A command line option has enabled the security manager leetcode

v12.6.0 Active Name Version ------------------------------------ ✔ solution.discuss 2019.02.03 ✔ company 2017.12.18 ✔ cache default ✔ retry default ✘ leetcode.cn 2018.11.25 ✔ leetcode default Active Name Version ------------------------------------ ✔ solution.discuss 2019.02.03 ✔ company 2017.12.18 ✔ cache default ✔ retry default ✘ leetcode.cn 2018.11.25 ✔ leetcode default Active Name Version ------------------------------------ ✔ solution.discuss 2019.02.03 ✔ company 2017.12.18 ✔ cache default ✔ retry default ✔ leetcode.cn 2018.11.25 ✔ leetcode default Active Name Version ------------------------------------ ✔ solution.discuss 2019.02.03 ✔ company 2017.12.18 ✔ cache default ✔ retry default ✘ leetcode.cn 2018.11.25 ✔ leetcode default Premium User Host ------------------------------------ ✘ huchenme [1001] Grid Illumination [ 999] Available Captures for Rook [ 998] Maximum Binary Tree II [ 997] Find the Town Judge [ 996] Number of Squareful Arrays [ 995] Minimum Number [ 994] Rotting Oranges [ 993] Cousins in Binary Tree [ 992] Subarrays with [ 991] Broken Calculator [ 990] Satisfiability [ 989] Add to Array-Form of Integer [ 988] Smallest String [ 987] Vertical Order [ 986] Interval List Intersections [ 985] Sum of Even Numbers After Queries [ 984] String Without AAA or BBB [ 983] Minimum Cost For Tickets [ 982] Triples with [ 981] Time Based Key-Value Store [ 980] Unique Paths III [ 979] Distribute Coins in Binary Tree [ 978] Longest Turbulent Subarray [ 977] Squares of a Sorted Array [ 976] Largest Perimeter Triangle [ 975] Odd Even Jump [ 974] Subarray Sums Divisible by K [ 973] K Closest Points to Origin [ 972] Equal Rational Numbers [ 971] Flip Binary [ 970] Powerful Integers [ 969] Pancake Sorting [ 968] Binary Tree Cameras [ 967] Numbers With [ 966] Vowel Spellchecker [ 965] Univalued Binary Tree [ 964] Least Operators to Express Number [ 963] Minimum Area Rectangle II [ 962] Maximum Width Ramp [ 961] N-Repeated Element [ 960] Delete Columns to Make Sorted III [ 959] Regions Cut By Slashes [ 958] Check Completeness [ 957] Prison Cells After N Days [ 956] Tallest Billboard [ 955] Delete Columns to Make Sorted II [ 954] Array of Doubled Pairs [ 953] Verifying an Alien Dictionary [ 952] Largest Component [ 951] Flip Equivalent Binary Trees [ 950] Reveal Cards In Increasing Order [ 949] Largest Time for Given Digits [ 948] Bag of Tokens [ 947] Most Stones [ 946] Validate Stack Sequences [ 945] Minimum Increment [ 944] Delete Columns to Make Sorted [ 943] Find the Shortest Superstring [ 942] DI String Match [ 941] Valid Mountain Array [ 940] Distinct Subsequences II [ 939] Minimum Area Rectangle [ 938] Range Sum of BST [ 937] Reorder Log Files [ 936] Stamping The Sequence [ 935] Knight Dialer [ 934] Shortest Bridge [ 933] Number of Recent Calls [ 932] Beautiful Array [ 931] Minimum Falling Path Sum [ 930] Binary Subarrays With Sum [ 929] Unique Email Addresses [ 928] Minimize Malware Spread II [ 927] Three Equal Parts [ 926] Flip String [ 925] Long Pressed Name [ 924] Minimize Malware Spread [ 923] 3Sum With Multiplicity [ 922] Sort Array By Parity II [ 921] Minimum Add [ 920] Number of Music Playlists [ 919] Complete Binary Tree Inserter [ 918] Maximum Sum Circular Subarray [ 917] Reverse Only Letters [ 916] Word Subsets [ 915] Partition Array [ 914] X of a Kind in a Deck of Cards [ 913] Cat and Mouse [ 911] Online Election [ 910] Smallest Range II [ 909] Snakes and Ladders [ 908] Smallest Range I [ 907] Sum of Subarray Minimums [ 906] Super Palindromes [ 905] Sort Array By Parity [ 904] Fruit Into Baskets [ 903] Valid Permutations [ 902] Numbers At Most N Given Digit Set [ 901] Online Stock Span [ 900] RLE Iterator [ 899] Orderly Queue [ 898] Bitwise ORs of Subarrays [ 897] Increasing Order Search Tree [ 896] Monotonic Array [ 895] Maximum Frequency Stack [ 894] All Possible Full Binary Trees [ 893] Groups of Special-Equivalent [ 892] Surface Area of 3D Shapes [ 891] Sum of Subsequence Widths [ 890] Find and Replace Pattern [ 889] Construct Binary [ 888] Fair Candy Swap [ 887] Super Egg Drop [ 886] Possible Bipartition [ 885] Spiral Matrix III [ 884] Uncommon Words from Two Sentences [ 883] Projection Area of 3D Shapes [ 882] Reachable Nodes [ 881] Boats to Save People [ 880] Decoded String at Index [ 879] Profitable Schemes [ 878] Nth Magical Number [ 877] Stone Game [ 876] Middle of the Linked List [ 875] Koko Eating Bananas [ 874] Walking Robot Simulation [ 873] Length of Longest [ 872] Leaf-Similar Trees [ 871] Minimum Number of Refueling Stops [ 870] Advantage Shuffle [ 869] Reordered Power of 2 [ 868] Binary Gap [ 867] Transpose Matrix [ 866] Prime Palindrome [ 865] Smallest Subtree [ 864] Shortest Path to Get All Keys [ 863] All Nodes Distance [ 862] Shortest Subarray [ 861] Score After Flipping Matrix [ 860] Lemonade Change [ 859] Buddy Strings [ 858] Mirror Reflection [ 857] Minimum Cost to Hire K Workers [ 856] Score of Parentheses [ 855] Exam Room [ 854] K-Similar Strings [ 853] Car Fleet [ 852] Peak Index in a Mountain Array [ 851] Loud and Rich [ 850] Rectangle Area II [ 849] Maximize Distance [ 848] Shifting Letters [ 847] Shortest Path Visiting All Nodes [ 846] Hand of Straights [ 845] Longest Mountain in Array [ 844] Backspace String Compare [ 843] Guess the Word [ 842] Split Array [ 841] Keys and Rooms [ 840] Magic Squares In Grid [ 839] Similar String Groups [ 838] Push Dominoes [ 837] New 21 Game [ 836] Rectangle Overlap [ 835] Image Overlap [ 834] Sum of Distances in Tree [ 833] Find And Replace in String [ 832] Flipping an Image [ 831] Masking Personal Information [ 830] Positions of Large Groups [ 829] Consecutive Numbers Sum [ 828] Unique Letter String [ 827] Making A Large Island [ 826] Most Profit Assigning Work [ 825] Friends Of Appropriate Ages [ 824] Goat Latin [ 823] Binary Trees With Factors [ 822] Card Flipping Game [ 821] Shortest Distance to a Character [ 820] Short Encoding of Words [ 819] Most Common Word [ 818] Race Car [ 817] Linked List Components [ 816] Ambiguous Coordinates [ 815] Bus Routes [ 814] Binary Tree Pruning [ 813] Largest Sum of Averages [ 812] Largest Triangle Area [ 811] Subdomain Visit Count [ 810] Chalkboard XOR Game [ 809] Expressive Words [ 808] Soup Servings [ 807] Max Increase to Keep City Skyline [ 806] Number of Lines To Write String [ 805] Split Array With Same Average [ 804] Unique Morse Code Words [ 803] Bricks Falling When Hit [ 802] Find Eventual Safe States [ 801] Minimum Swaps [ 799] Champagne Tower [ 798] Smallest Rotation [ 797] All Paths From Source to Target [ 796] Rotate String [ 795] Number of Subarrays [ 794] Valid Tic-Tac-Toe State [ 793] Preimage Size [ 792] Number of Matching Subsequences [ 791] Custom Sort String [ 790] Domino and Tromino Tiling [ 789] Escape The Ghosts [ 788] Rotated Digits [ 787] Cheapest Flights Within K Stops [ 786] K-th Smallest Prime Fraction [ 785] Is Graph Bipartite? [ 784] Letter Case Permutation [ 783] Minimum Distance [ 782] Transform to Chessboard [ 781] Rabbits in Forest [ 780] Reaching Points [ 779] K-th Symbol in Grammar [ 778] Swim in Rising Water [ 777] Swap Adjacent in LR String [ 775] Global and Local Inversions [ 773] Sliding Puzzle [ 771] Jewels and Stones [ 770] Basic Calculator IV [ 769] Max Chunks To Make Sorted [ 768] Max Chunks To Make Sorted II [ 767] Reorganize String [ 766] Toeplitz Matrix [ 765] Couples Holding Hands [ 764] Largest Plus Sign [ 763] Partition Labels [ 762] Prime Number [ 761] Special Binary String [ 757] Set Intersection [ 756] Pyramid Transition Matrix [ 754] Reach a Number [ 753] Cracking the Safe [ 752] Open the Lock [ 749] Contain Virus [ 748] Shortest Completing Word [ 747] Largest Number [ 746] Min Cost Climbing Stairs [ 745] Prefix and Suffix Search [ 744] Find Smallest [ 743] Network Delay Time [ 741] Cherry Pickup [ 740] Delete and Earn [ 739] Daily Temperatures [ 738] Monotone Increasing Digits [ 736] Parse Lisp Expression [ 735] Asteroid Collision [ 733] Flood Fill [ 732] My Calendar III [ 731] My Calendar II [ 730] Count Different [ 729] My Calendar I [ 728] Self Dividing Numbers [ 726] Number of Atoms [ 725] Split Linked List in Parts [ 724] Find Pivot Index [ 722] Remove Comments [ 721] Accounts Merge [ 720] Longest Word in Dictionary [ 719] Find K-th Smallest Pair Distance [ 718] Maximum Length [ 717] 1-bit and 2-bit Characters [ 715] Range Module [ 714] Best Time to [ 713] Subarray Product Less Than K [ 712] Minimum ASCII [ 710] Random Pick with Blacklist [ 709] To Lower Case [ 707] Design Linked List [ 706] Design HashMap [ 705] Design HashSet [ 704] Binary Search [ 703] Kth Largest Element in a Stream [ 701] Insert into a Binary Search Tree [ 700] Search in a Binary Search Tree [ 699] Falling Squares [ 698] Partition to K Equal Sum Subsets [ 697] Degree of an Array [ 696] Count Binary Substrings [ 695] Max Area of Island [ 693] Binary Number [ 692] Top K Frequent Words [ 691] Stickers to Spell Word [ 690] Employee Importance [ 689] Maximum Sum [ 688] Knight Probability in Chessboard [ 687] Longest Univalue Path [ 686] Repeated String Match [ 685] Redundant Connection II [ 684] Redundant Connection [ 682] Baseball Game [ 680] Valid Palindrome II [ 679] 24 Game [ 678] Valid Parenthesis String [ 677] Map Sum Pairs [ 676] Implement Magic Dictionary [ 675] Cut Off Trees for Golf Event [ 674] Longest Continuous [ 673] Number of Longest [ 672] Bulb Switcher II [ 671] Second Minimum [ 670] Maximum Swap [ 669] Trim a Binary Search Tree [ 668] Kth Smallest [ 667] Beautiful Arrangement II [ 665] Non-decreasing Array [ 664] Strange Printer [ 662] Maximum Width of Binary Tree [ 661] Image Smoother [ 659] Split Array [ 658] Find K Closest Elements [ 657] Robot Return to Origin [ 655] Print Binary Tree [ 654] Maximum Binary Tree [ 653] Two Sum IV - Input is a BST [ 652] Find Duplicate Subtrees [ 650] 2 Keys Keyboard [ 649] Dota2 Senate [ 648] Replace Words [ 647] Palindromic Substrings [ 646] Maximum Length of Pair Chain [ 645] Set Mismatch [ 643] Maximum Average Subarray I [ 641] Design Circular Deque [ 640] Solve the Equation [ 639] Decode Ways II [ 638] Shopping Offers [ 637] Average of Levels in Binary Tree [ 636] Exclusive Time of Functions [ 633] Sum of Square Numbers [ 632] Smallest Range [ 630] Course Schedule III [ 629] K Inverse Pairs Array [ 628] Maximum Product of Three Numbers [ 627] Swap Salary [ 626] Exchange Seats [ 623] Add One Row to Tree [ 622] Design Circular Queue [ 621] Task Scheduler [ 620] Not Boring Movies [ 617] Merge Two Binary Trees [ 611] Valid Triangle Number [ 609] Find Duplicate File in System [ 606] Construct String from Binary Tree [ 605] Can Place Flowers [ 601] Human Traffic of Stadium [ 600] Non-negative [ 599] Minimum Index Sum of Two Lists [ 598] Range Addition II [ 596] Classes More Than 5 Students [ 595] Big Countries [ 594] Longest Harmonious Subsequence [ 593] Valid Square [ 592] Fraction Addition and Subtraction [ 591] Tag Validator [ 590] N-ary Tree Postorder Traversal [ 589] N-ary Tree Preorder Traversal [ 587] Erect the Fence [ 583] Delete Operation for Two Strings [ 581] Shortest Unsorted [ 576] Out of Boundary Paths [ 575] Distribute Candies [ 572] Subtree of Another Tree [ 567] Permutation in String [ 566] Reshape the Matrix [ 565] Array Nesting [ 564] Find the Closest Palindrome [ 563] Binary Tree Tilt [ 561] Array Partition I [ 560] Subarray Sum Equals K [ 559] Maximum Depth of N-ary Tree [ 558] Quad Tree Intersection [ 557] Reverse Words in a String III [ 556] Next Greater Element III [ 554] Brick Wall [ 553] Optimal Division [ 552] Student Attendance Record II [ 551] Student Attendance Record I [ 547] Friend Circles [ 546] Remove Boxes [ 543] Diameter of Binary Tree [ 542] 01 Matrix [ 541] Reverse String II [ 540] Single Element in a Sorted Array [ 539] Minimum Time Difference [ 538] Convert BST to Greater Tree [ 537] Complex Number Multiplication [ 535] Encode and Decode TinyURL [ 532] K-diff Pairs in an Array [ 530] Minimum Absolute [ 529] Minesweeper [ 528] Random Pick with Weight [ 526] Beautiful Arrangement [ 525] Contiguous Array [ 524] Longest Word [ 523] Continuous Subarray Sum [ 522] Longest Uncommon Subsequence II [ 521] Longest Uncommon Subsequence I [ 520] Detect Capital [ 519] Random Flip Matrix [ 518] Coin Change 2 [ 517] Super Washing Machines [ 516] Longest Palindromic Subsequence [ 515] Find Largest [ 514] Freedom Trail [ 513] Find Bottom Left Tree Value [ 509] Fibonacci Number [ 508] Most Frequent Subtree Sum [ 507] Perfect Number [ 506] Relative Ranks [ 504] Base 7 [ 503] Next Greater Element II [ 502] IPO [ 501] Find Mode in Binary Search Tree [ 500] Keyboard Row [ 498] Diagonal Traverse [ 497] Random Point [ 496] Next Greater Element I [ 495] Teemo Attacking [ 494] Target Sum [ 493] Reverse Pairs [ 492] Construct the Rectangle [ 491] Increasing Subsequences [ 488] Zuma Game [ 486] Predict the Winner [ 485] Max Consecutive Ones [ 483] Smallest Good Base [ 482] License Key Formatting [ 481] Magical String [ 480] Sliding Window Median [ 479] Largest Palindrome Product [ 478] Generate Random Point in a Circle [ 477] Total Hamming Distance [ 476] Number Complement [ 475] Heaters [ 474] Ones and Zeroes [ 473] Matchsticks to Square [ 472] Concatenated Words [ 470] Implement Rand10() Using Rand7() [ 468] Validate IP Address [ 467] Unique Substrings [ 466] Count The Repetitions [ 464] Can I Win [ 463] Island Perimeter [ 462] Minimum Moves [ 461] Hamming Distance [ 460] LFU Cache [ 459] Repeated Substring Pattern [ 458] Poor Pigs [ 457] Circular Array Loop [ 456] 132 Pattern [ 455] Assign Cookies [ 454] 4Sum II [ 453] Minimum Moves [ 452] Minimum Number [ 451] Sort Characters By Frequency [ 450] Delete Node in a BST [ 449] Serialize and Deserialize BST [ 448] Find All Numbers [ 447] Number of Boomerangs [ 446] Arithmetic Slices [ 445] Add Two Numbers II [ 443] String Compression [ 442] Find All Duplicates in an Array [ 441] Arranging Coins [ 440] K-th Smallest [ 438] Find All Anagrams in a String [ 437] Path Sum III [ 436] Find Right Interval [ 435] Non-overlapping Intervals [ 434] Number of Segments in a String [ 433] Minimum Genetic Mutation [ 432] All O`one Data Structure [ 430] Flatten a Multilevel [ 429] N-ary Tree Level Order Traversal [ 427] Construct Quad Tree [ 424] Longest Repeating [ 423] Reconstruct [ 421] Maximum XOR [ 420] Strong Password Checker [ 419] Battleships in a Board [ 417] Pacific Atlantic Water Flow [ 416] Partition Equal Subset Sum [ 415] Add Strings [ 414] Third Maximum Number [ 413] Arithmetic Slices [ 412] Fizz Buzz [ 410] Split Array Largest Sum [ 409] Longest Palindrome [ 407] Trapping Rain Water II [ 406] Queue Reconstruction by Height [ 405] Convert a Number to Hexadecimal [ 404] Sum of Left Leaves [ 403] Frog Jump [ 402] Remove K Digits [ 401] Binary Watch [ 400] Nth Digit [ 399] Evaluate Division [ 398] Random Pick Index [ 397] Integer Replacement [ 396] Rotate Function [ 395] Longest Substring [ 394] Decode String [ 393] UTF-8 Validation [ 392] Is Subsequence [ 391] Perfect Rectangle [ 390] Elimination Game [ 389] Find the Difference [ 388] Longest Absolute File Path [ 387] First Unique [ 386] Lexicographical Numbers [ 385] Mini Parser [ 384] Shuffle an Array [ 383] Ransom Note [ 382] Linked List Random Node [ 381] Insert Delete [ 380] Insert Delete GetRandom O(1) [ 378] Kth Smallest [ 377] Combination Sum IV [ 376] Wiggle Subsequence [ 375] Guess Number Higher or Lower II [ 374] Guess Number Higher or Lower [ 373] Find K Pairs with Smallest Sums [ 372] Super Pow [ 371] Sum of Two Integers [ 368] Largest Divisible Subset [ 367] Valid Perfect Square [ 365] Water and Jug Problem [ 363] Max Sum of Rectangle [ 357] Count Numbers with Unique Digits [ 355] Design Twitter [ 354] Russian Doll Envelopes [ 352] Data Stream as Disjoint Intervals [ 350] Intersection of Two Arrays II [ 349] Intersection of Two Arrays [ 347] Top K Frequent Elements [ 345] Reverse Vowels of a String [ 344] Reverse String [ 343] Integer Break [ 342] Power of Four [ 341] Flatten Nested List Iterator [ 338] Counting Bits [ 337] House Robber III [ 336] Palindrome Pairs [ 335] Self Crossing [ 334] Increasing Triplet Subsequence [ 332] Reconstruct Itinerary [ 331] Verify Preorder [ 330] Patching Array [ 329] Longest Increasing [ 328] Odd Even Linked List [ 327] Count of Range Sum [ 326] Power of Three [ 324] Wiggle Sort II [ 322] Coin Change [ 321] Create Maximum Number [ 319] Bulb Switcher [ 318] Maximum Product of Word Lengths [ 316] Remove Duplicate Letters [ 315] Count of Smaller [ 313] Super Ugly Number [ 312] Burst Balloons [ 310] Minimum Height Trees [ 309] Best Time to [ 307] Range Sum Query - Mutable [ 306] Additive Number [ 304] Range Sum Query 2D - Immutable [ 303] Range Sum Query - Immutable [ 301] Remove Invalid Parentheses [ 300] Longest Increasing Subsequence [ 299] Bulls and Cows [ 297] Serialize and [ 295] Find Median from Data Stream [ 292] Nim Game [ 290] Word Pattern [ 289] Game of Life [ 287] Find the Duplicate Number [ 284] Peeking Iterator [ 283] Move Zeroes [ 282] Expression Add Operators [ 279] Perfect Squares [ 278] First Bad Version [ 275] H-Index II [ 274] H-Index [ 273] Integer to English Words [ 268] Missing Number [ 264] Ugly Number II [ 263] Ugly Number [ 262] Trips and Users [ 260] Single Number III [ 258] Add Digits [ 257] Binary Tree Paths [ 242] Valid Anagram [ 241] Different Ways to Add Parentheses [ 240] Search a 2D Matrix II [ 239] Sliding Window Maximum [ 238] Product of Array Except Self ✔ [ 237] Delete Node in a Linked List [ 236] Lowest Common [ 235] Lowest Common [ 234] Palindrome Linked List [ 233] Number of Digit One [ 232] Implement Queue using Stacks [ 231] Power of Two [ 230] Kth Smallest Element in a BST [ 229] Majority Element II [ 228] Summary Ranges [ 227] Basic Calculator II [ 226] Invert Binary Tree [ 225] Implement Stack using Queues [ 224] Basic Calculator [ 223] Rectangle Area [ 222] Count Complete Tree Nodes ✔ [ 221] Maximal Square [ 220] Contains Duplicate III [ 219] Contains Duplicate II [ 218] The Skyline Problem [ 217] Contains Duplicate [ 216] Combination Sum III ✔ [ 215] Kth Largest Element in an Array [ 214] Shortest Palindrome [ 213] House Robber II [ 212] Word Search II [ 211] Add and Search [ 210] Course Schedule II [ 209] Minimum Size Subarray Sum [ 208] Implement Trie (Prefix Tree) [ 207] Course Schedule [ 206] Reverse Linked List [ 205] Isomorphic Strings [ 204] Count Primes [ 203] Remove Linked List Elements [ 202] Happy Number [ 201] Bitwise AND of Numbers Range [ 200] Number of Islands [ 199] Binary Tree Right Side View [ 198] House Robber [ 197] Rising Temperature [ 196] Delete Duplicate Emails [ 195] Tenth Line [ 194] Transpose File [ 193] Valid Phone Numbers [ 192] Word Frequency [ 191] Number of 1 Bits [ 190] Reverse Bits [ 189] Rotate Array [ 188] Best Time to [ 187] Repeated DNA Sequences [ 185] Department Top Three Salaries [ 184] Department Highest Salary [ 183] Customers Who Never Order [ 182] Duplicate Emails [ 181] Employees Earning [ 180] Consecutive Numbers [ 179] Largest Number [ 178] Rank Scores [ 177] Nth Highest Salary [ 176] Second Highest Salary [ 175] Combine Two Tables [ 174] Dungeon Game [ 173] Binary Search Tree Iterator [ 172] Factorial Trailing Zeroes [ 171] Excel Sheet Column Number [ 169] Majority Element [ 168] Excel Sheet Column Title [ 167] Two Sum II - [ 166] Fraction to Recurring Decimal [ 165] Compare Version Numbers [ 164] Maximum Gap [ 162] Find Peak Element [ 160] Intersection of Two Linked Lists [ 155] Min Stack [ 154] Find Minimum [ 153] Find Minimum [ 152] Maximum Product Subarray [ 151] Reverse Words in a String [ 150] Evaluate Reverse Polish Notation [ 149] Max Points on a Line [ 148] Sort List [ 147] Insertion Sort List [ 146] LRU Cache [ 145] Binary Tree Postorder Traversal [ 144] Binary Tree Preorder Traversal [ 143] Reorder List [ 142] Linked List Cycle II [ 141] Linked List Cycle [ 140] Word Break II [ 139] Word Break [ 138] Copy List with Random Pointer [ 137] Single Number II [ 136] Single Number [ 135] Candy [ 134] Gas Station [ 133] Clone Graph [ 132] Palindrome Partitioning II [ 131] Palindrome Partitioning [ 130] Surrounded Regions [ 129] Sum Root to Leaf Numbers [ 128] Longest Consecutive Sequence [ 127] Word Ladder [ 126] Word Ladder II [ 125] Valid Palindrome [ 124] Binary Tree Maximum Path Sum [ 123] Best Time to [ 122] Best Time to [ 121] Best Time to Buy and Sell Stock [ 120] Triangle [ 119] Pascal's Triangle II ✔ [ 118] Pascal's Triangle [ 117] Populating Next [ 116] Populating Next [ 115] Distinct Subsequences [ 114] Flatten Binary [ 113] Path Sum II [ 112] Path Sum [ 111] Minimum Depth of Binary Tree [ 110] Balanced Binary Tree [ 109] Convert Sorted ✔ [ 108] Convert Sorted [ 107] Binary Tree [ 106] Construct Binary [ 105] Construct Binary ✔ [ 104] Maximum Depth of Binary Tree [ 103] Binary Tree ✔ [ 102] Binary Tree [ 101] Symmetric Tree [ 100] Same Tree [ 99 ] Recover Binary Search Tree [ 98 ] Validate Binary Search Tree [ 97 ] Interleaving String [ 96 ] Unique Binary Search Trees [ 95 ] Unique Binary Search Trees II [ 94 ] Binary Tree Inorder Traversal [ 93 ] Restore IP Addresses [ 92 ] Reverse Linked List II [ 91 ] Decode Ways [ 90 ] Subsets II [ 89 ] Gray Code [ 88 ] Merge Sorted Array [ 87 ] Scramble String [ 86 ] Partition List [ 85 ] Maximal Rectangle [ 84 ] Largest Rectangle in Histogram [ 83 ] Remove Duplicates [ 82 ] Remove Duplicates [ 81 ] Search in Rotated Sorted Array II [ 80 ] Remove Duplicates [ 79 ] Word Search [ 78 ] Subsets [ 77 ] Combinations [ 76 ] Minimum Window Substring [ 75 ] Sort Colors [ 74 ] Search a 2D Matrix [ 73 ] Set Matrix Zeroes [ 72 ] Edit Distance [ 71 ] Simplify Path ✔ [ 70 ] Climbing Stairs ✔ [ 69 ] Sqrt(x) [ 68 ] Text Justification [ 67 ] Add Binary [ 66 ] Plus One [ 65 ] Valid Number [ 64 ] Minimum Path Sum [ 63 ] Unique Paths II [ 62 ] Unique Paths [ 61 ] Rotate List [ 60 ] Permutation Sequence [ 59 ] Spiral Matrix II [ 58 ] Length of Last Word [ 57 ] Insert Interval [ 56 ] Merge Intervals [ 55 ] Jump Game [ 54 ] Spiral Matrix ✔ [ 53 ] Maximum Subarray [ 52 ] N-Queens II [ 51 ] N-Queens [ 50 ] Pow(x, n) [ 49 ] Group Anagrams ✔ [ 48 ] Rotate Image [ 47 ] Permutations II [ 46 ] Permutations [ 45 ] Jump Game II [ 44 ] Wildcard Matching [ 43 ] Multiply Strings ✔ [ 42 ] Trapping Rain Water [ 41 ] First Missing Positive [ 40 ] Combination Sum II [ 39 ] Combination Sum [ 38 ] Count and Say [ 37 ] Sudoku Solver ✔ [ 36 ] Valid Sudoku [ 35 ] Search Insert Position [ 34 ] Find First and [ 33 ] Search in Rotated Sorted Array [ 32 ] Longest Valid Parentheses [ 31 ] Next Permutation [ 30 ] Substring with [ 29 ] Divide Two Integers ✔ [ 28 ] Implement strStr() [ 27 ] Remove Element [ 26 ] Remove Duplicates [ 25 ] Reverse Nodes in k-Group [ 24 ] Swap Nodes in Pairs [ 23 ] Merge k Sorted Lists [ 22 ] Generate Parentheses ✔ [ 21 ] Merge Two Sorted Lists [ 20 ] Valid Parentheses [ 19 ] Remove Nth Node From End of List [ 18 ] 4Sum [ 17 ] Letter Combinations [ 16 ] 3Sum Closest [ 15 ] 3Sum [ 14 ] Longest Common Prefix [ 13 ] Roman to Integer [ 12 ] Integer to Roman [ 11 ] Container With Most Water [ 10 ] Regular Expression Matching [ 9 ] Palindrome Number ✔ [ 8 ] String to Integer (atoi) ✔ [ 7 ] Reverse Integer [ 6 ] ZigZag Conversion ✔ [ 5 ] Longest Palindromic Substring ✔ [ 4 ] Median of Two Sorted Arrays ✔ [ 3 ] Longest Substring ✔ [ 2 ] Add Two Numbers ✔ [ 1 ] Two Sum [40] Combination Sum II //leetcode.com/problems/combination- Tags: algorithms snapchat Langs: c cpp csharp golang * algorithms * Medium (40.14%) * Likes: 929 * Dislikes: 49 * Total Accepted: 234.1K * Total Submissions: 550.8K * Testcase Example: '[10,1,2,7,6,1, Given a collection Each number in <code> Note:</str <ul> <li>All numbers (including <li>The solution set </ul> Example <pre> Input: A solution set [ [1, 7], [1, 2, 5], [2, 6], [1, 1, 6] ] </pre> Example <pre> Input: A solution set [   [1,2,2],   [5] ] </pre> Desc ---------------------------------------------------------------- Plugin to fetch most voted solution in discussions. Plugin to query by company for free user. Plugin to provide local cache. Plugin to retry last failed request if autologin.enable is on. Plugin to talk with leetcode-cn APIs. Plugin to talk with leetcode APIs. Desc ---------------------------------------------------------------- Plugin to fetch most voted solution in discussions. Plugin to query by company for free user. Plugin to provide local cache. Plugin to retry last failed request if autologin.enable is on. Plugin to talk with leetcode-cn APIs. Plugin to talk with leetcode APIs. Desc ---------------------------------------------------------------- Plugin to fetch most voted solution in discussions. Plugin to query by company for free user. Plugin to provide local cache. Plugin to retry last failed request if autologin.enable is on. Plugin to talk with leetcode-cn APIs. Plugin to talk with leetcode APIs. Desc ---------------------------------------------------------------- Plugin to fetch most voted solution in discussions. 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Plugin to talk with leetcode APIs. ------------------------ //leetcode.com Hard (33.60 %) Easy (71.83 %) Medium (62.91 %) Easy (47.92 %) Hard (48.16 %) of K Consecutive Bit Flips Hard (51.72 %) Easy (46.52 %) Easy (53.78 %) K Different Integers Hard (45.14 %) Medium (38.53 %) of Equality Equations Medium (38.60 %) Easy (45.00 %) Starting From Leaf Medium (52.66 %) Traversal of a Binary Tree Medium (33.26 %) Medium (61.15 %) Easy (68.35 %) Easy (32.29 %) Medium (58.18 %) Bitwise AND Equal To Zero Hard (53.43 %) Medium (48.97 %) Hard (73.06 %) Medium (65.87 %) Medium (45.88 %) Easy (73.15 %) Easy (56.92 %) Hard (50.64 %) Medium (41.39 %) Easy (66.38 %) Hard (39.73 %) Tree To Match Preorder Traversal Medium (42.28 %) Easy (39.67 %) Medium (61.96 %) Hard (33.67 %) Same Consecutive Differences Medium (35.90 %) Medium (39.34 %) Easy (67.67 %) Hard (39.91 %) Medium (41.95 %) Medium (40.31 %) in Size 2N Array Easy (73.45 %) Hard (52.00 %) Medium (61.37 %) of a Binary Tree Medium (46.11 %) Medium (37.71 %) Hard (37.28 %) Medium (30.68 %) Medium (33.96 %) Easy (56.31 %) Size by Common Factor Hard (25.13 %) Medium (64.96 %) Medium (71.15 %) Easy (33.24 %) Medium (38.78 %) Removed with Same Row or Column Medium (53.54 %) Medium (57.65 %) to Make Array Unique Medium (42.18 %) Easy (69.82 %) Hard (34.77 %) Easy (70.21 %) Easy (34.66 %) Hard (37.61 %) Medium (49.23 %) Medium (80.61 %) Easy (58.90 %) Hard (35.47 %) Medium (38.49 %) Medium (43.71 %) Easy (68.97 %) Medium (51.15 %) Medium (57.58 %) Medium (36.52 %) Easy (76.15 %) Hard (38.01 %) Hard (29.93 %) to Monotone Increasing Medium (48.19 %) Easy (44.34 %) Hard (38.77 %) Medium (32.09 %) Easy (66.70 %) to Make Parentheses Valid Medium (69.51 %) Hard (42.73 %) Medium (54.53 %) Medium (29.63 %) Easy (55.91 %) Medium (44.07 %) into Disjoint Intervals Medium (41.91 %) Easy (34.51 %) Hard (26.89 %) Medium (44.26 %) Medium (22.55 %) Medium (30.10 %) Easy (64.40 %) Medium (25.29 %) Hard (29.68 %) Easy (72.13 %) Medium (40.87 %) for DI Sequence Hard (41.89 %) Hard (27.57 %) Medium (46.68 %) Medium (48.65 %) Hard (46.26 %) Medium (32.92 %) Easy (62.86 %) Easy (54.55 %) Hard (52.33 %) Medium (69.27 %) Strings Easy (61.79 %) Easy (55.52 %) Hard (28.14 %) Medium (70.13 %) Tree from Preorder and Postorder Traversal Medium (57.87 %) Easy (55.93 %) Hard (24.66 %) Medium (40.11 %) Medium (63.48 %) Easy (60.59 %) Easy (65.26 %) In Subdivided Graph Hard (36.60 %) Medium (42.80 %) Medium (23.03 %) Hard (35.56 %) Hard (24.58 %) Medium (60.46 %) Easy (63.29 %) Medium (44.39 %) Easy (30.73 %) Fibonacci Subsequence Medium (45.52 %) Easy (62.16 %) Hard (28.09 %) Medium (41.50 %) Medium (49.90 %) Easy (59.27 %) Easy (63.69 %) Medium (19.14 %) with all the Deepest Nodes Medium (54.29 %) Hard (35.27 %) K in Binary Tree Medium (45.50 %) with Sum at Least K Hard (21.66 %) Medium (68.68 %) Easy (50.32 %) Easy (27.51 %) Medium (51.36 %) Hard (46.74 %) Medium (55.11 %) Medium (37.08 %) Hard (32.46 %) Medium (38.37 %) Easy (69.02 %) Medium (46.61 %) Hard (43.63 %) to Closest Person Easy (40.44 %) Medium (39.45 %) Hard (45.44 %) Medium (48.38 %) Medium (33.79 %) Easy (45.23 %) Hard (42.13 %) into Fibonacci Sequence Medium (34.60 %) Medium (59.18 %) Easy (35.17 %) Hard (33.74 %) Medium (42.92 %) Medium (29.94 %) Easy (45.65 %) Medium (50.56 %) Hard (38.34 %) Medium (44.62 %) Easy (71.46 %) Medium (41.55 %) Easy (47.43 %) Hard (32.20 %) Hard (38.25 %) Hard (42.36 %) Medium (34.75 %) Medium (35.21 %) Easy (56.84 %) Medium (31.61 %) Medium (39.72 %) Easy (62.71 %) Medium (46.09 %) Easy (41.70 %) Hard (33.99 %) Medium (53.82 %) Medium (43.41 %) Hard (38.88 %) Medium (69.90 %) Medium (43.83 %) Easy (55.00 %) Easy (63.83 %) Hard (43.16 %) Medium (42.19 %) Medium (35.88 %) Medium (80.99 %) Easy (62.49 %) Hard (23.71 %) Easy (74.01 %) Hard (27.72 %) Medium (42.57 %) To Make Sequences Increasing Medium (33.95 %) Medium (33.40 %) with Highest Score Hard (38.70 %) Medium (69.51 %) Easy (48.73 %) with Bounded Maximum Medium (42.48 %) Medium (28.82 %) of Factorial Zeroes Function Hard (39.33 %) Medium (41.51 %) Medium (60.92 %) Medium (34.97 %) Medium (54.85 %) Easy (53.09 %) Medium (33.97 %) Hard (38.71 %) Medium (42.18 %) Easy (55.29 %) Between BST Nodes Easy (49.90 %) Hard (39.37 %) Medium (50.69 %) Hard (27.05 %) Medium (37.79 %) Hard (46.78 %) Medium (32.77 %) Medium (37.83 %) Hard (50.46 %) Easy (82.73 %) Hard (44.47 %) Medium (50.98 %) Hard (45.09 %) Medium (41.12 %) Easy (61.15 %) Hard (50.79 %) Medium (42.64 %) Medium (68.34 %) of Set Bits in Binary Representation Easy (57.87 %) Hard (49.61 %) Size At Least Two Hard (36.25 %) Medium (50.36 %) Easy (31.59 %) Hard (44.71 %) Medium (44.44 %) Hard (40.41 %) Easy (53.39 %) At Least Twice of Others Easy (40.24 %) Easy (45.93 %) Hard (29.38 %) Letter Greater Than Target Easy (43.55 %) Medium (40.07 %) Hard (27.82 %) Medium (45.04 %) Medium (59.02 %) Medium (41.24 %) Hard (43.33 %) Medium (37.73 %) Easy (49.81 %) Hard (53.39 %) Medium (43.03 %) Palindromic Subsequences Hard (37.67 %) Medium (46.35 %) Easy (69.01 %) Hard (44.05 %) Medium (48.56 %) Easy (40.52 %) Medium (30.31 %) Medium (38.80 %) Easy (43.70 %) Hard (28.57 %) of Repeated Subarray Medium (44.83 %) Easy (48.88 %) Hard (34.26 %) Buy and Sell Stock with Transaction Fee Medium (49.45 %) Medium (35.83 %) Delete Sum for Two Strings Medium (53.32 %) Hard (30.59 %) Easy (76.23 %) Easy (23.04 %) Easy (54.35 %) Easy (50.45 %) Easy (45.16 %) Easy (44.84 %) Medium (73.71 %) Easy (66.77 %) Hard (39.50 %) Medium (41.22 %) Easy (49.14 %) Easy (52.51 %) Medium (55.93 %) with Alternating Bits Easy (57.53 %) Medium (44.78 %) Hard (37.45 %) Easy (53.14 %) of 3 Non-Overlapping Subarrays Hard (43.68 %) Medium (42.84 %) Easy (33.36 %) Easy (31.31 %) Hard (30.04 %) Medium (50.26 %) Easy (60.24 %) Easy (33.75 %) Hard (41.56 %) Medium (32.03 %) Medium (51.22 %) Medium (50.94 %) Hard (30.01 %) Increasing Subsequence Easy (43.77 %) Increasing Subsequence Medium (33.12 %) Medium (49.42 %) Node In a Binary Tree Easy (43.36 %) Medium (39.27 %) Easy (59.74 %) Number in Multiplication Table Hard (40.93 %) Medium (51.47 %) Easy (19.51 %) Hard (35.45 %) Medium (39.82 %) Easy (47.89 %) into Consecutive Subsequences Medium (39.79 %) Medium (37.21 %) Easy (70.76 %) Medium (51.03 %) Medium (75.06 %) Easy (51.82 %) Medium (44.17 %) Medium (46.08 %) Medium (37.14 %) Medium (50.71 %) Medium (55.80 %) Medium (47.95 %) Easy (40.41 %) Easy (39.02 %) Medium (48.75 %) Medium (39.88 %) Hard (24.67 %) Medium (47.83 %) Easy (58.00 %) Medium (47.95 %) Easy (32.80 %) Hard (46.09 %) Hard (30.87 %) Hard (28.73 %) Easy (45.55 %) Easy (67.55 %) Medium (52.96 %) Medium (46.90 %) Medium (38.17 %) Medium (44.34 %) Easy (61.29 %) Easy (69.18 %) Medium (44.37 %) Medium (54.07 %) Easy (51.05 %) Easy (30.68 %) Hard (35.47 %) Integers without Consecutive Ones Hard (32.42 %) Easy (47.24 %) Easy (48.44 %) Easy (34.75 %) Easy (73.11 %) Easy (43.02 %) Medium (40.13 %) Medium (46.55 %) Hard (31.76 %) Easy (66.10 %) Easy (66.11 %) Hard (34.10 %) Medium (44.23 %) Continuous Subarray Easy (29.59 %) Medium (31.30 %) Easy (59.15 %) Easy (41.25 %) Medium (37.71 %) Easy (58.45 %) Medium (51.67 %) Hard (18.12 %) Easy (46.89 %) Easy (68.31 %) Medium (41.59 %) Easy (64.46 %) Easy (39.63 %) Easy (63.11 %) Medium (29.73 %) Medium (47.33 %) Medium (55.05 %) Hard (32.33 %) Easy (45.15 %) Medium (52.51 %) Hard (37.44 %) Easy (46.21 %) Medium (34.68 %) Easy (45.03 %) Medium (57.03 %) Medium (47.25 %) Easy (49.94 %) Medium (65.01 %) Medium (75.83 %) Easy (29.34 %) Difference in BST Easy (49.79 %) Medium (51.78 %) Medium (42.49 %) Medium (53.94 %) Medium (42.34 %) in Dictionary through Deleting Medium (45.00 %) Medium (24.13 %) Medium (32.68 %) Easy (56.12 %) Easy (52.23 %) Medium (32.41 %) Medium (41.41 %) Hard (36.74 %) Medium (45.40 %) Value in Each Tree Row Medium (57.22 %) Hard (40.28 %) Medium (57.89 %) Easy (66.52 %) Medium (53.83 %) Easy (33.53 %) Easy (47.91 %) Easy (44.57 %) Medium (50.10 %) Hard (37.32 %) Easy (38.88 %) Easy (61.66 %) Medium (44.98 %) in Non-overlapping Rectangles Medium (35.17 %) Easy (58.70 %) Medium (51.96 %) Medium (44.82 %) Hard (22.59 %) Easy (48.39 %) Medium (41.40 %) Hard (37.58 %) Medium (46.65 %) Easy (54.46 %) Hard (34.04 %) Easy (40.24 %) Medium (45.74 %) Hard (31.50 %) Hard (27.11 %) Medium (35.98 %) Medium (48.55 %) Easy (62.04 %) Easy (31.08 %) Medium (39.29 %) Medium (35.72 %) Hard (33.30 %) Medium (44.26 %) Medium (20.92 %) in Wraparound String Medium (33.41 %) Hard (27.39 %) Medium (26.85 %) Easy (60.27 %) to Equal Array Elements II Medium (52.32 %) Easy (70.01 %) Hard (28.06 %) Easy (39.40 %) Hard (44.89 %) Medium (27.32 %) Medium (27.42 %) Easy (48.05 %) Medium (49.82 %) to Equal Array Elements Easy (49.00 %) of Arrows to Burst Balloons Medium (45.70 %) Medium (54.99 %) Medium (39.22 %) Medium (45.82 %) Disappeared in an Array Easy (52.72 %) Easy (49.16 %) II - Subsequence Hard (29.86 %) Medium (49.19 %) Easy (36.81 %) Medium (59.93 %) Easy (37.46 %) in Lexicographical Order Hard (26.18 %) Easy (36.37 %) Easy (41.95 %) Medium (42.30 %) Medium (41.35 %) Easy (36.65 %) Medium (37.41 %) Hard (28.91 %) Doubly Linked List Medium (40.33 %) Easy (58.34 %) Easy (54.54 %) Character Replacement Medium (43.54 %) Original Digits from English Medium (45.38 %) of Two Numbers in an Array Medium (50.43 %) Hard (17.99 %) Medium (65.10 %) Medium (36.67 %) Medium (39.86 %) Easy (43.02 %) Easy (28.64 %) Medium (55.27 %) Easy (58.85 %) Hard (41.66 %) Easy (47.43 %) Hard (38.82 %) Medium (58.89 %) Easy (41.68 %) Easy (48.70 %) Hard (35.39 %) Medium (26.15 %) Easy (45.05 %) Easy (30.09 %) Medium (46.60 %) Medium (48.85 %) Medium (31.06 %) Medium (34.90 %) with At Least K Repeating Characters Medium (37.85 %) Medium (43.83 %) Medium (35.46 %) Medium (46.19 %) Hard (27.96 %) Medium (43.31 %) Easy (52.69 %) Medium (38.70 %) Character in a String Easy (49.15 %) Medium (44.79 %) Medium (31.55 %) Medium (49.44 %) Easy (49.25 %) Medium (48.75 %) GetRandom O(1) - Duplicates allowed Hard (31.45 %) Medium (41.97 %) Element in a Sorted Matrix Medium (48.38 %) Medium (43.72 %) Medium (36.89 %) Medium (37.20 %) Easy (38.71 %) Medium (33.19 %) Medium (35.44 %) Easy (51.22 %) Medium (34.48 %) Easy (39.38 %) Medium (28.72 %) No Larger Than K Hard (34.74 %) Medium (46.61 %) Medium (26.87 %) Hard (33.57 %) Hard (42.90 %) Easy (46.74 %) Easy (52.89 %) Medium (53.43 %) Easy (40.84 %) Easy (62.75 %) Medium (47.31 %) Easy (39.97 %) Medium (46.77 %) Medium (63.97 %) Medium (47.32 %) Hard (30.14 %) Hard (26.87 %) Medium (39.44 %) Medium (30.56 %) Serialization of a Binary Tree Medium (38.16 %) Hard (33.17 %) Path in a Matrix Hard (39.24 %) Medium (48.11 %) Hard (32.02 %) Easy (41.38 %) Medium (27.49 %) Medium (29.11 %) Hard (25.16 %) Medium (43.63 %) Medium (47.82 %) Hard (31.92 %) Numbers After Self Hard (37.28 %) Medium (40.55 %) Hard (46.24 %) Medium (29.75 %) Buy and Sell Stock with Cooldown Medium (43.45 %) Medium (27.47 %) Medium (28.15 %) Medium (31.18 %) Easy (36.63 %) Hard (38.39 %) Medium (40.19 %) Medium (38.62 %) Deserialize Binary Tree Hard (39.35 %) Hard (34.87 %) Easy (55.48 %) Easy (34.52 %) Medium (43.35 %) Medium (48.31 %) Medium (39.39 %) Easy (53.60 %) Hard (32.23 %) Medium (40.80 %) Easy (28.94 %) Medium (35.16 %) Medium (34.40 %) Hard (23.85 %) Easy (47.52 %) Medium (35.56 %) Easy (40.35 %) Hard (23.37 %) Medium (56.13 %) Easy (53.51 %) Easy (44.98 %) Easy (50.92 %) Medium (48.88 %) Medium (40.26 %) Hard (37.08 %) Medium (53.84 %) Easy (51.97 %) Ancestor of a Binary Tree Medium (35.41 %) Ancestor of a Binary Search Tree Easy (43.42 %) Easy (35.30 %) Hard (29.87 %) Easy (42.02 %) Easy (41.62 %) Medium (49.91 %) Medium (31.28 %) Medium (35.18 %) Medium (32.60 %) Easy (57.00 %) Easy (37.96 %) Hard (31.73 %) Medium (35.50 %) Medium (31.40 %) Medium (32.24 %) Medium (19.42 %) Easy (34.69 %) Hard (31.05 %) Easy (50.79 %) Medium (50.45 %) Medium (45.94 %) Hard (27.05 %) Medium (35.07 %) Hard (27.56 %) Word - Data structure design Medium (29.14 %) Medium (33.63 %) Medium (34.23 %) Medium (36.74 %) Medium (36.65 %) Easy (52.72 %) Easy (36.71 %) Easy (28.23 %) Easy (35.24 %) Easy (44.27 %) Medium (35.54 %) Medium (40.26 %) Medium (46.58 %) Easy (40.77 %) Easy (33.61 %) Easy (30.67 %) Easy (34.03 %) Medium (22.34 %) Easy (25.02 %) Medium (26.60 %) Easy (41.98 %) Easy (30.18 %) Easy (28.92 %) Buy and Sell Stock IV Hard (25.91 %) Medium (35.33 %) Hard (23.82 %) Medium (27.00 %) Easy (42.80 %) Easy (52.42 %) More Than Their Managers Easy (46.32 %) Medium (32.06 %) Medium (25.23 %) Medium (34.72 %) Medium (24.82 %) Easy (26.14 %) Easy (49.25 %) Hard (26.47 %) Medium (47.06 %) Easy (37.26 %) Easy (50.84 %) Easy (51.49 %) Easy (28.51 %) Input array is sorted Easy (49.30 %) Medium (19.17 %) Medium (22.68 %) Hard (31.83 %) Medium (40.72 %) Easy (32.27 %) Easy (35.64 %) in Rotated Sorted Array II Hard (38.96 %) in Rotated Sorted Array Medium (42.46 %) Medium (28.53 %) Medium (15.87 %) Medium (31.33 %) Hard (15.55 %) Medium (33.91 %) Medium (36.38 %) Hard (24.00 %) Hard (46.87 %) Medium (50.23 %) Medium (29.79 %) Medium (30.89 %) Easy (35.73 %) Hard (26.65 %) Medium (34.32 %) Medium (25.73 %) Medium (45.13 %) Easy (58.99 %) Hard (27.72 %) Medium (32.88 %) Medium (25.22 %) Hard (26.70 %) Medium (39.57 %) Medium (22.10 %) Medium (41.39 %) Hard (40.87 %) Medium (22.94 %) Hard (16.98 %) Easy (30.21 %) Hard (29.29 %) Buy and Sell Stock III Hard (32.91 %) Buy and Sell Stock II Easy (50.89 %) Easy (46.21 %) Medium (38.31 %) Easy (42.03 %) Easy (44.54 %) Right Pointers in Each Node II Medium (33.47 %) Right Pointers in Each Node Medium (36.74 %) Hard (34.51 %) Tree to Linked List Medium (41.08 %) Medium (39.42 %) Easy (37.02 %) Easy (34.84 %) Easy (40.35 %) List to Binary Search Tree Medium (39.56 %) Array to Binary Search Tree Easy (49.24 %) Level Order Traversal II Easy (45.63 %) Tree from Inorder and Postorder Traversal Medium (37.93 %) Tree from Preorder and Inorder Traversal Medium (39.44 %) Easy (59.18 %) Zigzag Level Order Traversal Medium (40.44 %) Level Order Traversal Medium (47.01 %) Easy (42.70 %) Easy (49.39 %) Hard (33.85 %) Medium (25.22 %) Hard (27.28 %) Medium (45.08 %) Medium (34.78 %) Medium (55.03 %) Medium (30.69 %) Medium (34.03 %) Medium (21.87 %) Medium (41.43 %) Medium (44.93 %) Easy (34.84 %) Hard (31.10 %) Medium (36.29 %) Hard (32.38 %) Hard (30.24 %) from Sorted List Easy (41.90 %) from Sorted List II Medium (32.18 %) Medium (32.50 %) from Sorted Array II Medium (39.50 %) Medium (30.38 %) Medium (50.96 %) Medium (45.99 %) Hard (29.84 %) Medium (41.31 %) Medium (34.67 %) Medium (38.95 %) Hard (36.41 %) Medium (28.12 %) Easy (43.42 %) Easy (30.66 %) Hard (22.45 %) Easy (37.93 %) Easy (40.67 %) Hard (13.78 %) Medium (45.52 %) Medium (33.22 %) Medium (46.35 %) Medium (26.49 %) Medium (32.27 %) Medium (45.32 %) Easy (32.15 %) Hard (30.73 %) Medium (34.81 %) Medium (31.30 %) Medium (29.61 %) Easy (42.78 %) Hard (50.65 %) Hard (37.68 %) Medium (27.53 %) Medium (44.74 %) Medium (46.79 %) Medium (39.14 %) Medium (53.37 %) Hard (27.46 %) Hard (22.36 %) Medium (29.94 %) Hard (41.88 %) Hard (28.21 %) Medium (40.14 %) Medium (46.67 %) Easy (39.51 %) Hard (35.57 %) Medium (41.84 %) Easy (40.45 %) Last Position of Element in Sorted Array Medium (32.97 %) Medium (32.64 %) Hard (24.91 %) Medium (30.03 %) Concatenation of All Words Hard (23.13 %) Medium (16.07 %) Easy (31.24 %) Easy (43.57 %) from Sorted Array Easy (39.64 %) Hard (35.32 %) Medium (43.15 %) Hard (32.95 %) Medium (53.14 %) Easy (45.83 %) Easy (35.88 %) Medium (33.99 %) Medium (29.70 %) of a Phone Number Medium (40.37 %) Medium (40.61 %) Medium (23.40 %) Easy (33.00 %) Easy (51.55 %) Medium (49.76 %) Medium (42.61 %) Hard (24.97 %) Easy (41.96 %) Medium (14.50 %) Easy (25.13 %) Medium (30.68 %) Medium (26.59 %) Hard (25.54 %) Without Repeating Characters Medium (27.94 %) Medium (30.58 %) Easy (41.94 %) sum-ii/description/ array backtracking java javascript kotlin php python python3 ruby rust scala swift 5]\n8' of candidate numbers (<code>candidates</code>) and a target number (<code>target</code>), find all unique combinations in <code>candidates</code> where the candidate numbers sums to <code>target</code>. candidates</code> may only be used once in the combination. ong> <code>target</code>) will be positive integers.</li> must not contain duplicate combinations.</li> 1: candidates = <code>[10,1,2,7,6,1,5]</code>, target = <code>8</code>, is: 2: candidates = [2,5,2,1,2], target = 5, is:

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