0001 Two Sum c c++ python go js java Easy 0002 Add Two Numbers c c++ python go Medium 0003 Longest Substring Without Repeating Characters c++ python go Medium 0004 Median of Two Sorted Arrays c++ python Hard 0005 Longest Palindromic Substring c++ python go Medium 0006 ZigZag Conversion c++ python go Medium 0007 Reverse Integer c++ python go Easy 0008 String to Integer (atoi) c++ python go Medium 0009 Palindrome Number c++ python go js Easy 0010 Regular Expression Matching c++ python go Hard 0011 Container With Most Water c++ python go Medium 0012 Integer to Roman c++ python go Medium 0013 Roman to Integer c++ python go js java Easy 0014 Longest Common Prefix c++ python go Easy 0015 3Sum c++ python go Medium 0016 3Sum Closest c++ python Medium 0017 Letter Combinations of a Phone Number c++ python Medium 0018 4Sum c++ python Medium 0019 Remove Nth Node From End of List c++ python Medium 0020 Valid Parentheses c++ python go java Easy 0021 Merge Two Sorted Lists c++ python Easy 0022 Generate Parentheses c++ python Medium 0023 Merge k Sorted Lists c++ python Hard 0024 Swap Nodes in Pairs c++ python Medium 0025 Reverse Nodes in k-Group c++ python Hard 0026 Remove Duplicates from Sorted Array c++ python go js Easy 0027 Remove Element c++ python go Easy 0028 Implement strStr() c++ python Easy 0029 Divide Two Integers c++ python Medium 0030 Substring with Concatenation of All Words c++ python Hard 0031 Next Permutation c++ python Medium 0032 Longest Valid Parentheses c++ python Hard 0033 Search in Rotated Sorted Array c++ python go Medium 0034 Find First and Last Position of Element in Sorted Array c++ python Medium 0035 Search Insert Position c++ python go Easy 0036 Valid Sudoku c++ python Medium 0037 Sudoku Solver c++ python Hard 0038 Count and Say c++ python Easy 0039 Combination Sum c++ python Medium 0040 Combination Sum II c++ python Medium 0041 First Missing Positive c++ python Hard 0042 Trapping Rain Water c++ python Hard 0043 Multiply Strings c++ python Medium 0044 Wildcard Matching c++ python Hard 0045 Jump Game II c++ python Hard 0046 Permutations c++ python java Medium 0047 Permutations II c++ python java Medium 0048 Rotate Image c++ python go Medium 0049 Group Anagrams c++ python go Medium 0050 Pow(x, n) c++ python Medium 0051 N-Queens c++ python Hard 0052 N-Queens II c++ python Hard 0053 Maximum Subarray c++ python Easy 0054 Spiral Matrix c++ python Medium 0055 Jump Game c++ python go Medium 0056 Merge Intervals c++ python Medium 0057 Insert Interval c++ Medium 0058 Length of Last Word c++ python js rust Easy 0059 Spiral Matrix II c++ python Hard 0060 Permutation Sequence c++ python Medium 0061 Rotate List c++ python Medium 0062 Unique Paths c++ python Medium 0063 Unique Paths II c++ python Medium 0064 Minimum Path Sum c++ python Medium 0065 Valid Number c++ python Hard 0066 Plus One c++ python rust Easy 0067 Add Binary c++ python Easy 0068 Text Justification c++ python Hard 0069 Sqrt(x) c++ python go Easy 0070 Climbing Stairs c++ python go Easy 0071 Simplify Path c++ python Medium 0072 Edit Distance c++ python Hard 0073 Set Matrix Zeroes c++ python Medium 0074 Search a 2D Matrix c++ python Medium 0075 Sort Colors c++ python go Medium 0076 Minimum Window Substring c++ python Easy 0077 Combinations c++ python Medium 0078 Subsets c++ python Medium 0079 Word Search c++ python Medium 0080 Remove Duplicates from Sorted Array II c++ python Medium 0081 Search in Rotated Sorted Array II c++ python Medium 0082 Remove Duplicates from Sorted List II c++ python Medium 0083 Remove Duplicates from Sorted List c++ python Easy 0084 Largest Rectangle in Histogram c++ python Hard 0085 Maximal Rectangle c++ python Hard 0086 Partition List c++ python Medium 0087 Scramble String c++ python Hard 0088 Merge Sorted Array c++ python Easy 0089 Gray Code c++ python Medium 0090 Subsets II c++ python Medium 0091 Decode Ways c++ python Medium 0092 Reverse Linked List II c++ python Medium 0093 Restore IP Addresses c++ python Medium 0094 Binary Tree Inorder Traversal c++ python Medium 0095 Unique Binary Search Trees II c++ python Medium 0096 Unique Binary Search Trees c++ python Medium 0097 Interleaving String c++ python Medium 0098 Validate Binary Search Tree c++ python Medium 0099 Recover Binary Search Tree c++ python Hard 0100 Same Tree c++ python Easy 0101 Symmetric Tree c++ python Easy 0102 Binary Tree Level Order Traversal c++ python Medium 0103 Binary Tree Zigzag Level Order Traversal c++ python Medium 0104 Maximum Depth of Binary Tree c++ python Easy 0105 Construct Binary Tree from Preorder and Inorder Traversal c++ python Medium 0106 Construct Binary Tree from Inorder and Postorder Traversal c++ python Medium 0107 Binary Tree Level Order Traversal II c++ python Easy 0108 Convert Sorted Array to Binary Search Tree c++ python Easy 0109 Convert Sorted List to Binary Search Tree c++ python Medium 0110 Balanced Binary Tree c++ python Easy 0111 Minimum Depth of Binary Tree c++ python Easy 0112 Path Sum c++ python Easy 0113 Path Sum II c++ python Medium 0114 Flatten Binary Tree to Linked List c++ python Medium 0115 Distinct Subsequences c++ python Hard 0116 Populating Next Right Pointers in Each Node c++ python Medium 0117 Populating Next Right Pointers in Each Node II c++ python Medium 0118 Pascal's Triangle c++ python Easy 0119 Pascal's Triangle II c++ python Easy 0120 Triangle c++ python Medium 0121 Best Time to Buy and Sell Stock c++ python go Easy 0122 Best Time to Buy and Sell Stock II c++ python Easy 0123 Best Time to Buy and Sell Stock III c++ python Hard 0124 Binary Tree Maximum Path Sum c++ python Hard 0125 Valid Palindrome c++ python go Easy 0126 Word Ladder II c++ python Hard 0127 Word Ladder c++ python Medium 0128 Longest Consecutive Sequence c++ python go Hard 0129 Sum Root to Leaf Numbers c++ python Medium 0130 Surrounded Regions c++ python Medium 0131 Palindrome Partitioning c++ python Medium 0132 Palindrome Partitioning II c++ python Hard 0133 Clone Graph c++ python Medium 0134 Gas Station c++ python Medium 0135 Candy c++ python Hard 0136 Single Number c++ python go Easy 0137 Single Number II c++ python go Medium 0138 Copy List with Random Pointer c++ python Medium 0139 Word Break c++ python Medium 0140 Word Break II c++ python Hard 0141 Linked List Cycle c++ python Easy 0142 Linked List Cycle II c++ python Medium 0143 Reorder-List c++ python Medium 0144 Binary Tree Preorder Traversal c++ python Medium 0145 Binary Tree Postorder Traversal c++ python Hard 0146 LRU Cache c++ python Hard 0147 Insertion Sort List c++ python Medium 0148 Sort List c++ python Medium 0149 Max Points on a Line c++ python Hard 0150 Evaluate Reverse Polish Notation c++ python Medium 0151 Reverse Words in a String c++ python Medium 0152 Maximum Product Subarray c++ python go Medium 0153 Find Minimum in Rotated Sorted Array c++ python go Medium 0154 Find Minimum in Rotated Sorted Array II c++ python Hard 0155 Min Stack c++ python Easy 0160 Intersection of Two Linked Lists c++ python Easy 0162 Find Peak Element c++ python go rust Medium 0165 Compare Version Numbers c++ python Medium 0166 Fraction to Recurring Decimal c++ python Medium 0167 Two Sum II - Input array is sorted c++ python Easy 0168 Excel Sheet Column Title c++ python Easy 0169 Majority Element c++ python go rust Easy 0171 Excel Sheet Column Number c++ python Easy 0172 Factorial Trailing Zeroes c++ python Easy 0173 Binary Search Tree Iterator c++ python Medium 0174 Dungeon Game c++ python Hard 0179 Largest Number c++ python Medium 0187 Repeated-DNA-Sequences c++ python Medium 0188 Best Time to Buy and Sell Stock IV c++ python Hard 0189 Rotate Array c++ python Easy 0190 Reverse Bits c++ python go Easy 0191 Number of 1 Bits c++ python go Easy 0198 House Robber c++ python go Easy 0199 Binary Tree Right Side View c++ python Medium 0200 Number of Islands c++ python go js java Medium 0201 Bitwise AND of Numbers Range c++ python Medium 0202 Happy Number c++ python Easy 0203 Remove Linked List Elements c++ python Easy 0204 Count Primes c++ python Easy 0205 Isomorphic Strings c++ python Easy 0206 Reverse Linked List c++ python go Easy 0207 Course Schedule c++ python go js Medium 0208 Implement Trie (Prefix Tree) c++ python Medium 0209 Minimum Size Subarray Sum c++ python Medium 0210 Course Schedule II c++ python go js Medium 0211 Add and Search Word - Data structure design c++ python rust Medium 0212 Word Search II c++ python go js Medium 0213 House Robber II c++ python Medium 0215 Kth Largest Element in an Array c++ python Medium 0216 Combination Sum III c++ python Medium 0217 Contains Duplicate c++ python go Easy 0218 The Skyline Problem c++ python go js Hard 0219 Contains Duplicate II c++ python go Easy 0221 Maximal Square c++ python go js Medium 0222 Count Complete Tree Nodes c++ python Medium 0223 Rectangle Area c++ python Medium 0224 Basic Calculator c++ python go js Hard 0226 Invert Binary Tree c++ python Easy 0228 Summary Ranges c++ python Medium 0229 Majority Element II c++ python rust Medium 0230 Kth Smallest Element in a BST c++ python Medium 0231 Power of Two c++ python go Easy 0234 Palindrome Linked List c++ python Medium 0235 Lowest Common Ancestor of a Binary Search Tree c++ python Easy 0236 Lowest Common Ancestor of a Binary Tree c++ python Medium 0237 Delete Node in a Linked List c++ python Easy 0238 Product of Array Except Self c++ python go Medium 0239 Sliding Window Maximum c++ python Medium 0240 Search a 2D Matrix II c++ python Medium 0241 Different Ways to Add Parentheses c++ python Medium 0242 Valid Anagram c++ python go Easy 0242 Binary Tree Paths c++ python Easy 0253 Meeting Rooms II c++ python Medium 0260 Single Number III c++ python java Medium 0263 Ugly Number c++ python go Easy 0264 Ugly Number II c++ python Medium 0268 Missing Number c++ python go Easy 0274 H-Index c++ python go Medium 0275 H-Index c++ python go Medium 0278 First Bad Version c++ python go Easy 0279 Perfect Squares c++ python Medium 0283 Move Zeroes c++ python Easy 0287 Find the Duplicate Number c++ python Medium 0289 Game of Life c++ python Medium 0290 Word Pattern c++ python Easy 0297 Serialize and Deserialize Binary Tree c++ python js Hard 0300 Longest Increasing Subsequence c++ python rust Medium 0303 Range Sum Query - Immutable c++ python Easy 0307 Range Sum Query - Mutable c++ python go js Medium 0309 Best Time to Buy and Sell Stock with Cooldown c++ python Medium 0310 Insert Delete GetRandom O(1) c++ Medium 0316 Remove Duplicate Letters c++ python Hard 0319 Bulb Switcher c++ python go Medium 0322 Coin-Change c++ python go js java Medium 0325 Maximum Size Subarray Sum Equals k c++ python Medium 0326 Power of Three c++ go rust Easy 0328 Odd Even Linked List c++ python Medium 0331 Verify Preorder Serialization of a Binary Tree c++ python Medium 0337 House Robber III c++ python Medium 0341 Flatten Nested List Iterator c++ python Medium 0343 Integer Break c++ python Medium 0344 Reverse String c++ python go Easy 0345 Reverse Vowels of a String c++ python Easy 0347 Top K Frequent Elements c++ python go Medium 0349 Intersection of Two Arrays c++ python Easy 0350 Intersection of Two Arrays II c++ python Easy 0352 Data Stream as Disjoint Intervals c++ Hard 0354 Russian Doll Envelopes c++ python Hard 0365 Water and Jug Problem c++ python go js java Medium 0371 Sum of Two Integers c++ python rust Medium 0377 Combination Sum IV c++ python Medium 0389 Find the Difference c++ python Easy 0384 Shuffle an Array c++ rust Medium 0392 Is Subsequence c++ python Medium 0401 Binary Watch c++ python Easy 0404 Sum of Left Leaves c++ python Easy 0409 Longest Palindrome c++ python go js java Easy 0416 Partition Equal Subset Sum c++ python go js java Medium 0423 Reconstruct Original Digits from English c++ rust Medium 0424 Longest Repeating Character Replacement c++ python go js Medium 0435 Non-overlapping Intervals c++ python go Medium 0437 Path Sum III c++ python Easy 0438 Find All Anagrams in a String c++ python rust Medium 0445 Add Two Numbers II c++ python Medium 0446 Arithmetic Slices II - Subsequence c++ Hard 0447 Number of Boomerangs c++ python rust Medium 0450 Delete Node in a BST c++ python Medium 0451 Sort Characters By Frequency c++ python Easy 0452 Minimum Number of Arrows to Burst Balloons c++ Medium 0453 Minimum Moves to Equal Array Elements c++ python rust Easy 0454 4Sum II c++ python Medium 0455 Assign Cookies c++ python Easy 0458 Poor Pigs c++ python rust Hard 0459 Repeated Substring Pattern c++ python go js java Easy 0462 Minimum Moves to Equal Array Elements II c++ python Medium 0473 Matchsticks to Square c++ python go js java Medium 0474 Ones and Zeroes c++ python Medium 0486 Predict the Winner c++ python Medium 0492 Construct the Rectangle c++ python go js java rust Easy 0492 Construct the Rectangle c++ python go js java rust Easy 0492 Construct the Rectangle c++ rust Easy 0494 Target Sum c++ python Medium 0496 Next Greater Element I c++ python Easy 0503 Next Greater Element II c++ python Medium 0520 Detect Capital c++ Easy 0524 Longest Word in Dictionary through Deleting c++ rust Medium 0525 Contiguous Array c++ python Medium 0528 Random Pick with Weight c++ python go js java rust Medium 0530 Minimum Absolute Difference in BST c++ python Easy 0543 Diameter of Binary Tree c++ python Easy 0547 Friend Circles c++ python Medium 0559 Maximum Depth of N-ary Tree c++ Easy 0560 Subarray Sum Equals K c++ python Medium 0567 Permutation in String c++ Medium 0583 Delete Operation for Two Strings c++ rust Medium 0587 Erect the Fence c++ Hard 0594 Longest Harmonious Subsequence c++ rust Easy 0605 Can Place Flowers c++ Easy 0637 Average of Levels in Binary Tree c++ python Easy 0638 Shopping Offers c++ rust Medium 0650 2 Keys Keyboard c++ python Medium 0652 Find Duplicate Subtrees c++ python go js Medium 0653 Two Sum IV - Input is a BST c++ python Easy 0654 Maximum Binary Tree c++ python Medium 0678 Valid Parenthesis String c++ rust Medium 0684 Redundant Connection c++ python Medium 0687 Longest Univalue Path c++ python Easy 0695 Max Area of Island c++ python go js java Medium 0697 Degree of an Array c++ Easy 0698 Partition to K Equal Sum Subsets c++ python go js java Medium 0700 Search in a Binary Search Tree c++ rust Easy 0733 Flood Fill c++ python Easy 0739 Daily Temperatures c++ python go Medium 0742 Closest Leaf in a Binary Tree c++ python Medium 0776 Toeplitz Matrix c++ Easy 0783 Minimum Distance Between BST Nodes c++ Easy 0788 Rotated Digits c++ python Easy 0790 Domino and Tromino Tiling c++ Medium 0793 Preimage Size of Factorial Zeroes Function c++ python go js Hard 0795 Number of Subarrays with Bounded Maximum c++ Medium 0813 Largest Sum of Averages c++ Medium 0820 Short Encoding of Words c++ python go js java Medium 0824 Goat Latin c++ python go js java Easy 0825 Friends Of Appropriate Ages c++ python go js java Medium 0826 Most Profit Assigning Work c++ python go js java Medium 0827 Making A Large Island c++ python go js java Hard 0828 Unique Letter String c++ python go js java Hard 0829 Consecutive Numbers Sum c++ python go js java Hard 0832 Flipping an Image c++ python Easy 0834 Sum of Distances in Tree c++ python Hard 0836 Rectangle Overlap c++ python go js java Easy 0844 Backspace String Compare c++ python Easy 0845 Longest Mountain in Array c++ python Medium 0846 Hand of Straights c++ python Medium 0847 Shortest Path Visiting All Nodes c++ python go js Hard 0852 Peak Index in a Mountain Array c++ python Easy 0857 Minimum Cost to Hire K Workers c++ python go js java Hard 0859 Buddy Strings c++ rust Easy 0872 Leaf-Similar Trees c++ python Easy 0873 Length of Longest Fibonacci Subsequence c++ python Medium 0874 Walking Robot Simulation c++ python Easy 0876 Middle of the Linked List c++ python go js java Easy 0878 Nth Magical Number c++ Hard 0891 Sum of Subsequence Widths c++ python go js Hard 0892 Surface Area of 3D Shapes c++ python go js java Easy 0895 Maximum Frequency Stack c++ Hard 0901 Online Stock Span c++ python Medium 0902 Numbers At Most N Given Digit Set c++ python Hard 0904 Fruit Into Baskets c++ Medium 0907 Sum of Subarray Minimums c++ python Medium 0914 X of a Kind in a Deck of Cards c++ python go js java Easy 0917 Reverse Only Letters c++ python Easy 0918 Maximum Sum Circular Subarray c++ python Medium 0919 Complete Binary Tree Inserter c++ python Medium 0920 Number of Music Playlists c++ python Medium 0921 Minimum Add to Make Parentheses Valid c++ python Medium 0922 Sort Array By Parity II c++ python Easy 0923 3Sum With Multiplicity c++ python Medium 0925 Long Pressed Name c++ python Easy 0926 Flip String to Monotone Increasing c++ python Medium 0927 Three Equal Parts c++ python Medium 0929 Unique Email Addresses c++ python Easy 0930 Binary Subarrays With Sum c++ python Medium 0931 Minimum Falling Path Sum c++ python Medium 0932 Beautiful Array c++ python Medium 0933 Number of Recent Calls c++ python Easy 0934 Shortest Bridge c++ python Medium 0935 Knight Dialer c++ python Medium 0936 Stamping The Sequence c++ python go js Hard 0937 Reorder Log Files c++ python Easy 0938 Range Sum of BST c++ python Medium 0939 Minimum Area Rectangle c++ python Medium 0940 Distinct Subsequences II c++ python Hard 0941 Valid Mountain Array c++ python Easy 0942 DI String Match c++ python Easy 0943 Find the Shortest Superstring c++ python Hard 0944 Delete Columns to Make Sorted c++ python Easy 0945 Minimum Increment to Make Array Unique c++ python Medium 0946 Validate Stack Sequences c++ python go js java Medium 0947 Most Stones Removed with Same Row or Column c++ python Medium 0948 Bag of Tokens c++ python Medium 0949 Largest Time for Given Digits c++ python Easy 0950 Reveal Cards In Increasing Order c++ python Medium 0951 Flip Equivalent Binary Trees c++ python Medium 0953 Verifying an Alien Dictionary c++ python Easy 0954 Array of Doubled Pairs c++ python Medium 0955 Delete Columns to Make Sorted II c++ python Medium 0956 Tallest Billboard c++ python Hard 0957 Prison Cells After N Days c++ python Medium 0958 Check 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python Medium 0981 Time Based Key-Value Store c++ python Medium 0982 Triples with Bitwise AND Equal To Zero c++ python Hard 0983 Minimum Cost For Tickets c++ python Medium 0984 String Without AAA or BBB c++ python Easy 0985 Sum of Even Numbers After Queries c++ python Easy 0986 Interval List Intersections c++ python Medium 0987 Vertical Order Traversal of a Binary Tree c++ python Medium 0988 Smallest String Starting From Leaf c++ python Medium 0989 Add to Array-Form of Integer c++ python Easy 0990 Satisfiability of Equality Equations c++ python Medium 0991 Broken Calculator c++ python Medium 0992 Subarrays with K Different Integers c++ python Hard 0993 Cousins in Binary Tree c++ python Easy 0994 Rotting Oranges c++ python Easy 0995 Minimum Number of K Consecutive Bit Flips c++ python Hard 0996 Number of Squareful Arrays c++ python Hard 0997 Find the Town Judge c++ python Easy 0998 Maximum Binary Tree II c++ python Medium 0999 Available Captures for Rook c++ python Easy 1000 Minimum Cost to Merge Stones c++ java Hard 1001 Grid Illumination c++ python Hard 1002 Find Common Characters c++ python Easy 1003 Check If Word Is Valid After Substitutions c++ python Medium 1004 Max Consecutive Ones III c++ python Medium 1005 Maximize Sum Of Array After K Negations c++ python Easy 1006 Clumsy Factorial c++ python Medium 1007 Minimum Domino Rotations For Equal Row c++ python Medium 1008 Construct Binary Search Tree from Preorder Traversal c++ python Medium 1009 Complement of Base 10 Integer c++ python Easy 1010 Pairs of Songs With Total Durations Divisible by 60 c++ python Easy 1011 Capacity To Ship Packages Within D Days c++ python Medium 1012 Numbers With Repeated Digits c++ python Hard 1013 Partition Array Into Three Parts With Equal Sum c++ python Easy 1014 Best Sightseeing Pair c++ python Medium 1015 Smallest Integer Divisible by K c++ python Medium 1017 Convert to Base -2 c++ python Medium 1018 Binary Prefix Divisible By 5 c++ python Easy 1019 Next Greater Node In 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python go Easy 1109 iCorporate Flight Bookings c++ python go Medium 1110 Delete Nodes And Return Forest c++ python go Medium 1111 Maximum Nesting Depth of Two Valid Parentheses Strings c++ python go Medium 1118 Number of Days in a Month c++ python go Easy 1119 Remove Vowels from a String c++ python go Easy 1120 Maximum Average Subtree c++ python go Medium 1121 Divide Array Into Increasing Sequences c++ python go Hard 1122 Relative Sort Array c++ python go Easy 1123 Lowest Common Ancestor of Deepest Leaves c++ python go Medium 1124 Longest Well-Performing Interval c++ python go Medium 1125 Smallest Sufficient Team c++ python go Hard 1128 Number of Equivalent Domino Pairs c++ python go js Easy 1129 Shortest Path with Alternating Colors c++ python go js Medium 1130 Minimum Cost Tree From Leaf Values c++ python go js Medium 1131 Maximum of Absolute Value Expression c++ python go js Medium 1133 Largest Unique Number c++ python go js Easy 1134 Armstrong Number c++ python go js Easy 1135 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go js java Hard 1252 Cells with Odd Values in a Matrix c++ python go js java Easy 1253 Reconstruct a 2-Row Binary Matrix c++ python go js java Medium 1254 Number of Closed Islands c++ python go js java Medium 1255 Maximum Score Words Formed by Letters c++ python go js java Hard 1256 Encode Number c++ python go js java Medium 1257 Smallest Common Region c++ python go js java Medium 1258 Synonymous Sentences c++ python go js java Medium 1259 Handshakes That Don't Cross c++ python go java Hard 1260 Shift 2D Grid c++ python go js java Easy 1261 Find Elements in a Contaminated Binary Tree c++ python go js java Medium 1262 Greatest Sum Divisible by Three c++ python go js java Medium 1263 Minimum Moves to Move a Box to Their Target Location c++ python go js java Hard 1266 Minimum Time Visiting All Points c++ python go js java Easy 1267 Count Servers that Communicate c++ python go js java Medium 1268 Search Suggestions System c++ python go js java Medium 1269 Number of Ways to Stay in the Same Place After Some Steps c++ python go js java Hard 1271 Hexspeak c++ python go js java Easy 1272 Remove Interval c++ python go js java Medium 1273 Delete Tree Nodes c++ python go js java Medium 1274 Number of Ships in a Rectangle c++ python js java Hard 1275 Find Winner on a Tic Tac Toe Game c++ python go js java Easy 1276 Number of Burgers with No Waste of Ingredients c++ python go js java Medium 1277 Count Square Submatrices with All Ones c++ python go js java Medium 1278 Palindrome Partitioning III c++ python go js java Hard 1281 Subtract the Product and Sum of Digits of an Integer c++ python go js java Easy 1282 Group the People Given the Group Size They Belong To c++ python go js java Medium 1283 Find the Smallest Divisor Given a Threshold c++ python go js java Medium 1284 Minimum Number of Flips to Convert Binary Matrix to Zero Matrix c++ python go js java Hard 1286 Iterator for Combination c++ python go js java Medium 1287 Element Appearing More Than 25% In Sorted Array c++ python go js java Easy 1288 Remove Covered Intervals c++ python go js java Medium 1289 Minimum Falling Path Sum II c++ python go js java Hard 1290 Convert Binary Number in a Linked List to Integer c++ python go js java Easy 1291 Sequential Digits c++ python go js java Medium 1292 Maximum Side Length of a Square with Sum Less than or Equal to Threshold c++ python go js java Medium 1293 Shortest Path in a Grid with Obstacles Elimination c++ python go js java Hard 1295 Find Numbers with Even Number of Digits c++ python go js java Easy 1296 Divide Array in Sets of K Consecutive Numbers c++ python go js java Medium 1297 Maximum Number of Occurrences of a Substring c++ python go js java Medium 1298 Maximum Candies You Can Get from Boxes c++ python go js java Hard 1299 Replace Elements with Greatest Element on Right Side c++ python go js java Easy 1300 Sum of Mutated Array Closest to Target c++ python go js java Medium 1301 Number of Paths with Max Score c++ python go js java Hard 1302 Deepest Leaves Sum c++ python go js java Medium 1304 Find N Unique Integers Sum up to Zero c++ python go js java Easy 1305 All Elements in Two Binary Search Trees c++ python go js java Medium 1306 Jump Game III c++ python go js java Medium 1307 Verbal Arithmetic Puzzle c++ python go js java Hard 1309 Decrypt String from Alphabet to Integer Mapping c++ python go js java Easy 1310 XOR Queries of a Subarray c++ python go js java Medium 1311 Get Watched Videos by Your Friends c++ python go js java Medium 1313 Decompress Run-Length Encoded List c++ python go js java Easy 1314 Matrix Block Sum c++ python go js java Medium 1315 Sum of Nodes with Even-Valued Grandparent c++ python go js java Medium 1316 Distinct Echo Substrings c++ python go js java Hard 1317 Convert Integer to the Sum of Two No-Zero Integers c++ python go js java Easy 1318 Minimum Flips to Make a OR b Equal to c c++ python go js java Medium 1319 Number of Operations to Make Network Connected c++ python go js java Medium 1320 Minimum Distance to Type a Word Using Two Fingers c++ python go js java Hard 1323 Maximum 69 Number c++ python go js java Easy 1324 Print Words Vertically c++ python go js java Medium 1325 Delete Leaves With a Given Value c++ python go js java Medium 1326 Minimum Number of Taps to Open to Water a Garden c++ python go js java Hard 1328 Break a Palindrome c++ python go js java Medium 1329 Sort the Matrix Diagonally c++ python go js java Medium 1330 Reverse Subarray To Maximize Array Value c++ python go js java Hard 1331 Rank Transform of an Array c++ python go js java Easy 1332 Remove Palindromic Subsequences c++ python go js java Easy 1333 Filter Restaurants by Vegan-Friendly, Price and Distance c++ python go js java Medium 1334 Find the City With the Smallest Number of Neighbors at a Threshold Distance c++ python go js java Medium 1335 Minimum Difficulty of a Job Schedule c++ python go js java Hard 1337 The K Weakest Rows in a Matrix c++ python go js java Easy 1338 Reduce Array Size to The Half c++ python go js java Medium 1339 Maximum Product of Splitted Binary Tree c++ python go js java Medium 1340 Jump Game V c++ python go js java Hard 1342 Number of Steps to Reduce a Number to Zero c++ python go js java Easy 1343 Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold c++ python go js java Medium 1344 Angle Between Hands of a Clock c++ python go js java Medium 1345 Jump Game IV c++ python go js java Hard 1346 Check If N and Its Double Exist c++ python go js java Easy 1347 Minimum Number of Steps to Make Two Strings Anagram c++ python go js java Medium 1348 Tweet Counts Per Frequency c++ python go js java Medium 1349 Maximum Students Taking Exam c++ python go js java Hard 1351 Count Negative Numbers in a Sorted Matrix c++ python go js java Easy 1352 Product of the Last K Numbers c++ python go js java Medium 1353 Maximum Number of Events That Can Be Attended c++ python go js java Medium 1354 Construct Target Array With Multiple Sums c++ python go js java Hard 1356 Sort Integers by The Number of 1 Bits c++ python go js java Easy 1357 Apply Discount Every n Orders c++ python go js java Medium 1358 Number of Substrings Containing All Three Characters c++ python go js java Medium 1359 Count All Valid Pickup and Delivery Options c++ python go js java Hard 1360 Number of Days Between Two Dates c++ python go js java Easy 1361 Validate Binary Tree Nodes c++ python go js java Medium 1362 Closest Divisors c++ python go js java Medium 1363 Largest Multiple of Three c++ python go js java Hard 1365 How Many Numbers Are Smaller Than the Current Number c++ python go js java Easy 1366 Rank Teams by Votes c++ python go js java Medium 1367 Linked List in Binary Tree c++ python go js java Medium 1368 Minimum Cost to Make at Least One Valid Path in a Grid c++ python go js java Hard 1370 Increasing Decreasing String c++ python go js java Easy 1371 Find the Longest Substring Containing Vowels in Even Counts c++ python go js java Medium 1372 Longest ZigZag Path in a Binary Tree c++ python go js java Medium 1373 Maximum Sum BST in Binary Tree c++ python go js java Hard 1374 Generate a String With Characters That Have Odd Counts c++ python go js java Easy 1375 Bulb Switcher III c++ python go js java Medium 1376 Time Needed to Inform All Employees c++ python go js java Medium 1377 Frog Position After T Seconds c++ python go js java Hard 1380 Lucky Numbers in a Matrix c++ python go js java Easy 1381 Design a Stack With Increment Operation c++ python go js java Medium 1382 Balance a Binary Search Tree c++ python go js java Medium 1383 Maximum Performance of a Team c++ python go js java Hard 1385 Find the Distance Value Between Two Arrays c++ python go js java Easy 1386 Cinema Seat Allocation c++ python go js java Medium 1387 Sort Integers by The Power Value c++ python go js java Medium 1388 Pizza With 3n Slices c++ python go js java Hard 1389 Create Target Array in the Given Order c++ python go js java Easy 1390 Four Divisors c++ python go js java Medium 1391 Check if There is a Valid Path in a Grid c++ python go js java Medium 1392 Longest Happy Prefix c++ python go js java Hard 1394 Find Lucky Integer in an Array c++ python go js java Easy 1395 Count Number of Teams c++ python go js java Medium 1396 Design Underground System c++ python go js java Medium 1397 Find All Good Strings c++ python go js java Hard 1399 Count Largest Group c++ python go js java Easy 1400 Construct K Palindrome Strings c++ python go js java Medium 1401 Circle and Rectangle Overlapping c++ python go js java Medium 1402 Reducing Dishes c++ python go js java Hard 1403 Minimum Subsequence in Non-Increasing Order c++ python go js java Easy 1404 Number of Steps to Reduce a Number in Binary Representation to One c++ python go js java Medium 1405 Longest Happy String c++ python go js java Medium 1406 Stone Game III c++ python go js java Hard 1408 String Matching in an Array c++ python go js java Easy 1409 Queries on a Permutation With Key c++ python go js java Medium 1410 HTML Entity Parser c++ python go js java Medium 1411 Number of Ways to Paint N×3 Grid c++ python go js java Hard 1413 Minimum Value to Get Positive Step by Step Sum c++ python go js java Easy 1414 Find the Minimum Number of Fibonacci Numbers Whose Sum Is K c++ python go js java Medium 1415 The k-th Lexicographical String of All Happy Strings of Length n c++ python go js java Medium 1416 Restore The Array c++ python go js java Hard 1417 Reformat The String c++ python go js java Easy 1418 Display Table of Food Orders in a Restaurant c++ python go js java Medium 1419 Minimum Number of Frogs Croaking c++ python go js java Medium 1420 Build Array Where You Can Find The Maximum Exactly K Comparisons c++ python go js java Hard 1422 Maximum Score After Splitting a String c++ python go js java Easy 1423 Maximum Points You Can Obtain from Cards c++ python go js java Medium 1424 Diagonal Traverse II c++ python go js java Medium 1425 Constrained Subsequence Sum c++ python go js java Hard 1431 Kids With the Greatest Number of Candies c++ python go js java Easy 1432 Max Difference You Can Get From Changing an Integer c++ python go js java Medium 1433 Check If a String Can Break Another String c++ python go js java Medium 1434 Number of Ways to Wear Different Hats to Each Other c++ python go js java Hard 1436 Destination City c++ python go js java Easy 1437 Check If All 1's Are at Least Length K Places Away c++ python go js java Medium 1438 Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit c++ python go js java Medium 1439 Find the Kth Smallest Sum of a Matrix With Sorted Rows c++ python go js java Hard 1441 Build an Array With Stack Operations c++ python go js java Easy 1442 Count Triplets That Can Form Two Arrays of Equal XOR c++ python go js java Medium 1443 Minimum Time to Collect All Apples in a Tree c++ python go js java Medium 1444 Number of Ways of Cutting a Pizza c++ python go js java Hard 1470 Shuffle the Array c++ Easy 1472 Design Browser History c++ Medium 1523 Count Odd Numbers in an Interval Range c++ Easy 1546 Maximum Number of Non-Overlapping Subarrays With Sum Equals Target c++ Medium 1574 Shortest Subarray To Be Removed To Make Array Sorted c++ Medium 1604 Alert Using Same Key-Card Three or More Times in a One Hour Period c++ Medium 1616 Split Two Strings to Make Palindrome c++ Medium 1626 Best Team With No Conflicts c++ Medium 1657 Determine if Two Strings Are Close c++ Medium 1658 Minimum Operations to Reduce X to Zero c++ Medium 1664 Ways to Make a Fair Array c++ Medium 1669 Merge In Between Linked Lists c++ Medium 1673 Find the Most Competitive Subsequence c++ Medium 1691 Maximum Height by Stacking Cuboids c++ Hard 1704 Determine if String Halves Are Alike c++ Easy 1732 Find the Highest Altitude c++ Easy 1739 Building Boxes c++ Hard 1742 Maximum Number of Balls in a Box c++ Easy 1750 Minimum Length of String After Deleting Similar Ends c++ Medium 1752 Check if Array Is Sorted and Rotated c++ Easy 1754 Largest Merge Of Two Strings c++ Medium 1758 Minimum Changes To Make Alternating Binary String c++ Easy 1759 Count Number of Homogenous Substrings c++ Medium 1779 Find Nearest Point That Has the Same X or Y Coordinate c++ Easy 1780 Check if Number is a Sum of Powers of Three c++ Medium 1781 Sum of Beauty of All Substrings c++ Medium 1796 Second Largest Digit in a String c++ Easy 1798 Maximum Number of Consecutive Values You Can Make c++ Medium 1801 Number of Orders in the Backlog c++ Medium 1802 Maximum Value at a Given Index in a Bounded Array c++ Medium 1805 Number of Different Integers in a String c++ Easy 1806 Minimum Number of Operations to Reinitialize a Permutation c++ Medium 1807 Evaluate the Bracket Pairs of a String c++ Medium 1812 Determine Color of a Chessboard Square c++ Easy 1813 Sentence Similarity III c++ Medium 1814 Count Nice Pairs in an Array c++ Medium 1819 Number of Different Subsequences GCDs c++ Hard 1827 Minimum Operations to Make the Array Increasing c++ Easy 1833 Maximum Ice Cream Bars c++ Medium 1834 Single-Threaded-CPU c++ Medium 1832 Check if the Sentence Is Pangram c++ python Easy 1926 Nearest Exit from Entrance in Maze c++ Medium 1962 Remove Stones to Minimize the Total c++ Medium 2011 Final Value of Variable After Performing Operations c++ Easy 2027 Minimum Moves to Convert String c++ Easy 2032 Two Out of Three c++ Easy 2037 Minimum Number of Moves to Seat Everyone c++ Easy 2042 Check if Numbers Are Ascending in a Sentence c++ Easy 2180 Count Integers With Even Digit Sum c++ Easy 2185 Counting Words With a Given Prefix c++ Easy 2225 Find Players With Zero or One Losses c++ Medium 2244 Minimum Rounds to Complete All Tasks c++ Medium 2256 Minimum Average Difference c++ Medium 2279 Maximum Bags With Full Capacity of Rocks c++ Medium 2287 Rearrange Characters to Make Target String c++ Easy 2293 Min Max Game c++ Easy 2315 Count Asterisks c++ Easy 2319 Check if Matrix Is X-Matrix c++ Easy 2325 Decode the Message c++ Easy 2331 Evaluate Boolean Binary Tree c++ Easy 2341 Maximum Number of Pairs in Array c++ Easy 2347 Best Poker Hand c++ Easy 2351 First Letter to Appear Twice c++ Easy 2357 Make Array Zero by Subtracting Equal Amounts c++ Easy 2389 Longest Subsequence With Limited Sum c++ Easy 2395 Find Subarrays With Equal Sum c++ Easy 2427 Number of Common Factors c++ Easy 2439 Minimize Maximum of Array c++ Medium 2469 Convert the temperature c++ Easy 2470 Number of Subarrays With LCM Equal to K c++ Medium 2471 Minimum Number of Operations to Sort a Binary Tree by Level c++ Medium 2477 Minimum Fuel Cost to Report to the Capital c++ Medium 2549 Count Distinct Numbers on Board c++ Easy 2550 Count Collisions of Monkeys on a Polygon c++ Medium 2551 Put Marbles in Bags c++ Hard