320Count Number of Ways to Place Houses2321Maximum Score Of Spliced Array2325Decode the Message2326Spiral Matrix IV2327Number of People Aware of a Secret2328Number of Increasing Paths in a Grid2331Evaluate Boolean Binary Tree2332The Latest Time to Catch a Bus2334Subarray With Elements Greater Than Varying Threshold2335Minimum Amount of Time to Fill Cups2336Smallest Number in Infinite Set2337Move Pieces to Obtain a String2341Maximum Number of Pairs in Array2342Max Sum of a Pair With Equal Sum of Digits2343Query Kth Smallest Trimmed Number2344Minimum Deletions to Make Array Divisible2347Best Poker Hand2348Number of Zero-Filled Subarrays2349Design a Number Container System2351First Letter to Appear Twice2352Equal Row and Column Pairs2354Number of Excellent Pairs2357Make Array Zero by Subtracting Equal Amounts2358Maximum Number of Groups Entering a Competition2359Find Closest Node to Given Two Nodes2360Longest Cycle in a Graph2363Merge Similar Items2364Count Number of Bad Pairs2367Number of Arithmetic Triplets2368Reachable Nodes With Restrictions2373Largest Local Values in a Matrix2374Node With Highest Edge Score2375Construct Smallest Number From DI String2379Minimum Recolors to Get K Consecutive Black Blocks2381Shifting Letters II2382Maximum Segment Sum After Removals2383Minimum Hours of Training to Win a Competition2384Largest Palindromic Number2385Amount of Time for Binary Tree to Be Infected2389Longest Subsequence With Limited Sum2390Removing Stars From a String2391Minimum Amount of Time to Collect Garbage2395Find Subarrays With Equal Sum2396Strictly Palindromic Number2397Maximum Rows Covered by Columns2398Maximum Number of Robots Within Budget2399Check Distances Between Same Letters2400Number of Ways to Reach a Position After Exactly k Steps2402Meeting Rooms III2404Most Frequent Even Element2405Optimal Partition of String2406Divide Intervals Into Minimum Number of Groups2409Count Days Spent Together2410Maximum Matching of Players With Trainers2412Minimum Money Required Before Transactions2413Smallest Even Multiple2414Length of the Longest Alphabetical Continuous Substring2415Reverse Odd Levels of Binary Tree2416Sum of Prefix Scores of Strings2418Sort the People2419Longest Subarray With Maximum Bitwise AND2420Find All Good Indices2423Remove Letter To Equalize Frequency2424Longest Uploaded Prefix2425Bitwise XOR of All Pairings2426Number of Pairs Satisfying Inequality2427Number of Common Factors2428Maximum Sum of an Hourglass2429Minimize XOR2432The Employee That Worked on the Longest Task2433Find The Original Array of Prefix Xor2434Using a Robot to Print the Lexicographically Smallest String2435Paths in Matrix Whose Sum Is Divisible by K2437Number of Valid Clock Times2438Range Product Queries of Powers2439Minimize Maximum of Array2441Largest Positive Integer That Exists With Its Negative2442Count Number of Distinct Integers After Reverse Operations2443Sum of Number and Its Reverse2444Count Subarrays With Fixed Bounds2446Determine if Two Events Have Conflict2448Minimum Cost to Make Array Equal2449Minimum Number of Operations to Make Arrays Similar2451Odd String Difference2452Words Within Two Edits of Dictionary2453Destroy Sequential Targets2454Next Greater Element IV2455Average Value of Even Numbers That Are Divisible by Three2456Most Popular Video Creator2457Minimum Addition to Make Integer Beautiful2460Apply Operations to an Array2461Maximum Sum of Distinct Subarrays With Length K2462Total Cost to Hire K Workers2465Number of Distinct Averages2466Count Ways To Build Good Strings2468Split Message Based on Limit2469Convert the Temperature2472Maximum Number of Non-overlapping Palindrome Substrings2475Number of Unequal Triplets in Array2476Closest Nodes Queries in a Binary Search Tree2478Number of Beautiful Partitions2481Minimum Cuts to Divide a Circle2482Difference Between Ones and Zeros in Row and Column2483Minimum Penalty for a Shop2484Count Palindromic Subsequences2485Find the Pivot Integer2486Append Characters to String to Make Subsequence2487Remove Nodes From Linked List2488Count Subarrays With Median K2490Circular Sentence2491Divide Players Into Teams of Equal Skill2496Maximum Value of a String in an Array2498Frog Jump II2500Delete Greatest Value in Each Row2501Longest Square Streak in an Array2502Design Memory Allocator2503Maximum Number of Points From Grid Queries2506Count Pairs Of Similar Strings2508Add Edges to Make Degrees of All Nodes Even2509Cycle Length Queries in a Tree2511Maximum Enemy Forts That Can Be Captured2512Reward Top K Students2514Count Anagrams2515Shortest Distance to Target String in a Circular Array2516Take K of Each Character From Left and Right2520Count the Digits That Divide a Number2521Distinct Prime Factors of Product of Array2523Closest Prime Numbers in Range2525Categorize Box According to Criteria2526Find Consecutive Integers from a Data Stream2528Maximize the Minimum Powered City2529Maximum Count of Positive Integer and Negative Integer2532Time to Cross a Bridge2535Difference Between Element Sum and Digit Sum of an Array2537Count the Number of Good Subarrays2540Minimum Common Value2541Minimum Operations to Make Array Equal II2544Alternating Digit Sum2545Sort the Students by Their Kth Score2547Minimum Cost to Split an Array2549Count Distinct Numbers on Board2550Count Collisions of Monkeys on a Polygon2553Separate the Digits in an Array2554Maximum Number of Integers to Choose From a Range I2555Maximize Win From Two Segments2558Take Gifts From the Richest Pile2559Count Vowel Strings in Ranges2561Rearranging Fruits2562Find the Array Concatenation Value2563Count the Number of Fair Pairs2564Substring XOR Queries2565Subsequence With the Minimum Score2566Maximum Difference by Remapping a Digit2568Minimum Impossible OR2570Merge Two 2D Arrays by Summing Values2574Left and Right Sum Differences2577Minimum Time to Visit a Cell In a Grid2578Split With Minimum Sum2579Count Total Number of Colored Cells2582Pass the Pillow2585Number of Ways to Earn Points2586Count the Number of Vowel Strings in Range2591Distribute Money to Maximum Children2592Maximize Greatness of an Array2593Find Score of an Array After Marking All Elements2594Minimum Time to Repair Cars2595Number of Even and Odd Bits2596Check Knight Tour Configuration2598Smallest Missing Non-negative Integer After Operations2600K Items With the Maximum Sum2601Prime Subtraction Operation2602Minimum Operations to Make All Array Elements Equal2605Form Smallest Number From Two Digit Arrays2606Find the Substring With Maximum Cost2609Find the Longest Balanced Substring of a Binary String2610Convert an Array Into a 2D Array With Conditions2611Mice and Cheese2614Prime In Diagonal
