LeetCode 的 Go 解答

进度

统计规则：1.免费题，2.算法题，3.能提交 Go 解答

	Easy	Medium	Hard	Total
Accepted	265	456	187	908
Total	267	472	197	936

题解

题号	题目	通过率	难度	收藏
1250	* Check If It Is a Good Array	46%	Hard
1249	* Minimum Remove to Make Valid Parentheses	55%	Medium
1248	* Count Number of Nice Subarrays	50%	Medium
1247	* Minimum Swaps to Make Strings Equal	56%	Medium
1240	* Tiling a Rectangle with the Fewest Squares	48%	Hard
1239	* Maximum Length of a Concatenated String with Unique Characters	40%	Medium
1238	* Circular Permutation in Binary Representation	57%	Medium
1237	* Find Positive Integer Solution for a Given Equation	65%	Easy
1235	* Maximum Profit in Job Scheduling	44%	Hard
1234	* Replace the Substring for Balanced String	29%	Medium
1233	* Remove Sub-Folders from the Filesystem	53%	Medium
1232	* Check If It Is a Straight Line	47%	Easy
1227	* Airplane Seat Assignment Probability	61%	Medium
1224	* Maximum Equal Frequency	31%	Hard
1223	* Dice Roll Simulation	42%	Medium
1222	* Queens That Can Attack the King	68%	Medium
1221	Split a String in Balanced Strings	78%	Easy
1220	* Count Vowels Permutation	51%	Hard
1219	* Path with Maximum Gold	61%	Medium
1218	* Longest Arithmetic Subsequence of Given Difference	38%	Medium
1217	Play with Chips	63%	Easy
1210	* Minimum Moves to Reach Target with Rotations	43%	Hard
1209	* Remove All Adjacent Duplicates in String II	57%	Medium
1208	* Get Equal Substrings Within Budget	36%	Medium
1207	Unique Number of Occurrences	72%	Easy
1206	* Design Skiplist	60%	Hard
1203	* Sort Items by Groups Respecting Dependencies	45%	Hard
1202	Smallest String With Swaps	41%	Medium
1201	* Ugly Number III	24%	Medium
1200	Minimum Absolute Difference	66%	Easy
1192	* Critical Connections in a Network	47%	Hard
1191	* K-Concatenation Maximum Sum	24%	Medium
1190	Reverse Substrings Between Each Pair of Parentheses	57%	Medium	❤
1189	Maximum Number of Balloons	61%	Easy
1187	* Make Array Strictly Increasing	40%	Hard
1186	Maximum Subarray Sum with One Deletion	33%	Medium	❤
1185	Day of the Week	64%	Easy
1184	Distance Between Bus Stops	56%	Easy
1178	Number of Valid Words for Each Puzzle	35%	Hard	❤
1177	Can Make Palindrome from Substring	32%	Medium	❤
1175	Prime Arrangements	50%	Easy
1172	Dinner Plate Stacks	40%	Hard	❤
1171	Remove Zero Sum Consecutive Nodes from Linked List	41%	Medium
1170	Compare Strings by Frequency of the Smallest Character	58%	Easy
1169	Invalid Transactions	28%	Medium
1163	Last Substring in Lexicographical Order	30%	Hard	❤
1162	As Far from Land as Possible	40%	Medium
1161	Maximum Level Sum of a Binary Tree	70%	Medium
1160	Find Words That Can Be Formed by Characters	66%	Easy
1157	Online Majority Element In Subarray	33%	Hard	❤
1156	Swap For Longest Repeated Character Substring	46%	Medium
1155	Number of Dice Rolls With Target Sum	48%	Medium	❤
1154	Day of the Year	48%	Easy
1147	Longest Chunked Palindrome Decomposition	58%	Hard
1146	Snapshot Array	34%	Medium	❤
1145	Binary Tree Coloring Game	49%	Medium	❤
1144	Decrease Elements To Make Array Zigzag	43%	Medium
1143	Longest Common Subsequence	57%	Medium
1140	Stone Game II	60%	Medium	❤
1139	Largest 1-Bordered Square	44%	Medium	❤
1138	Alphabet Board Path	44%	Medium	❤
1137	N-th Tribonacci Number	57%	Easy	❤
1131	Maximum of Absolute Value Expression	52%	Medium	❤
1130	Minimum Cost Tree From Leaf Values	62%	Medium	❤
1129	Shortest Path with Alternating Colors	37%	Medium	❤
1128	Number of Equivalent Domino Pairs	46%	Easy
1125	Smallest Sufficient Team	44%	Hard	❤
1124	Longest Well-Performing Interval	31%	Medium
1123	Lowest Common Ancestor of Deepest Leaves	64%	Medium
1122	Relative Sort Array	66%	Easy
1111	Maximum Nesting Depth of Two Valid Parentheses Strings	67%	Medium
1110	Delete Nodes And Return Forest	64%	Medium
1109	Corporate Flight Bookings	49%	Medium
1108	Defanging an IP Address	84%	Easy
1106	Parsing A Boolean Expression	57%	Hard
1105	Filling Bookcase Shelves	56%	Medium	❤
1104	Path In Zigzag Labelled Binary Tree	70%	Medium
1103	Distribute Candies to People	59%	Easy
1096	Brace Expansion II	59%	Hard
1095	Find in Mountain Array	34%	Hard
1094	Car Pooling	57%	Medium
1093	Statistics from a Large Sample	44%	Medium
1092	Shortest Common Supersequence	49%	Hard	❤
1091	Shortest Path in Binary Matrix	36%	Medium
1090	Largest Values From Labels	57%	Medium
1089	Duplicate Zeros	58%	Easy	❤
1081	Smallest Subsequence of Distinct Characters	44%	Medium
1080	Insufficient Nodes in Root to Leaf Paths	45%	Medium	❤
1079	Letter Tile Possibilities	74%	Medium	❤
1078	Occurrences After Bigram	64%	Easy
1074	Number of Submatrices That Sum to Target	58%	Hard	❤
1073	Adding Two Negabinary Numbers	32%	Medium	❤
1072	Flip Columns For Maximum Number of Equal Rows	59%	Medium	❤
1071	Greatest Common Divisor of Strings	53%	Easy	❤
1054	Distant Barcodes	40%	Medium	❤
1053	Previous Permutation With One Swap	46%	Medium
1052	Grumpy Bookstore Owner	53%	Medium
1051	Height Checker	68%	Easy
1049	Last Stone Weight II	41%	Medium	❤
1048	Longest String Chain	51%	Medium	❤
1047	Remove All Adjacent Duplicates In String	65%	Easy
1046	Last Stone Weight	62%	Easy
1044	Longest Duplicate Substring	23%	Hard	❤
1043	Partition Array for Maximum Sum	62%	Medium	❤
1042	Flower Planting With No Adjacent	47%	Easy	❤
1041	Robot Bounded In Circle	46%	Medium
1040	Moving Stones Until Consecutive II	49%	Medium	❤
1039	Minimum Score Triangulation of Polygon	44%	Medium	❤
1038	Binary Search Tree to Greater Sum Tree	77%	Medium
1037	Valid Boomerang	37%	Easy
1036	Escape a Large Maze	34%	Hard
1035	Uncrossed Lines	52%	Medium	❤
1034	Coloring A Border	43%	Medium
1033	Moving Stones Until Consecutive	38%	Easy
1032	Stream of Characters	45%	Hard	❤
1031	Maximum Sum of Two Non-Overlapping Subarrays	55%	Medium	❤
1030	Matrix Cells in Distance Order	64%	Easy	❤
1029	Two City Scheduling	55%	Easy
1028	Recover a Tree From Preorder Traversal	69%	Hard	❤
1027	Longest Arithmetic Sequence	51%	Medium	❤
1026	Maximum Difference Between Node and Ancestor	61%	Medium	❤
1025	Divisor Game	65%	Easy	❤
1024	Video Stitching	47%	Medium	❤
1023	Camelcase Matching	54%	Medium
1022	Sum of Root To Leaf Binary Numbers	61%	Easy	❤
1021	Remove Outermost Parentheses	75%	Easy
1020	Number of Enclaves	54%	Medium
1019	Next Greater Node In Linked List	56%	Medium	❤
1018	Binary Prefix Divisible By 5	46%	Easy
1017	Convert to Base -2	57%	Medium
1016	Binary String With Substrings Representing 1 To N	58%	Medium
1015	Smallest Integer Divisible by K	30%	Medium	❤
1014	Best Sightseeing Pair	51%	Medium
1013	Partition Array Into Three Parts With Equal Sum	56%	Easy
1012	Numbers With Repeated Digits	35%	Hard	❤
1011	Capacity To Ship Packages Within D Days	55%	Medium	❤
1010	Pairs of Songs With Total Durations Divisible by 60	46%	Easy
1009	Complement of Base 10 Integer	59%	Easy	❤
1008	Construct Binary Search Tree from Preorder Traversal	73%	Medium
1007	Minimum Domino Rotations For Equal Row	51%	Medium
1006	Clumsy Factorial	53%	Medium
1005	Maximize Sum Of Array After K Negations	50%	Easy
1004	Max Consecutive Ones III	55%	Medium	❤
1003	Check If Word Is Valid After Substitutions	53%	Medium
1002	Find Common Characters	65%	Easy
1001	Grid Illumination	34%	Hard	❤
1000	Minimum Cost to Merge Stones	36%	Hard	❤
0999	Available Captures for Rook	65%	Easy
0998	Maximum Binary Tree II	61%	Medium
0997	Find the Town Judge	49%	Easy
0996	Number of Squareful Arrays	47%	Hard	❤
0995	Minimum Number of K Consecutive Bit Flips	46%	Hard
0994	Rotting Oranges	46%	Easy
0993	Cousins in Binary Tree	51%	Easy
0992	Subarrays with K Different Integers	45%	Hard	❤
0991	Broken Calculator	42%	Medium	❤
0990	Satisfiability of Equality Equations	41%	Medium
0989	Add to Array-Form of Integer	43%	Easy
0988	Smallest String Starting From Leaf	44%	Medium
0987	Vertical Order Traversal of a Binary Tree	33%	Medium
0986	Interval List Intersections	64%	Medium	❤
0985	Sum of Even Numbers After Queries	62%	Easy
0984	String Without AAA or BBB	34%	Medium
0983	Minimum Cost For Tickets	57%	Medium	❤
0982	Triples with Bitwise AND Equal To Zero	54%	Hard	❤
0981	Time Based Key-Value Store	51%	Medium
0980	Unique Paths III	71%	Hard	❤
0979	Distribute Coins in Binary Tree	67%	Medium	❤
0978	Longest Turbulent Subarray	45%	Medium	❤
0977	Squares of a Sorted Array	71%	Easy
0976	Largest Perimeter Triangle	57%	Easy	❤
0975	Odd Even Jump	45%	Hard	❤
0974	Subarray Sums Divisible by K	47%	Medium	❤
0973	K Closest Points to Origin	61%	Medium
0972	Equal Rational Numbers	40%	Hard	❤
0971	Flip Binary Tree To Match Preorder Traversal	43%	Medium	❤
0970	Powerful Integers	39%	Easy
0969	Pancake Sorting	62%	Medium
0968	Binary Tree Cameras	36%	Hard
0967	Numbers With Same Consecutive Differences	38%	Medium
0966	Vowel Spellchecker	44%	Medium
0965	Univalued Binary Tree	66%	Easy
0964	Least Operators to Express Number	41%	Hard	❤
0963	Minimum Area Rectangle II	47%	Medium
0962	Maximum Width Ramp	43%	Medium	❤
0961	N-Repeated Element in Size 2N Array	72%	Easy
0960	Delete Columns to Make Sorted III	52%	Hard	❤
0959	Regions Cut By Slashes	63%	Medium
0958	Check Completeness of a Binary Tree	50%	Medium
0957	Prison Cells After N Days	38%	Medium
0956	Tallest Billboard	38%	Hard	❤
0955	Delete Columns to Make Sorted II	32%	Medium	❤
0954	Array of Doubled Pairs	35%	Medium
0953	Verifying an Alien Dictionary	55%	Easy
0952	Largest Component Size by Common Factor	27%	Hard	❤
0951	Flip Equivalent Binary Trees	65%	Medium
0950	Reveal Cards In Increasing Order	72%	Medium
0949	Largest Time for Given Digits	34%	Easy	❤
0948	Bag of Tokens	39%	Medium	❤
0947	Most Stones Removed with Same Row or Column	54%	Medium	❤
0946	Validate Stack Sequences	58%	Medium
0945	Minimum Increment to Make Array Unique	44%	Medium	❤
0944	Delete Columns to Make Sorted	69%	Easy
0943	Find the Shortest Superstring	40%	Hard	❤
0942	DI String Match	70%	Easy
0941	Valid Mountain Array	35%	Easy
0940	Distinct Subsequences II	40%	Hard	❤
0939	Minimum Area Rectangle	51%	Medium	❤
0938	Range Sum of BST	78%	Easy
0937	Reorder Data in Log Files	54%	Easy
0936	Stamping The Sequence	35%	Hard	❤
0935	Knight Dialer	42%	Medium
0934	Shortest Bridge	45%	Medium
0933	Number of Recent Calls	69%	Easy
0932	Beautiful Array	54%	Medium	❤
0931	Minimum Falling Path Sum	59%	Medium
0930	Binary Subarrays With Sum	39%	Medium
0929	Unique Email Addresses	68%	Easy
0928	Minimize Malware Spread II	39%	Hard
0927	Three Equal Parts	31%	Hard
0926	Flip String to Monotone Increasing	51%	Medium
0925	Long Pressed Name	44%	Easy
0924	Minimize Malware Spread	40%	Hard
0923	3Sum With Multiplicity	34%	Medium	❤
0922	Sort Array By Parity II	67%	Easy
0921	Minimum Add to Make Parentheses Valid	70%	Medium	❤
0920	Number of Music Playlists	44%	Hard	❤
0919	Complete Binary Tree Inserter	55%	Medium	❤
0918	Maximum Sum Circular Subarray	33%	Medium	❤
0917	Reverse Only Letters	56%	Easy
0916	Word Subsets	45%	Medium
0915	Partition Array into Disjoint Intervals	43%	Medium	❤
0914	X of a Kind in a Deck of Cards	34%	Easy
0913	Cat and Mouse	29%	Hard	❤
0912	Sort an Array	62%	Medium
0911	Online Election	48%	Medium	❤
0910	Smallest Range II	24%	Medium	❤
0909	Snakes and Ladders	36%	Medium	❤
0908	Smallest Range I	64%	Easy
0907	Sum of Subarray Minimums	29%	Medium	❤
0906	Super Palindromes	30%	Hard
0905	Sort Array By Parity	72%	Easy
0904	Fruit Into Baskets	41%	Medium	❤
0903	Valid Permutations for DI Sequence	46%	Hard	❤
0902	Numbers At Most N Given Digit Set	29%	Hard
0901	Online Stock Span	51%	Medium	❤
0900	RLE Iterator	51%	Medium
0899	Orderly Queue	49%	Hard
0898	Bitwise ORs of Subarrays	35%	Medium	❤
0897	Increasing Order Search Tree	66%	Easy	❤
0896	Monotonic Array	56%	Easy	❤
0895	Maximum Frequency Stack	58%	Hard	❤
0894	All Possible Full Binary Trees	72%	Medium
0893	Groups of Special-Equivalent Strings	63%	Easy
0892	Surface Area of 3D Shapes	57%	Easy
0891	Sum of Subsequence Widths	30%	Hard
0890	Find and Replace Pattern	72%	Medium
0889	Construct Binary Tree from Preorder and Postorder Traversal	62%	Medium
0888	Fair Candy Swap	56%	Easy
0887	Super Egg Drop	25%	Hard
0886	Possible Bipartition	41%	Medium
0885	Spiral Matrix III	66%	Medium
0884	Uncommon Words from Two Sentences	61%	Easy
0883	Projection Area of 3D Shapes	66%	Easy
0882	Reachable Nodes In Subdivided Graph	39%	Hard
0881	Boats to Save People	44%	Medium
0880	Decoded String at Index	23%	Medium
0879	Profitable Schemes	37%	Hard	❤
0878	Nth Magical Number	26%	Hard
0877	Stone Game	62%	Medium
0876	Middle of the Linked List	65%	Easy
0875	Koko Eating Bananas	48%	Medium
0874	Walking Robot Simulation	33%	Easy
0873	Length of Longest Fibonacci Subsequence	47%	Medium
0872	Leaf-Similar Trees	64%	Easy
0871	Minimum Number of Refueling Stops	30%	Hard
0870	Advantage Shuffle	43%	Medium
0869	Reordered Power of 2	51%	Medium
0868	Binary Gap	59%	Easy
0867	Transpose Matrix	63%	Easy
0866	Prime Palindrome	21%	Medium	❤
0865	Smallest Subtree with all the Deepest Nodes	58%	Medium
0864	Shortest Path to Get All Keys	38%	Hard	❤
0863	All Nodes Distance K in Binary Tree	50%	Medium	❤
0862	Shortest Subarray with Sum at Least K	22%	Hard	❤
0861	Score After Flipping Matrix	70%	Medium
0860	Lemonade Change	50%	Easy
0859	Buddy Strings	27%	Easy
0858	Mirror Reflection	52%	Medium
0857	Minimum Cost to Hire K Workers	48%	Hard	❤
0856	Score of Parentheses	57%	Medium
0855	Exam Room	40%	Medium
0854	K-Similar Strings	35%	Hard	❤
0853	Car Fleet	41%	Medium
0852	Peak Index in a Mountain Array	70%	Easy	❤
0851	Loud and Rich	49%	Medium	❤
0850	Rectangle Area II	46%	Hard	❤
0849	Maximize Distance to Closest Person	41%	Easy	❤
0848	Shifting Letters	42%	Medium
0847	Shortest Path Visiting All Nodes	48%	Hard	❤
0846	Hand of Straights	50%	Medium	❤
0845	Longest Mountain in Array	35%	Medium
0844	Backspace String Compare	46%	Easy
0843	Guess the Word	45%	Hard	❤
0842	Split Array into Fibonacci Sequence	35%	Medium
0841	Keys and Rooms	61%	Medium
0840	Magic Squares In Grid	36%	Easy
0839	Similar String Groups	36%	Hard	❤
0838	Push Dominoes	45%	Medium	❤
0837	New 21 Game	32%	Medium	❤
0836	Rectangle Overlap	47%	Easy
0835	Image Overlap	54%	Medium
0834	Sum of Distances in Tree	41%	Hard	❤
0833	Find And Replace in String	48%	Medium
0832	Flipping an Image	73%	Easy
0831	Masking Personal Information	42%	Medium
0830	Positions of Large Groups	48%	Easy
0829	Consecutive Numbers Sum	35%	Hard	❤
0828	Unique Letter String	41%	Hard	❤
0827	Making A Large Island	44%	Hard	❤
0826	Most Profit Assigning Work	37%	Medium	❤
0825	Friends Of Appropriate Ages	39%	Medium
0824	Goat Latin	59%	Easy
0823	Binary Trees With Factors	33%	Medium
0822	Card Flipping Game	41%	Medium
0821	Shortest Distance to a Character	64%	Easy
0820	Short Encoding of Words	48%	Medium	❤
0819	Most Common Word	43%	Easy
0818	Race Car	37%	Hard	❤
0817	Linked List Components	55%	Medium
0816	Ambiguous Coordinates	45%	Medium
0815	Bus Routes	41%	Hard	❤
0814	Binary Tree Pruning	72%	Medium
0813	Largest Sum of Averages	47%	Medium	❤
0812	Largest Triangle Area	56%	Easy
0811	Subdomain Visit Count	66%	Easy
0810	Chalkboard XOR Game	45%	Hard	❤
0809	Expressive Words	45%	Medium
0808	Soup Servings	38%	Medium
0807	Max Increase to Keep City Skyline	82%	Medium
0806	Number of Lines To Write String	63%	Easy
0805	Split Array With Same Average	25%	Hard	❤
0804	Unique Morse Code Words	75%	Easy
0803	Bricks Falling When Hit	29%	Hard	❤
0802	Find Eventual Safe States	45%	Medium	❤
0801	Minimum Swaps To Make Sequences Increasing	36%	Medium	❤
0799	Champagne Tower	34%	Medium	❤
0798	Smallest Rotation with Highest Score	41%	Hard	❤
0797	All Paths From Source to Target	72%	Medium
0796	Rotate String	49%	Easy
0795	Number of Subarrays with Bounded Maximum	44%	Medium	❤
0794	Valid Tic-Tac-Toe State	31%	Medium
0793	Preimage Size of Factorial Zeroes Function	39%	Hard	❤
0792	Number of Matching Subsequences	45%	Medium	❤
0791	Custom Sort String	63%	Medium
0790	Domino and Tromino Tiling	37%	Medium	❤
0789	Escape The Ghosts	56%	Medium
0788	Rotated Digits	55%	Easy
0787	Cheapest Flights Within K Stops	36%	Medium	❤
0786	K-th Smallest Prime Fraction	41%	Hard	❤
0785	Is Graph Bipartite?	45%	Medium	❤
0784	Letter Case Permutation	59%	Easy	❤
0783	Minimum Distance Between BST Nodes	51%	Easy
0782	Transform to Chessboard	39%	Hard
0781	Rabbits in Forest	52%	Medium
0780	Reaching Points	28%	Hard
0779	K-th Symbol in Grammar	37%	Medium
0778	Swim in Rising Water	49%	Hard
0777	Swap Adjacent in LR String	34%	Medium
0775	Global and Local Inversions	40%	Medium
0773	Sliding Puzzle	55%	Hard
0771	Jewels and Stones	83%	Easy
0770	Basic Calculator IV	46%	Hard	❤
0769	Max Chunks To Make Sorted	52%	Medium
0768	Max Chunks To Make Sorted II	46%	Hard
0767	Reorganize String	44%	Medium
0766	Toeplitz Matrix	62%	Easy
0765	Couples Holding Hands	52%	Hard
0764	Largest Plus Sign	44%	Medium
0763	Partition Labels	72%	Medium
0762	Prime Number of Set Bits in Binary Representation	60%	Easy
0761	Special Binary String	53%	Hard
0757	Set Intersection Size At Least Two	37%	Hard
0756	Pyramid Transition Matrix	52%	Medium	❤
0754	Reach a Number	33%	Easy	❤
0753	Cracking the Safe	48%	Hard	❤
0752	Open the Lock	47%	Medium	❤
0749	Contain Virus	42%	Hard
0748	Shortest Completing Word	55%	Easy
0747	Largest Number At Least Twice of Others	40%	Easy
0746	Min Cost Climbing Stairs	48%	Easy
0745	Prefix and Suffix Search	32%	Hard
0744	Find Smallest Letter Greater Than Target	44%	Easy
0743	Network Delay Time	44%	Medium
0741	Cherry Pickup	31%	Hard
0740	Delete and Earn	47%	Medium	❤
0739	Daily Temperatures	61%	Medium	❤
0738	Monotone Increasing Digits	42%	Medium
0736	Parse Lisp Expression	45%	Hard	❤
0735	Asteroid Collision	39%	Medium
0733	Flood Fill	52%	Easy
0732	My Calendar III	57%	Hard
0731	My Calendar II	46%	Medium	❤
0730	Count Different Palindromic Subsequences	40%	Hard	❤
0729	My Calendar I	49%	Medium
0728	Self Dividing Numbers	71%	Easy
0726	Number of Atoms	46%	Hard	❤
0725	Split Linked List in Parts	50%	Medium
0724	Find Pivot Index	42%	Easy
0722	Remove Comments	32%	Medium	❤
0721	Accounts Merge	43%	Medium	❤
0720	Longest Word in Dictionary	46%	Easy
0719	Find K-th Smallest Pair Distance	30%	Hard	❤
0718	Maximum Length of Repeated Subarray	47%	Medium	❤
0717	1-bit and 2-bit Characters	49%	Easy
0715	Range Module	36%	Hard
0714	Best Time to Buy and Sell Stock with Transaction Fee	52%	Medium	❤
0713	Subarray Product Less Than K	37%	Medium	❤
0712	Minimum ASCII Delete Sum for Two Strings	55%	Medium	❤
0710	Random Pick with Blacklist	32%	Hard	❤
0709	To Lower Case	77%	Easy
0707	Design Linked List	20%	Medium	❤
0706	Design HashMap	57%	Easy
0705	Design HashSet	56%	Easy
0704	Binary Search	49%	Easy
0703	Kth Largest Element in a Stream	47%	Easy
0701	Insert into a Binary Search Tree	77%	Medium
0700	Search in a Binary Search Tree	69%	Easy
0699	Falling Squares	40%	Hard
0698	Partition to K Equal Sum Subsets	43%	Medium	❤
0697	Degree of an Array	51%	Easy
0696	Count Binary Substrings	54%	Easy
0695	Max Area of Island	59%	Medium	❤
0693	Binary Number with Alternating Bits	58%	Easy
0692	Top K Frequent Words	47%	Medium
0691	Stickers to Spell Word	40%	Hard	❤
0689	Maximum Sum of 3 Non-Overlapping Subarrays	44%	Hard
0688	Knight Probability in Chessboard	46%	Medium
0687	Longest Univalue Path	34%	Easy
0686	Repeated String Match	31%	Easy	❤
0685	Redundant Connection II	31%	Hard	❤
0684	Redundant Connection	54%	Medium
0682	Baseball Game	61%	Easy
0680	Valid Palindrome II	35%	Easy
0679	24 Game	44%	Hard	❤
0678	Valid Parenthesis String	33%	Medium	❤
0677	Map Sum Pairs	52%	Medium	❤
0676	Implement Magic Dictionary	52%	Medium
0675	Cut Off Trees for Golf Event	32%	Hard	❤
0674	Longest Continuous Increasing Subsequence	44%	Easy
0673	Number of Longest Increasing Subsequence	34%	Medium	❤
0672	Bulb Switcher II	50%	Medium
0671	Second Minimum Node In a Binary Tree	43%	Easy
0670	Maximum Swap	41%	Medium	❤
0669	Trim a Binary Search Tree	61%	Easy
0668	Kth Smallest Number in Multiplication Table	43%	Hard
0667	Beautiful Arrangement II	52%	Medium
0665	Non-decreasing Array	19%	Easy
0664	Strange Printer	38%	Hard	❤
0662	Maximum Width of Binary Tree	39%	Medium
0661	Image Smoother	49%	Easy
0659	Split Array into Consecutive Subsequences	42%	Medium	❤
0658	Find K Closest Elements	39%	Medium	❤
0657	Robot Return to Origin	72%	Easy
0655	Print Binary Tree	52%	Medium
0654	Maximum Binary Tree	77%	Medium	❤
0653	Two Sum IV - Input is a BST	53%	Easy
0652	Find Duplicate Subtrees	47%	Medium
0650	2 Keys Keyboard	47%	Medium
0649	Dota2 Senate	38%	Medium	❤
0648	Replace Words	53%	Medium
0647	Palindromic Substrings	58%	Medium	❤
0646	Maximum Length of Pair Chain	49%	Medium
0645	Set Mismatch	41%	Easy	❤
0643	Maximum Average Subarray I	40%	Easy
0641	Design Circular Deque	50%	Medium	❤
0640	Solve the Equation	40%	Medium
0639	Decode Ways II	25%	Hard
0638	Shopping Offers	50%	Medium	❤
0637	Average of Levels in Binary Tree	60%	Easy
0636	Exclusive Time of Functions	49%	Medium	❤
0633	Sum of Square Numbers	32%	Easy
0632	Smallest Range Covering Elements from K Lists	49%	Hard
0630	Course Schedule III	32%	Hard	❤
0629	K Inverse Pairs Array	29%	Hard
0628	Maximum Product of Three Numbers	46%	Easy	❤
0623	Add One Row to Tree	47%	Medium
0622	Design Circular Queue	41%	Medium
0621	Task Scheduler	46%	Medium	❤
0617	Merge Two Binary Trees	71%	Easy
0611	Valid Triangle Number	46%	Medium	❤
0609	Find Duplicate File in System	56%	Medium
0606	Construct String from Binary Tree	52%	Easy
0605	Can Place Flowers	31%	Easy	❤
0600	Non-negative Integers without Consecutive Ones	33%	Hard	❤
0599	Minimum Index Sum of Two Lists	48%	Easy
0598	Range Addition II	49%	Easy
0594	Longest Harmonious Subsequence	44%	Easy
0593	Valid Square	41%	Medium
0592	Fraction Addition and Subtraction	47%	Medium
0591	Tag Validator	33%	Hard	❤
0587	Erect the Fence	34%	Hard	❤
0583	Delete Operation for Two Strings	46%	Medium	❤
0581	Shortest Unsorted Continuous Subarray	30%	Easy	❤
0576	Out of Boundary Paths	33%	Medium	❤
0575	Distribute Candies	60%	Easy
0572	Subtree of Another Tree	42%	Easy	❤
0567	Permutation in String	39%	Medium
0566	Reshape the Matrix	59%	Easy
0565	Array Nesting	53%	Medium
0564	Find the Closest Palindrome	19%	Hard
0563	Binary Tree Tilt	47%	Easy
0561	Array Partition I	70%	Easy
0560	Subarray Sum Equals K	43%	Medium	❤
0557	Reverse Words in a String III	66%	Easy
0556	Next Greater Element III	30%	Medium
0554	Brick Wall	48%	Medium
0553	Optimal Division	55%	Medium
0552	Student Attendance Record II	34%	Hard	❤
0551	Student Attendance Record I	46%	Easy
0547	Friend Circles	55%	Medium	❤
0546	Remove Boxes	39%	Hard	❤
0543	Diameter of Binary Tree	47%	Easy
0542	01 Matrix	37%	Medium	❤
0541	Reverse String II	46%	Easy
0540	Single Element in a Sorted Array	57%	Medium
0539	Minimum Time Difference	49%	Medium
0538	Convert BST to Greater Tree	52%	Easy
0537	Complex Number Multiplication	66%	Medium
0532	K-diff Pairs in an Array	30%	Easy
0530	Minimum Absolute Difference in BST	51%	Easy	❤
0529	Minesweeper	55%	Medium
0528	Random Pick with Weight	43%	Medium
0526	Beautiful Arrangement	55%	Medium	❤
0525	Contiguous Array	43%	Medium	❤
0524	Longest Word in Dictionary through Deleting	46%	Medium
0523	Continuous Subarray Sum	24%	Medium	❤
0522	Longest Uncommon Subsequence II	33%	Medium
0521	Longest Uncommon Subsequence I	56%	Easy
0520	Detect Capital	52%	Easy
0519	Random Flip Matrix	34%	Medium
0518	Coin Change 2	44%	Medium	❤
0517	Super Washing Machines	37%	Hard	❤
0516	Longest Palindromic Subsequence	49%	Medium	❤
0515	Find Largest Value in Each Tree Row	58%	Medium
0514	Freedom Trail	41%	Hard
0513	Find Bottom Left Tree Value	59%	Medium
0509	Fibonacci Number	66%	Easy
0508	Most Frequent Subtree Sum	55%	Medium
0507	Perfect Number	35%	Easy
0506	Relative Ranks	49%	Easy
0504	Base 7	45%	Easy
0503	Next Greater Element II	52%	Medium	❤
0502	IPO	38%	Hard
0501	Find Mode in Binary Search Tree	40%	Easy	❤
0500	Keyboard Row	63%	Easy
0498	Diagonal Traverse	46%	Medium
0497	Random Point in Non-overlapping Rectangles	36%	Medium
0496	Next Greater Element I	61%	Easy
0495	Teemo Attacking	52%	Medium
0494	Target Sum	45%	Medium	❤
0493	Reverse Pairs	23%	Hard
0492	Construct the Rectangle	48%	Easy	❤
0491	Increasing Subsequences	43%	Medium	❤
0488	Zuma Game	40%	Hard	❤
0486	Predict the Winner	47%	Medium
0485	Max Consecutive Ones	55%	Easy
0483	Smallest Good Base	34%	Hard	❤
0482	License Key Formatting	41%	Easy
0481	Magical String	46%	Medium
0480	Sliding Window Median	34%	Hard	❤
0479	Largest Palindrome Product	27%	Hard
0478	Generate Random Point in a Circle	37%	Medium
0477	Total Hamming Distance	49%	Medium	❤
0476	Number Complement	62%	Easy
0475	Heaters	32%	Easy
0474	Ones and Zeroes	40%	Medium
0473	Matchsticks to Square	36%	Medium	❤
0472	Concatenated Words	37%	Hard
0470	Implement Rand10() Using Rand7()	45%	Medium	❤
0468	Validate IP Address	21%	Medium
0467	Unique Substrings in Wraparound String	34%	Medium	❤
0466	Count The Repetitions	27%	Hard	❤
0464	Can I Win	28%	Medium	❤
0463	Island Perimeter	62%	Easy
0462	Minimum Moves to Equal Array Elements II	52%	Medium
0461	Hamming Distance	70%	Easy
0460	LFU Cache	30%	Hard
0459	Repeated Substring Pattern	40%	Easy	❤
0458	Poor Pigs	46%	Hard
0457	Circular Array Loop	28%	Medium
0456	132 Pattern	27%	Medium	❤
0455	Assign Cookies	48%	Easy
0454	4Sum II	51%	Medium
0453	Minimum Moves to Equal Array Elements	49%	Easy
0452	Minimum Number of Arrows to Burst Balloons	47%	Medium
0451	Sort Characters By Frequency	57%	Medium
0450	Delete Node in a BST	40%	Medium	❤
0448	Find All Numbers Disappeared in an Array	54%	Easy
0447	Number of Boomerangs	50%	Easy
0446	Arithmetic Slices II - Subsequence	31%	Hard	❤
0445	Add Two Numbers II	51%	Medium	❤
0443	String Compression	38%	Easy	❤
0442	Find All Duplicates in an Array	62%	Medium
0441	Arranging Coins	38%	Easy
0440	K-th Smallest in Lexicographical Order	27%	Hard	❤
0438	Find All Anagrams in a String	39%	Medium
0437	Path Sum III	44%	Easy	❤
0436	Find Right Interval	43%	Medium
0435	Non-overlapping Intervals	41%	Medium	❤
0434	Number of Segments in a String	37%	Easy
0433	Minimum Genetic Mutation	39%	Medium
0432	All O`one Data Structure	30%	Hard	❤
0424	Longest Repeating Character Replacement	44%	Medium	❤
0423	Reconstruct Original Digits from English	46%	Medium
0421	Maximum XOR of Two Numbers in an Array	52%	Medium	❤
0420	Strong Password Checker	16%	Hard	❤
0419	Battleships in a Board	66%	Medium
0417	Pacific Atlantic Water Flow	38%	Medium
0416	Partition Equal Subset Sum	41%	Medium	❤
0415	Add Strings	45%	Easy
0414	Third Maximum Number	29%	Easy
0413	Arithmetic Slices	56%	Medium
0412	Fizz Buzz	60%	Easy
0410	Split Array Largest Sum	43%	Hard
0409	Longest Palindrome	48%	Easy
0407	Trapping Rain Water II	40%	Hard
0406	Queue Reconstruction by Height	61%	Medium	❤
0405	Convert a Number to Hexadecimal	42%	Easy
0404	Sum of Left Leaves	49%	Easy
0403	Frog Jump	37%	Hard	❤
0402	Remove K Digits	27%	Medium	❤
0401	Binary Watch	45%	Easy
0400	Nth Digit	30%	Medium	❤
0399	Evaluate Division	49%	Medium	❤
0398	Random Pick Index	51%	Medium
0397	Integer Replacement	32%	Medium	❤
0396	Rotate Function	35%	Medium	❤
0395	Longest Substring with At Least K Repeating Characters	39%	Medium
0394	Decode String	47%	Medium
0393	UTF-8 Validation	36%	Medium	❤
0392	Is Subsequence	47%	Easy	❤
0391	Perfect Rectangle	28%	Hard
0390	Elimination Game	43%	Medium	❤
0389	Find the Difference	53%	Easy
0388	Longest Absolute File Path	40%	Medium
0387	First Unique Character in a String	50%	Easy
0386	Lexicographical Numbers	48%	Medium
0385	Mini Parser	32%	Medium	❤
0384	Shuffle an Array	51%	Medium	❤
0383	Ransom Note	50%	Easy
0382	Linked List Random Node	50%	Medium
0381	Insert Delete GetRandom O(1) - Duplicates allowed	32%	Hard	❤
0380	Insert Delete GetRandom O(1)	44%	Medium	❤
0378	Kth Smallest Element in a Sorted Matrix	51%	Medium	❤
0377	Combination Sum IV	44%	Medium
0376	Wiggle Subsequence	38%	Medium	❤
0375	Guess Number Higher or Lower II	38%	Medium
0373	Find K Pairs with Smallest Sums	34%	Medium	❤
0372	Super Pow	36%	Medium
0371	Sum of Two Integers	50%	Easy	❤
0368	Largest Divisible Subset	35%	Medium	❤
0367	Valid Perfect Square	40%	Easy
0365	Water and Jug Problem	29%	Medium	❤
0363	Max Sum of Rectangle No Larger Than K	35%	Hard	❤
0357	Count Numbers with Unique Digits	47%	Medium	❤
0355	Design Twitter	28%	Medium	❤
0354	Russian Doll Envelopes	34%	Hard	❤
0352	Data Stream as Disjoint Intervals	44%	Hard
0350	Intersection of Two Arrays II	49%	Easy	❤
0349	Intersection of Two Arrays	57%	Easy
0347	Top K Frequent Elements	57%	Medium
0345	Reverse Vowels of a String	42%	Easy
0344	Reverse String	64%	Easy
0343	Integer Break	48%	Medium
0342	Power of Four	40%	Easy
0338	Counting Bits	65%	Medium
0337	House Robber III	49%	Medium	❤
0336	Palindrome Pairs	32%	Hard	❤
0335	Self Crossing	27%	Hard
0334	Increasing Triplet Subsequence	39%	Medium	❤
0332	Reconstruct Itinerary	33%	Medium	❤
0331	Verify Preorder Serialization of a Binary Tree	39%	Medium	❤
0330	Patching Array	33%	Hard
0329	Longest Increasing Path in a Matrix	41%	Hard	❤
0328	Odd Even Linked List	50%	Medium	❤
0327	Count of Range Sum	33%	Hard	❤
0326	Power of Three	41%	Easy	❤
0324	Wiggle Sort II	28%	Medium
0322	Coin Change	32%	Medium	❤
0321	Create Maximum Number	25%	Hard	❤
0319	Bulb Switcher	44%	Medium	❤
0318	Maximum Product of Word Lengths	49%	Medium	❤
0316	Remove Duplicate Letters	33%	Hard	❤
0315	Count of Smaller Numbers After Self	39%	Hard
0313	Super Ugly Number	42%	Medium	❤
0312	Burst Balloons	48%	Hard	❤
0310	Minimum Height Trees	31%	Medium
0309	Best Time to Buy and Sell Stock with Cooldown	45%	Medium	❤
0307	Range Sum Query - Mutable	30%	Medium
0306	Additive Number	28%	Medium
0304	Range Sum Query 2D - Immutable	34%	Medium
0303	Range Sum Query - Immutable	40%	Easy
0301	Remove Invalid Parentheses	40%	Hard	❤
0300	Longest Increasing Subsequence	41%	Medium	❤
0299	Bulls and Cows	40%	Easy
0295	Find Median from Data Stream	39%	Hard	❤
0292	Nim Game	55%	Easy	❤
0290	Word Pattern	35%	Easy
0289	Game of Life	49%	Medium	❤
0287	Find the Duplicate Number	51%	Medium	❤
0283	Move Zeroes	55%	Easy
0282	Expression Add Operators	34%	Hard	❤
0279	Perfect Squares	43%	Medium	❤
0275	H-Index II	35%	Medium	❤
0274	H-Index	34%	Medium
0273	Integer to English Words	25%	Hard	❤
0268	Missing Number	49%	Easy
0264	Ugly Number II	37%	Medium	❤
0263	Ugly Number	41%	Easy
0260	Single Number III	58%	Medium	❤
0258	Add Digits	55%	Easy
0257	Binary Tree Paths	47%	Easy
0242	Valid Anagram	54%	Easy
0241	Different Ways to Add Parentheses	52%	Medium
0240	Search a 2D Matrix II	41%	Medium	❤
0239	Sliding Window Maximum	39%	Hard	❤
0238	Product of Array Except Self	57%	Medium
0237	Delete Node in a Linked List	56%	Easy	❤
0236	Lowest Common Ancestor of a Binary Tree	40%	Medium	❤
0235	Lowest Common Ancestor of a Binary Search Tree	46%	Easy	❤
0234	Palindrome Linked List	37%	Easy
0233	Number of Digit One	30%	Hard	❤
0232	Implement Queue using Stacks	45%	Easy
0231	Power of Two	42%	Easy
0230	Kth Smallest Element in a BST	54%	Medium
0229	Majority Element II	33%	Medium	❤
0228	Summary Ranges	37%	Medium
0227	Basic Calculator II	34%	Medium
0226	Invert Binary Tree	60%	Easy
0225	Implement Stack using Queues	41%	Easy
0224	Basic Calculator	34%	Hard
0223	Rectangle Area	36%	Medium
0222	Count Complete Tree Nodes	38%	Medium
0221	Maximal Square	34%	Medium	❤
0220	Contains Duplicate III	20%	Medium	❤
0219	Contains Duplicate II	36%	Easy
0218	The Skyline Problem	32%	Hard	❤
0217	Contains Duplicate	53%	Easy
0216	Combination Sum III	53%	Medium
0215	Kth Largest Element in an Array	50%	Medium	❤
0214	Shortest Palindrome	28%	Hard	❤
0213	House Robber II	35%	Medium
0212	Word Search II	30%	Hard	❤
0211	Add and Search Word - Data structure design	32%	Medium	❤
0210	Course Schedule II	36%	Medium
0209	Minimum Size Subarray Sum	35%	Medium
0208	Implement Trie (Prefix Tree)	41%	Medium	❤
0207	Course Schedule	39%	Medium	❤
0206	Reverse Linked List	57%	Easy
0205	Isomorphic Strings	38%	Easy	❤
0204	Count Primes	30%	Easy	❤
0203	Remove Linked List Elements	36%	Easy
0202	Happy Number	47%	Easy
0201	Bitwise AND of Numbers Range	36%	Medium	❤
0200	Number of Islands	43%	Medium
0199	Binary Tree Right Side View	50%	Medium
0198	House Robber	41%	Easy	❤
0191	Number of 1 Bits	45%	Easy
0190	Reverse Bits	33%	Easy
0189	Rotate Array	31%	Easy
0188	Best Time to Buy and Sell Stock IV	27%	Hard	❤
0187	Repeated DNA Sequences	37%	Medium
0179	Largest Number	26%	Medium	❤
0174	Dungeon Game	28%	Hard	❤
0173	Binary Search Tree Iterator	51%	Medium	❤
0172	Factorial Trailing Zeroes	37%	Easy
0171	Excel Sheet Column Number	52%	Easy
0169	Majority Element	54%	Easy	❤
0168	Excel Sheet Column Title	29%	Easy	❤
0167	Two Sum II - Input array is sorted	51%	Easy
0166	Fraction to Recurring Decimal	20%	Medium	❤
0165	Compare Version Numbers	25%	Medium
0164	Maximum Gap	33%	Hard
0162	Find Peak Element	42%	Medium
0160	Intersection of Two Linked Lists	36%	Easy
0155	Min Stack	39%	Easy
0154	Find Minimum in Rotated Sorted Array II	39%	Hard
0153	Find Minimum in Rotated Sorted Array	43%	Medium
0152	Maximum Product Subarray	30%	Medium	❤
0150	Evaluate Reverse Polish Notation	33%	Medium
0149	Max Points on a Line	16%	Hard	❤
0148	Sort List	37%	Medium	❤
0147	Insertion Sort List	38%	Medium	❤
0146	LRU Cache	28%	Medium	❤
0145	Binary Tree Postorder Traversal	50%	Hard
0144	Binary Tree Preorder Traversal	53%	Medium	❤
0143	Reorder List	32%	Medium	❤
0142	Linked List Cycle II	34%	Medium	❤
0141	Linked List Cycle	38%	Easy
0140	Word Break II	28%	Hard	❤
0139	Word Break	37%	Medium	❤
0137	Single Number II	47%	Medium
0136	Single Number	61%	Easy
0135	Candy	29%	Hard
0134	Gas Station	35%	Medium	❤
0132	Palindrome Partitioning II	28%	Hard	❤
0131	Palindrome Partitioning	43%	Medium	❤
0130	Surrounded Regions	24%	Medium	❤
0129	Sum Root to Leaf Numbers	44%	Medium
0128	Longest Consecutive Sequence	43%	Hard
0127	Word Ladder	26%	Medium	❤
0126	Word Ladder II	19%	Hard	❤
0125	Valid Palindrome	32%	Easy
0124	Binary Tree Maximum Path Sum	31%	Hard	❤
0123	Best Time to Buy and Sell Stock III	35%	Hard
0122	Best Time to Buy and Sell Stock II	53%	Easy
0121	Best Time to Buy and Sell Stock	48%	Easy
0120	Triangle	41%	Medium	❤
0119	Pascal's Triangle II	45%	Easy
0118	Pascal's Triangle	48%	Easy
0115	Distinct Subsequences	36%	Hard	❤
0114	Flatten Binary Tree to Linked List	44%	Medium	❤
0113	Path Sum II	42%	Medium
0112	Path Sum	39%	Easy
0111	Minimum Depth of Binary Tree	36%	Easy
0110	Balanced Binary Tree	42%	Easy
0109	Convert Sorted List to Binary Search Tree	43%	Medium
0108	Convert Sorted Array to Binary Search Tree	53%	Easy
0107	Binary Tree Level Order Traversal II	48%	Easy
0106	Construct Binary Tree from Inorder and Postorder Traversal	41%	Medium	❤
0105	Construct Binary Tree from Preorder and Inorder Traversal	43%	Medium	❤
0104	Maximum Depth of Binary Tree	62%	Easy
0103	Binary Tree Zigzag Level Order Traversal	43%	Medium
0102	Binary Tree Level Order Traversal	50%	Medium
0101	Symmetric Tree	44%	Easy	❤
0100	Same Tree	51%	Easy
0099	Recover Binary Search Tree	36%	Hard	❤
0098	Validate Binary Search Tree	26%	Medium	❤
0097	Interleaving String	29%	Hard	❤
0096	Unique Binary Search Trees	48%	Medium
0095	Unique Binary Search Trees II	37%	Medium	❤
0094	Binary Tree Inorder Traversal	59%	Medium
0093	Restore IP Addresses	32%	Medium	❤
0092	Reverse Linked List II	36%	Medium
0091	Decode Ways	23%	Medium
0090	Subsets II	44%	Medium
0089	Gray Code	47%	Medium
0088	Merge Sorted Array	37%	Easy
0087	Scramble String	32%	Hard	❤
0086	Partition List	38%	Medium
0085	Maximal Rectangle	35%	Hard	❤
0084	Largest Rectangle in Histogram	32%	Hard
0083	Remove Duplicates from Sorted List	43%	Easy
0082	Remove Duplicates from Sorted List II	34%	Medium
0081	Search in Rotated Sorted Array II	32%	Medium
0080	Remove Duplicates from Sorted Array II	41%	Medium
0079	Word Search	32%	Medium
0078	Subsets	56%	Medium
0077	Combinations	50%	Medium
0076	Minimum Window Substring	32%	Hard
0075	Sort Colors	43%	Medium
0074	Search a 2D Matrix	35%	Medium
0073	Set Matrix Zeroes	41%	Medium
0072	Edit Distance	40%	Hard
0071	Simplify Path	30%	Medium
0070	Climbing Stairs	45%	Easy
0069	Sqrt(x)	32%	Easy
0068	Text Justification	24%	Hard
0067	Add Binary	41%	Easy
0066	Plus One	41%	Easy
0065	Valid Number	14%	Hard
0064	Minimum Path Sum	49%	Medium
0063	Unique Paths II	33%	Medium
0062	Unique Paths	49%	Medium
0061	Rotate List	28%	Medium
0060	Permutation Sequence	34%	Medium
0059	Spiral Matrix II	49%	Medium
0058	Length of Last Word	32%	Easy
0057	Insert Interval	32%	Hard
0056	Merge Intervals	37%	Medium
0055	Jump Game	32%	Medium
0054	Spiral Matrix	31%	Medium
0053	Maximum Subarray	44%	Easy
0052	N-Queens II	54%	Hard
0051	N-Queens	42%	Hard
0050	Pow(x, n)	28%	Medium
0049	Group Anagrams	50%	Medium
0048	Rotate Image	51%	Medium
0047	Permutations II	42%	Medium
0046	Permutations	58%	Medium
0045	Jump Game II	29%	Hard
0044	Wildcard Matching	23%	Hard
0043	Multiply Strings	31%	Medium
0042	Trapping Rain Water	45%	Hard
0041	First Missing Positive	30%	Hard
0040	Combination Sum II	44%	Medium
0039	Combination Sum	51%	Medium
0038	Count and Say	42%	Easy
0037	Sudoku Solver	39%	Hard
0036	Valid Sudoku	45%	Medium
0035	Search Insert Position	41%	Easy
0034	Find First and Last Position of Element in Sorted Array	34%	Medium
0033	Search in Rotated Sorted Array	33%	Medium
0032	Longest Valid Parentheses	26%	Hard
0031	Next Permutation	31%	Medium
0030	Substring with Concatenation of All Words	24%	Hard
0029	Divide Two Integers	16%	Medium
0028	Implement strStr()	33%	Easy
0027	Remove Element	45%	Easy
0026	Remove Duplicates from Sorted Array	42%	Easy
0025	Reverse Nodes in k-Group	38%	Hard
0024	Swap Nodes in Pairs	46%	Medium
0023	Merge k Sorted Lists	36%	Hard
0022	Generate Parentheses	57%	Medium
0021	Merge Two Sorted Lists	49%	Easy
0020	Valid Parentheses	37%	Easy
0019	Remove Nth Node From End of List	34%	Medium
0018	4Sum	31%	Medium
0017	Letter Combinations of a Phone Number	43%	Medium
0016	3Sum Closest	45%	Medium
0015	3Sum	25%	Medium
0014	Longest Common Prefix	34%	Easy
0013	Roman to Integer	53%	Easy
0012	Integer to Roman	52%	Medium
0011	Container With Most Water	47%	Medium
0010	Regular Expression Matching	25%	Hard
0009	Palindrome Number	45%	Easy
0008	String to Integer (atoi)	14%	Medium
0007	Reverse Integer	25%	Easy
0006	ZigZag Conversion	33%	Medium
0005	Longest Palindromic Substring	28%	Medium
0004	Median of Two Sorted Arrays	27%	Hard
0003	Longest Substring Without Repeating Characters	29%	Medium
0002	Add Two Numbers	32%	Medium
0001	Two Sum	44%	Easy

以下免费的算法题，暂时不能提交 Go 解答

helper

helper 会处理大部分琐碎的工作。

notes

notes 记录了我答题过程中，对知识点的总结。

kit

针对 LeetCode 中经常出现的以下数据结构，在 kit 中进行了定义，并添加了与 []int 相互转换的函数。利用 Go 1.9 添加的 type alias 功能，易于添加单元测试。

致谢

感谢所有贡献者的辛苦付出

感谢 JetBrains

Download

LeetCode-in-Go.zip

Comments(10)

1

41题那里有个问题

41题的问题

题目要求时间复杂度应为O(n)和常数级别的空间

而你的代码有两次遍历nums

for i := 0; i < len(nums); i++ { for 0 <= nums[i]-1 && nums[i]-1 < len(nums) && nums[i] != nums[nums[i]-1] { nums[i], nums[nums[i]-1] = nums[nums[i]-1], nums[i] } }

for k := range nums { if nums[k] != k+1 { return k + 1 } }

第一次遍历就是0(n)了，再加上第二次遍历，是否不符合题意？
2

go run: cannot run non-main package

与题解有关的 issue 模板

题号

0001

我的疑问

我在使用 command 下 go run two-sum_test.go 時，遇到 go run: cannot run non-main package 的錯誤訊息，請問這個要怎麼解決呢？加入 main function 就好嗎？感謝

有偿答疑，点击后，扫码付费
3

关于做题的badge

你好，上次看了你的readme之后，觉得你加在readme的leetcode badge的创意非常好，但是需要手动添加，这边我做了一个自动的。

这个是和你的readme完全一致的：

[![LeetCode 排名](https://leetcode-badge.chyroc.cn/?name=aQuaYi&leetcode_badge_style=aQuaYi-{{.accepted_submission}}-blue.svg)](https://leetcode.com/aQuaYi/)

这边还有其他的风格，项目地址：https://github.com/Chyroc/leetcode-badge
4

简化测试用例的书写

可以使用反射简化测试用例：

https://github.com/Chyroc/algorithms-go/blob/master/test/test_test.go#L11-L62

实现在这里： https://github.com/Chyroc/algorithms-go/blob/master/test/run_case.go

看到你的项目里面的测试写的特别的长。。

如果不改的话，可以直接close我

349的一点优化

func intersection(nums1 []int, nums2 []int) []int {
    appear := map[int]struct{}{} // 记录 nums1 中出现的数字，value 用 struct{} 不占内存
    
    for _, num := range nums1 {
        appear[num] = struct{}{}
    }

    ans := []int{}
    for _, num := range nums2 {
        if _, ok := appear[num]; ok {
            ans = append(ans, num)
            delete(appear, num) // 确保结果中元素唯一
        }
    }

    return ans 
}

6

Failed passing 686. Repeated String Match
Hi, @aQuaYi. Your solution doesn't pass all the latest test cases(51/55).
```
Input:
"abc"
"cabcabca"
Output:
-1
Expected:
4
```
Mind me to pull a request?
7

Activating Open Collective
Hi, I'm making updates for Open Collective. Either you or another core contributor signed this repository up for Open Collective. This pull request adds financial contributors from your Open Collective https://opencollective.com/LeetCode-in-Go ❤️

What it does:
- adds a badge to show the latest number of financial contributors
- adds a banner displaying contributors to the project on GitHub
- adds a banner displaying all individuals contributing financially on Open Collective
- adds a section displaying all organizations contributing financially on Open Collective, with their logo and a link to their website
P.S: As with any pull request, feel free to comment or suggest changes.

Thank you for your great contribution to the Open Source community. You are awesome! 🙌 And welcome to the Open Collective community! 😊

Come chat with us in the #opensource channel on https://slack.opencollective.com - great place to ask questions and share best practices with other Open Source sustainers!

321 题测试用例没有通过

{
	[]int{6, 3, 9, 0, 5, 6},
	[]int{2, 2, 5, 2, 1, 4, 4, 5, 7, 8, 9, 3, 1, 6, 9, 7, 0},
	23,
	[]int{6, 3, 9, 2, 2, 5, 2, 1, 4, 4, 5, 7, 8, 9, 3, 1, 6, 9, 7, 0, 5, 6, 0},
},

这个测试测试用例

21. Merge Two Sorted Lists

Line 98: Char 37: cannot use param_1 (type *leetcode.ListNode) as type *ListNode in argument to __helper__ (solution.go)
Line 98: Char 37: cannot use param_2 (type *leetcode.ListNode) as type *ListNode in argument to __helper__ (solution.go)

https://github.com/aQuaYi/LeetCode-in-Go/blob/master/Algorithms/0021.merge-two-sorted-lists/merge-two-sorted-lists.go#L1

10

update problem 0004 with required time complexity

The problem of "4. Median of two sorted arrays" is requiring O(log(m+n)). Therefore, merging two arrays is not the best solution as the time complexity is O(m+n). Ironically, due to the big constant, the logarithmic solution is slower than the linear one in leetcode's testdata.

Go Solution for LeetCode algorithms problems, 100% coverage.

LeetCode 的 Go 解答

进度

题解

helper

notes

kit

致谢

Download

Comments(10)

41题那里有个问题

41题的问题

题目要求时间复杂度应为O(n)和常数级别的空间

go run: cannot run non-main package

与题解有关的 issue 模板

题号

我的疑问

我在使用 command 下 go run two-sum_test.go 時，遇到 go run: cannot run non-main package 的錯誤訊息，請問這個要怎麼解決呢？加入 main function 就好嗎？ 感謝

关于做题的badge

简化测试用例的书写

349的一点优化

Failed passing 686. Repeated String Match

Activating Open Collective

321 题 测试用例没有通过

21. Merge Two Sorted Lists

update problem 0004 with required time complexity

Popular Tag

Related

我在使用 command 下 go run two-sum_test.go 時，遇到 go run: cannot run non-main package 的錯誤訊息，請問這個要怎麼解決呢？加入 main function 就好嗎？感謝

321 题测试用例没有通过