leetcode-in-go

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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	220	375	164	759
Total	238	406	174	818

题解

题号	题目	通过率	难度	收藏
1028	* Recover a Tree From Preorder Traversal	72%	Hard
1027	* Longest Arithmetic Sequence	43%	Medium
1026	* Maximum Difference Between Node and Ancestor	57%	Medium
1025	* Divisor Game	60%	Easy
1024	* Video Stitching	47%	Medium
1023	* Camelcase Matching	57%	Medium
1022	* Sum of Root To Leaf Binary Numbers	47%	Easy
1021	* Remove Outermost Parentheses	78%	Easy
1020	* Number of Enclaves	54%	Medium
1019	* Next Greater Node In Linked List	56%	Medium
1018	* Binary Prefix Divisible By 5	45%	Easy
1017	* Convert to Base -2	55%	Medium
1016	* Binary String With Substrings Representing 1 To N	64%	Medium
1015	* Smallest Integer Divisible by K	26%	Medium
1014	* Best Sightseeing Pair	47%	Medium
1013	* Partition Array Into Three Parts With Equal Sum	54%	Easy
1012	* Numbers With Repeated Digits	34%	Hard
1011	* Capacity To Ship Packages Within D Days	51%	Medium
1010	* Pairs of Songs With Total Durations Divisible by 60	44%	Easy
1009	* Complement of Base 10 Integer	58%	Easy
1008	* Construct Binary Search Tree from Preorder Traversal	72%	Medium
1007	* Minimum Domino Rotations For Equal Row	46%	Medium
1006	* Clumsy Factorial	54%	Medium
1005	* Maximize Sum Of Array After K Negations	49%	Easy
1004	* Max Consecutive Ones III	52%	Medium
1003	* Check If Word Is Valid After Substitutions	51%	Medium
1002	* Find Common Characters	66%	Easy
1001	* Grid Illumination	34%	Hard
1000	* Minimum Cost to Merge Stones	28%	Hard
0999	* Available Captures for Rook	66%	Easy
0998	* Maximum Binary Tree II	62%	Medium
0997	* Find the Town Judge	48%	Easy
0996	* Number of Squareful Arrays	47%	Hard
0995	* Minimum Number of K Consecutive Bit Flips	49%	Hard
0994	* Rotting Oranges	46%	Easy
0993	* Cousins in Binary Tree	52%	Easy
0992	* Subarrays with K Different Integers	44%	Hard
0991	* Broken Calculator	39%	Medium
0990	* Satisfiability of Equality Equations	39%	Medium
0989	* Add to Array-Form of Integer	44%	Easy
0988	* Smallest String Starting From Leaf	48%	Medium
0987	* Vertical Order Traversal of a Binary Tree	32%	Medium
0986	* Interval List Intersections	62%	Medium
0985	* Sum of Even Numbers After Queries	64%	Easy
0984	String Without AAA or BBB	32%	Medium
0983	* Minimum Cost For Tickets	57%	Medium
0982	* Triples with Bitwise AND Equal To Zero	53%	Hard
0981	* Time Based Key-Value Store	50%	Medium
0980	Unique Paths III	71%	Hard	❤
0979	* Distribute Coins in Binary Tree	66%	Medium
0978	* Longest Turbulent Subarray	45%	Medium
0977	* Squares of a Sorted Array	72%	Easy
0976	* Largest Perimeter Triangle	56%	Easy
0975	* Odd Even Jump	49%	Hard
0974	* Subarray Sums Divisible by K	43%	Medium
0973	* K Closest Points to Origin	63%	Medium
0972	* Equal Rational Numbers	40%	Hard
0971	* Flip Binary Tree To Match Preorder Traversal	42%	Medium
0970	* Powerful Integers	39%	Easy
0969	Pancake Sorting	61%	Medium
0968	Binary Tree Cameras	34%	Hard
0967	Numbers With Same Consecutive Differences	36%	Medium
0966	Vowel Spellchecker	40%	Medium
0965	Univalued Binary Tree	66%	Easy
0964	Least Operators to Express Number	40%	Hard	❤
0963	Minimum Area Rectangle II	43%	Medium
0962	Maximum Width Ramp	41%	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	62%	Medium
0958	Check Completeness of a Binary Tree	46%	Medium
0957	Prison Cells After N Days	37%	Medium
0956	Tallest Billboard	37%	Hard	❤
0955	Delete Columns to Make Sorted II	31%	Medium	❤
0954	Array of Doubled Pairs	34%	Medium
0953	Verifying an Alien Dictionary	55%	Easy
0952	Largest Component Size by Common Factor	26%	Hard	❤
0951	Flip Equivalent Binary Trees	65%	Medium
0950	Reveal Cards In Increasing Order	71%	Medium
0949	Largest Time for Given Digits	33%	Easy	❤
0948	Bag of Tokens	39%	Medium	❤
0947	Most Stones Removed with Same Row or Column	54%	Medium	❤
0946	Validate Stack Sequences	57%	Medium
0945	Minimum Increment to Make Array Unique	42%	Medium	❤
0944	Delete Columns to Make Sorted	69%	Easy
0943	Find the Shortest Superstring	36%	Hard	❤
0942	DI String Match	70%	Easy
0941	Valid Mountain Array	35%	Easy
0940	Distinct Subsequences II	38%	Hard	❤
0939	Minimum Area Rectangle	50%	Medium	❤
0938	Range Sum of BST	80%	Medium
0937	Reorder Log Files	59%	Easy
0936	Stamping The Sequence	35%	Hard	❤
0935	Knight Dialer	39%	Medium
0934	Shortest Bridge	43%	Medium
0933	Number of Recent Calls	69%	Easy
0932	Beautiful Array	52%	Medium	❤
0931	Minimum Falling Path Sum	58%	Medium
0930	Binary Subarrays With Sum	37%	Medium
0929	Unique Email Addresses	73%	Easy
0928	Minimize Malware Spread II	38%	Hard
0927	Three Equal Parts	30%	Hard
0926	Flip String to Monotone Increasing	48%	Medium
0925	Long Pressed Name	44%	Easy
0924	Minimize Malware Spread	39%	Hard
0923	3Sum With Multiplicity	33%	Medium	❤
0922	Sort Array By Parity II	66%	Easy
0921	Minimum Add to Make Parentheses Valid	69%	Medium	❤
0920	Number of Music Playlists	43%	Hard	❤
0919	Complete Binary Tree Inserter	55%	Medium	❤
0918	Maximum Sum Circular Subarray	31%	Medium	❤
0917	Reverse Only Letters	55%	Easy
0916	Word Subsets	44%	Medium
0915	Partition Array into Disjoint Intervals	42%	Medium	❤
0914	X of a Kind in a Deck of Cards	34%	Easy
0913	Cat and Mouse	28%	Hard	❤
0912	* Sort an Array	66%	Medium
0911	Online Election	45%	Medium	❤
0910	Smallest Range II	23%	Medium	❤
0909	Snakes and Ladders	32%	Medium	❤
0908	Smallest Range I	64%	Easy
0907	Sum of Subarray Minimums	26%	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	42%	Hard	❤
0902	Numbers At Most N Given Digit Set	28%	Hard
0901	Online Stock Span	48%	Medium	❤
0900	RLE Iterator	49%	Medium
0899	Orderly Queue	46%	Hard
0898	Bitwise ORs of Subarrays	33%	Medium	❤
0897	Increasing Order Search Tree	63%	Easy	❤
0896	Monotonic Array	54%	Easy	❤
0895	Maximum Frequency Stack	54%	Hard	❤
0894	All Possible Full Binary Trees	70%	Medium
0893	Groups of Special-Equivalent Strings	62%	Easy
0892	Surface Area of 3D Shapes	55%	Easy
0891	Sum of Subsequence Widths	28%	Hard
0890	Find and Replace Pattern	70%	Medium
0889	Construct Binary Tree from Preorder and Postorder Traversal	59%	Medium
0888	Fair Candy Swap	56%	Easy
0887	Super Egg Drop	24%	Hard
0886	Possible Bipartition	40%	Medium
0885	Spiral Matrix III	63%	Medium
0884	Uncommon Words from Two Sentences	60%	Easy
0883	Projection Area of 3D Shapes	65%	Easy
0882	Reachable Nodes In Subdivided Graph	37%	Hard
0881	Boats to Save People	43%	Medium
0880	Decoded String at Index	22%	Medium
0879	Profitable Schemes	35%	Hard	❤
0878	Nth Magical Number	25%	Hard
0877	Stone Game	61%	Medium
0876	Middle of the Linked List	63%	Easy
0875	Koko Eating Bananas	45%	Medium
0874	Walking Robot Simulation	31%	Easy
0873	Length of Longest Fibonacci Subsequence	45%	Medium
0872	Leaf-Similar Trees	62%	Easy
0871	Minimum Number of Refueling Stops	28%	Hard
0870	Advantage Shuffle	41%	Medium
0869	Reordered Power of 2	50%	Medium
0868	Binary Gap	59%	Easy
0867	Transpose Matrix	63%	Easy
0866	Prime Palindrome	19%	Medium	❤
0865	Smallest Subtree with all the Deepest Nodes	55%	Medium
0864	Shortest Path to Get All Keys	35%	Hard	❤
0863	All Nodes Distance K in Binary Tree	46%	Medium	❤
0862	Shortest Subarray with Sum at Least K	21%	Hard	❤
0861	Score After Flipping Matrix	69%	Medium
0860	Lemonade Change	50%	Easy
0859	Buddy Strings	27%	Easy
0858	Mirror Reflection	51%	Medium
0857	Minimum Cost to Hire K Workers	47%	Hard	❤
0856	Score of Parentheses	55%	Medium
0855	Exam Room	37%	Medium
0854	K-Similar Strings	33%	Hard	❤
0853	Car Fleet	39%	Medium
0852	Peak Index in a Mountain Array	69%	Easy	❤
0851	Loud and Rich	47%	Medium	❤
0850	Rectangle Area II	44%	Hard	❤
0849	Maximize Distance to Closest Person	40%	Easy	❤
0848	Shifting Letters	40%	Medium
0847	Shortest Path Visiting All Nodes	46%	Hard	❤
0846	Hand of Straights	48%	Medium	❤
0845	Longest Mountain in Array	34%	Medium
0844	Backspace String Compare	45%	Easy
0843	Guess the Word	42%	Hard	❤
0842	Split Array into Fibonacci Sequence	34%	Medium
0841	Keys and Rooms	59%	Medium
0840	Magic Squares In Grid	35%	Easy
0839	Similar String Groups	34%	Hard	❤
0838	Push Dominoes	43%	Medium	❤
0837	New 21 Game	31%	Medium	❤
0836	Rectangle Overlap	46%	Easy
0835	Image Overlap	51%	Medium
0834	Sum of Distances in Tree	39%	Hard	❤
0833	Find And Replace in String	45%	Medium
0832	Flipping an Image	72%	Easy
0831	Masking Personal Information	41%	Medium
0830	Positions of Large Groups	47%	Easy
0829	Consecutive Numbers Sum	32%	Hard	❤
0828	Unique Letter String	38%	Hard	❤
0827	Making A Large Island	43%	Hard	❤
0826	Most Profit Assigning Work	35%	Medium	❤
0825	Friends Of Appropriate Ages	35%	Medium
0824	Goat Latin	57%	Easy
0823	Binary Trees With Factors	32%	Medium
0822	Card Flipping Game	40%	Medium
0821	Shortest Distance to a Character	63%	Easy
0820	Short Encoding of Words	46%	Medium	❤
0819	Most Common Word	42%	Easy
0818	Race Car	34%	Hard	❤
0817	Linked List Components	54%	Medium
0816	Ambiguous Coordinates	43%	Medium
0815	Bus Routes	39%	Hard	❤
0814	Binary Tree Pruning	70%	Medium
0813	Largest Sum of Averages	44%	Medium	❤
0812	Largest Triangle Area	55%	Easy
0811	Subdomain Visit Count	64%	Easy
0810	Chalkboard XOR Game	44%	Hard	❤
0809	Expressive Words	42%	Medium
0808	Soup Servings	36%	Medium
0807	Max Increase to Keep City Skyline	81%	Medium
0806	Number of Lines To Write String	62%	Easy
0805	Split Array With Same Average	23%	Hard	❤
0804	Unique Morse Code Words	74%	Easy
0803	Bricks Falling When Hit	28%	Hard	❤
0802	Find Eventual Safe States	43%	Medium	❤
0801	Minimum Swaps To Make Sequences Increasing	34%	Medium	❤
0799	Champagne Tower	33%	Medium	❤
0798	Smallest Rotation with Highest Score	39%	Hard	❤
0797	All Paths From Source to Target	69%	Medium
0796	Rotate String	48%	Easy
0795	Number of Subarrays with Bounded Maximum	42%	Medium	❤
0794	Valid Tic-Tac-Toe State	29%	Medium
0793	Preimage Size of Factorial Zeroes Function	38%	Hard	❤
0792	Number of Matching Subsequences	42%	Medium	❤
0791	Custom Sort String	61%	Medium
0790	Domino and Tromino Tiling	35%	Medium	❤
0789	Escape The Ghosts	55%	Medium
0788	Rotated Digits	53%	Easy
0787	Cheapest Flights Within K Stops	34%	Medium	❤
0786	K-th Smallest Prime Fraction	39%	Hard	❤
0785	Is Graph Bipartite?	42%	Medium	❤
0784	Letter Case Permutation	55%	Easy	❤
0783	Minimum Distance Between BST Nodes	50%	Easy
0782	Transform to Chessboard	39%	Hard
0781	Rabbits in Forest	51%	Medium
0780	Reaching Points	27%	Hard
0779	K-th Symbol in Grammar	37%	Medium
0778	Swim in Rising Water	47%	Hard
0777	Swap Adjacent in LR String	33%	Medium
0775	Global and Local Inversions	38%	Medium
0773	Sliding Puzzle	51%	Hard
0771	Jewels and Stones	82%	Easy
0770	Basic Calculator IV	45%	Hard	❤
0769	Max Chunks To Make Sorted	51%	Medium
0768	Max Chunks To Make Sorted II	45%	Hard
0767	Reorganize String	41%	Medium
0766	Toeplitz Matrix	61%	Easy
0765	Couples Holding Hands	51%	Hard
0764	Largest Plus Sign	43%	Medium
0763	Partition Labels	69%	Medium
0762	Prime Number of Set Bits in Binary Representation	58%	Easy
0761	Special Binary String	50%	Hard
0757	Set Intersection Size At Least Two	36%	Hard
0756	Pyramid Transition Matrix	50%	Medium	❤
0754	Reach a Number	32%	Easy	❤
0753	Cracking the Safe	45%	Hard	❤
0752	Open the Lock	45%	Medium	❤
0749	Contain Virus	40%	Hard
0748	Shortest Completing Word	53%	Easy
0747	Largest Number At Least Twice of Others	40%	Easy
0746	Min Cost Climbing Stairs	46%	Easy
0745	Prefix and Suffix Search	30%	Hard
0744	Find Smallest Letter Greater Than Target	43%	Easy
0743	Network Delay Time	41%	Medium
0741	Cherry Pickup	28%	Hard
0740	Delete and Earn	45%	Medium	❤
0739	Daily Temperatures	59%	Medium	❤
0738	Monotone Increasing Digits	41%	Medium
0736	Parse Lisp Expression	44%	Hard	❤
0735	Asteroid Collision	38%	Medium
0733	Flood Fill	50%	Easy
0732	My Calendar III	54%	Hard
0731	My Calendar II	43%	Medium	❤
0730	Count Different Palindromic Subsequences	38%	Hard	❤
0729	My Calendar I	46%	Medium
0728	Self Dividing Numbers	69%	Easy
0726	Number of Atoms	44%	Hard	❤
0725	Split Linked List in Parts	48%	Medium
0724	Find Pivot Index	40%	Easy
0722	Remove Comments	30%	Medium	❤
0721	Accounts Merge	39%	Medium	❤
0720	Longest Word in Dictionary	44%	Easy
0719	Find K-th Smallest Pair Distance	28%	Hard	❤
0718	Maximum Length of Repeated Subarray	45%	Medium	❤
0717	1-bit and 2-bit Characters	49%	Easy
0715	Range Module	34%	Hard
0714	Best Time to Buy and Sell Stock with Transaction Fee	50%	Medium	❤
0713	Subarray Product Less Than K	36%	Medium	❤
0712	Minimum ASCII Delete Sum for Two Strings	53%	Medium	❤
0710	Random Pick with Blacklist	30%	Hard	❤
0709	To Lower Case	76%	Easy
0707	Design Linked List	23%	Easy	❤
0706	Design HashMap	55%	Easy
0705	Design HashSet	52%	Easy
0704	Binary Search	46%	Easy
0703	Kth Largest Element in a Stream	46%	Easy
0701	Insert into a Binary Search Tree	74%	Medium
0700	Search in a Binary Search Tree	67%	Easy
0699	Falling Squares	39%	Hard
0698	Partition to K Equal Sum Subsets	41%	Medium	❤
0697	Degree of an Array	49%	Easy
0696	Count Binary Substrings	53%	Easy
0695	Max Area of Island	56%	Medium	❤
0693	Binary Number with Alternating Bits	57%	Easy
0692	Top K Frequent Words	45%	Medium
0691	Stickers to Spell Word	37%	Hard	❤
0689	Maximum Sum of 3 Non-Overlapping Subarrays	43%	Hard
0688	Knight Probability in Chessboard	43%	Medium
0687	Longest Univalue Path	33%	Easy
0686	Repeated String Match	31%	Easy	❤
0685	Redundant Connection II	30%	Hard	❤
0684	Redundant Connection	51%	Medium
0682	Baseball Game	60%	Easy
0680	Valid Palindrome II	34%	Easy
0679	24 Game	42%	Hard	❤
0678	Valid Parenthesis String	32%	Medium	❤
0677	Map Sum Pairs	51%	Medium	❤
0676	Implement Magic Dictionary	51%	Medium
0675	Cut Off Trees for Golf Event	30%	Hard	❤
0674	Longest Continuous Increasing Subsequence	44%	Easy
0673	Number of Longest Increasing Subsequence	33%	Medium	❤
0672	Bulb Switcher II	49%	Medium
0671	Second Minimum Node In a Binary Tree	43%	Easy
0670	Maximum Swap	39%	Medium	❤
0669	Trim a Binary Search Tree	60%	Easy
0668	Kth Smallest Number in Multiplication Table	41%	Hard
0667	Beautiful Arrangement II	51%	Medium
0665	Non-decreasing Array	19%	Easy
0664	Strange Printer	35%	Hard	❤
0662	Maximum Width of Binary Tree	39%	Medium
0661	Image Smoother	48%	Easy
0659	Split Array into Consecutive Subsequences	40%	Medium	❤
0658	Find K Closest Elements	37%	Medium	❤
0657	Robot Return to Origin	71%	Easy
0655	Print Binary Tree	51%	Medium
0654	Maximum Binary Tree	75%	Medium	❤
0653	Two Sum IV - Input is a BST	52%	Easy
0652	Find Duplicate Subtrees	44%	Medium
0650	2 Keys Keyboard	46%	Medium
0649	Dota2 Senate	37%	Medium	❤
0648	Replace Words	51%	Medium
0647	Palindromic Substrings	56%	Medium	❤
0646	Maximum Length of Pair Chain	48%	Medium
0645	Set Mismatch	40%	Easy	❤
0643	Maximum Average Subarray I	39%	Easy
0641	Design Circular Deque	49%	Medium	❤
0640	Solve the Equation	40%	Medium
0639	Decode Ways II	24%	Hard
0638	Shopping Offers	48%	Medium	❤
0637	Average of Levels in Binary Tree	58%	Easy
0636	Exclusive Time of Functions	48%	Medium	❤
0633	Sum of Square Numbers	32%	Easy
0632	Smallest Range	46%	Hard
0630	Course Schedule III	31%	Hard	❤
0629	K Inverse Pairs Array	29%	Hard
0628	Maximum Product of Three Numbers	45%	Easy	❤
0623	Add One Row to Tree	47%	Medium
0622	Design Circular Queue	38%	Medium
0621	Task Scheduler	45%	Medium	❤
0617	Merge Two Binary Trees	69%	Easy
0611	Valid Triangle Number	44%	Medium	❤
0609	Find Duplicate File in System	54%	Medium
0606	Construct String from Binary Tree	51%	Easy
0605	Can Place Flowers	30%	Easy	❤
0600	Non-negative Integers without Consecutive Ones	32%	Hard	❤
0599	Minimum Index Sum of Two Lists	47%	Easy
0598	Range Addition II	48%	Easy
0594	Longest Harmonious Subsequence	43%	Easy
0593	Valid Square	40%	Medium
0592	Fraction Addition and Subtraction	46%	Medium
0591	Tag Validator	32%	Hard	❤
0587	Erect the Fence	34%	Hard	❤
0583	Delete Operation for Two Strings	44%	Medium	❤
0581	Shortest Unsorted Continuous Subarray	29%	Easy	❤
0576	Out of Boundary Paths	31%	Medium	❤
0575	Distribute Candies	59%	Easy
0572	Subtree of Another Tree	41%	Easy	❤
0567	Permutation in String	38%	Medium
0566	Reshape the Matrix	58%	Easy
0565	Array Nesting	52%	Medium
0564	Find the Closest Palindrome	18%	Hard
0563	Binary Tree Tilt	46%	Easy
0561	Array Partition I	68%	Easy
0560	Subarray Sum Equals K	42%	Medium	❤
0557	Reverse Words in a String III	63%	Easy
0556	Next Greater Element III	29%	Medium
0554	Brick Wall	47%	Medium
0553	Optimal Division	55%	Medium
0552	Student Attendance Record II	32%	Hard	❤
0551	Student Attendance Record I	45%	Easy
0547	Friend Circles	53%	Medium	❤
0546	Remove Boxes	37%	Hard	❤
0543	Diameter of Binary Tree	46%	Easy
0542	01 Matrix	35%	Medium	❤
0541	Reverse String II	45%	Easy
0540	Single Element in a Sorted Array	57%	Medium
0539	Minimum Time Difference	47%	Medium
0538	Convert BST to Greater Tree	50%	Easy
0537	Complex Number Multiplication	65%	Medium
0532	K-diff Pairs in an Array	29%	Easy
0530	Minimum Absolute Difference in BST	50%	Easy	❤
0529	Minesweeper	52%	Medium
0528	Random Pick with Weight	42%	Medium
0526	Beautiful Arrangement	54%	Medium	❤
0525	Contiguous Array	42%	Medium	❤
0524	Longest Word in Dictionary through Deleting	45%	Medium
0523	Continuous Subarray Sum	24%	Medium	❤
0522	Longest Uncommon Subsequence II	32%	Medium
0521	Longest Uncommon Subsequence I	56%	Easy
0520	Detect Capital	52%	Easy
0519	Random Flip Matrix	32%	Medium
0518	Coin Change 2	42%	Medium	❤
0517	Super Washing Machines	36%	Hard	❤
0516	Longest Palindromic Subsequence	46%	Medium	❤
0515	Find Largest Value in Each Tree Row	57%	Medium
0514	Freedom Trail	40%	Hard
0513	Find Bottom Left Tree Value	58%	Medium
0509	Fibonacci Number	66%	Easy
0508	Most Frequent Subtree Sum	54%	Medium
0507	Perfect Number	34%	Easy
0506	Relative Ranks	48%	Easy
0504	Base 7	44%	Easy
0503	Next Greater Element II	50%	Medium	❤
0502	IPO	37%	Hard
0501	Find Mode in Binary Search Tree	39%	Easy	❤
0500	Keyboard Row	61%	Easy
0498	Diagonal Traverse	45%	Medium
0497	Random Point in Non-overlapping Rectangles	35%	Medium
0496	Next Greater Element I	59%	Easy
0495	Teemo Attacking	52%	Medium
0494	Target Sum	45%	Medium	❤
0493	Reverse Pairs	22%	Hard
0492	Construct the Rectangle	48%	Easy	❤
0491	Increasing Subsequences	41%	Medium	❤
0488	Zuma Game	38%	Hard	❤
0486	Predict the Winner	46%	Medium
0485	Max Consecutive Ones	54%	Easy
0483	Smallest Good Base	34%	Hard	❤
0482	License Key Formatting	40%	Easy
0481	Magical String	46%	Medium
0480	Sliding Window Median	31%	Hard	❤
0479	Largest Palindrome Product	27%	Hard
0478	Generate Random Point in a Circle	36%	Medium
0477	Total Hamming Distance	48%	Medium	❤
0476	Number Complement	62%	Easy
0475	Heaters	31%	Easy
0474	Ones and Zeroes	39%	Medium
0473	Matchsticks to Square	35%	Medium	❤
0472	Concatenated Words	33%	Hard
0470	Implement Rand10() Using Rand7()	44%	Medium	❤
0468	Validate IP Address	21%	Medium
0467	Unique Substrings in Wraparound String	33%	Medium	❤
0466	Count The Repetitions	27%	Hard	❤
0464	Can I Win	27%	Medium	❤
0463	Island Perimeter	60%	Easy
0462	Minimum Moves to Equal Array Elements II	52%	Medium
0461	Hamming Distance	70%	Easy
0460	LFU Cache	28%	Hard
0459	Repeated Substring Pattern	39%	Easy	❤
0458	Poor Pigs	45%	Hard
0457	Circular Array Loop	27%	Medium
0456	132 Pattern	27%	Medium	❤
0455	Assign Cookies	48%	Easy
0454	4Sum II	50%	Medium
0453	Minimum Moves to Equal Array Elements	49%	Easy
0452	Minimum Number of Arrows to Burst Balloons	46%	Medium
0451	Sort Characters By Frequency	55%	Medium
0450	Delete Node in a BST	39%	Medium	❤
0448	Find All Numbers Disappeared in an Array	53%	Easy
0447	Number of Boomerangs	49%	Easy
0446	Arithmetic Slices II - Subsequence	29%	Hard	❤
0445	Add Two Numbers II	49%	Medium	❤
0443	String Compression	37%	Easy	❤
0442	Find All Duplicates in an Array	60%	Medium
0441	Arranging Coins	37%	Easy
0440	K-th Smallest in Lexicographical Order	26%	Hard	❤
0438	Find All Anagrams in a String	36%	Easy
0437	Path Sum III	42%	Easy	❤
0436	Find Right Interval	42%	Medium
0435	Non-overlapping Intervals	41%	Medium	❤
0434	Number of Segments in a String	36%	Easy
0433	Minimum Genetic Mutation	37%	Medium
0432	All O`one Data Structure	29%	Hard	❤
0424	Longest Repeating Character Replacement	43%	Medium	❤
0423	Reconstruct Original Digits from English	45%	Medium
0421	Maximum XOR of Two Numbers in an Array	50%	Medium	❤
0420	Strong Password Checker	17%	Hard	❤
0419	Battleships in a Board	65%	Medium
0417	Pacific Atlantic Water Flow	37%	Medium
0416	Partition Equal Subset Sum	40%	Medium	❤
0415	Add Strings	43%	Easy
0414	Third Maximum Number	28%	Easy
0413	Arithmetic Slices	55%	Medium
0412	Fizz Buzz	59%	Easy
0410	Split Array Largest Sum	42%	Hard
0409	Longest Palindrome	47%	Easy
0407	Trapping Rain Water II	38%	Hard
0406	Queue Reconstruction by Height	59%	Medium	❤
0405	Convert a Number to Hexadecimal	41%	Easy
0404	Sum of Left Leaves	48%	Easy
0403	Frog Jump	35%	Hard	❤
0402	Remove K Digits	26%	Medium	❤
0401	Binary Watch	45%	Easy
0400	Nth Digit	30%	Easy	❤
0399	Evaluate Division	47%	Medium	❤
0398	Random Pick Index	49%	Medium
0397	Integer Replacement	31%	Medium	❤
0396	Rotate Function	35%	Medium	❤
0395	Longest Substring with At Least K Repeating Characters	38%	Medium
0394	Decode String	44%	Medium
0393	UTF-8 Validation	35%	Medium	❤
0392	Is Subsequence	46%	Medium	❤
0391	Perfect Rectangle	28%	Hard
0390	Elimination Game	43%	Medium	❤
0389	Find the Difference	52%	Easy
0388	Longest Absolute File Path	38%	Medium
0387	First Unique Character in a String	49%	Easy
0386	* Lexicographical Numbers	45%	Medium
0385	Mini Parser	31%	Medium	❤
0384	Shuffle an Array	49%	Medium	❤
0383	Ransom Note	49%	Easy
0382	Linked List Random Node	49%	Medium
0381	Insert Delete GetRandom O(1) - Duplicates allowed	31%	Hard	❤
0380	Insert Delete GetRandom O(1)	42%	Medium	❤
0378	Kth Smallest Element in a Sorted Matrix	49%	Medium	❤
0377	Combination Sum IV	43%	Medium
0376	Wiggle Subsequence	37%	Medium	❤
0375	Guess Number Higher or Lower II	37%	Medium
0373	Find K Pairs with Smallest Sums	33%	Medium	❤
0372	Super Pow	35%	Medium
0371	Sum of Two Integers	51%	Easy	❤
0368	Largest Divisible Subset	34%	Medium	❤
0367	Valid Perfect Square	39%	Easy
0365	Water and Jug Problem	28%	Medium	❤
0363	Max Sum of Rectangle No Larger Than K	34%	Hard	❤
0357	Count Numbers with Unique Digits	46%	Medium	❤
0355	Design Twitter	27%	Medium	❤
0354	Russian Doll Envelopes	33%	Hard	❤
0352	Data Stream as Disjoint Intervals	43%	Hard
0350	Intersection of Two Arrays II	47%	Easy	❤
0349	Intersection of Two Arrays	53%	Easy
0347	Top K Frequent Elements	54%	Medium
0345	Reverse Vowels of a String	41%	Easy
0344	Reverse String	63%	Easy
0343	Integer Break	47%	Medium
0342	Power of Four	40%	Easy
0338	Counting Bits	64%	Medium
0337	House Robber III	47%	Medium	❤
0336	Palindrome Pairs	30%	Hard	❤
0335	Self Crossing	26%	Hard
0334	Increasing Triplet Subsequence	39%	Medium	❤
0332	Reconstruct Itinerary	31%	Medium	❤
0331	Verify Preorder Serialization of a Binary Tree	38%	Medium	❤
0330	Patching Array	33%	Hard
0329	Longest Increasing Path in a Matrix	39%	Hard	❤
0328	Odd Even Linked List	48%	Medium	❤
0327	Count of Range Sum	32%	Hard	❤
0326	Power of Three	41%	Easy	❤
0324	Wiggle Sort II	27%	Medium
0322	Coin Change	29%	Medium	❤
0321	Create Maximum Number	25%	Hard	❤
0319	Bulb Switcher	43%	Medium	❤
0318	Maximum Product of Word Lengths	48%	Medium	❤
0316	Remove Duplicate Letters	32%	Hard	❤
0315	Count of Smaller Numbers After Self	37%	Hard	❤
0313	Super Ugly Number	40%	Medium	❤
0312	Burst Balloons	46%	Hard	❤
0310	Minimum Height Trees	29%	Medium
0309	Best Time to Buy and Sell Stock with Cooldown	43%	Medium	❤
0307	Range Sum Query - Mutable	28%	Medium
0306	Additive Number	28%	Medium
0304	Range Sum Query 2D - Immutable	31%	Medium
0303	Range Sum Query - Immutable	37%	Easy
0301	Remove Invalid Parentheses	38%	Hard	❤
0300	Longest Increasing Subsequence	40%	Medium	❤
0299	Bulls and Cows	39%	Medium
0295	Find Median from Data Stream	35%	Hard	❤
0292	Nim Game	55%	Easy	❤
0290	Word Pattern	34%	Easy
0289	Game of Life	44%	Medium	❤
0287	Find the Duplicate Number	49%	Medium	❤
0283	Move Zeroes	54%	Easy
0282	Expression Add Operators	32%	Hard	❤
0279	Perfect Squares	41%	Medium	❤
0275	H-Index II	35%	Medium	❤
0274	H-Index	34%	Medium
0273	Integer to English Words	24%	Hard	❤
0268	Missing Number	48%	Easy
0264	Ugly Number II	36%	Medium	❤
0263	Ugly Number	40%	Easy
0260	Single Number III	56%	Medium	❤
0258	Add Digits	53%	Easy
0257	Binary Tree Paths	45%	Easy
0242	Valid Anagram	51%	Easy
0241	Different Ways to Add Parentheses	49%	Medium
0240	Search a 2D Matrix II	40%	Medium	❤
0239	Sliding Window Maximum	37%	Hard	❤
0238	Product of Array Except Self	54%	Medium
0237	Delete Node in a Linked List	52%	Easy	❤
0236	Lowest Common Ancestor of a Binary Tree	36%	Medium	❤
0235	Lowest Common Ancestor of a Binary Search Tree	44%	Easy	❤
0234	Palindrome Linked List	35%	Easy
0233	Number of Digit One	30%	Hard	❤
0232	Implement Queue using Stacks	42%	Easy
0231	Power of Two	41%	Easy
0230	Kth Smallest Element in a BST	50%	Medium
0229	Majority Element II	31%	Medium	❤
0228	Summary Ranges	35%	Medium
0227	Basic Calculator II	33%	Medium
0226	Invert Binary Tree	57%	Easy
0225	Implement Stack using Queues	38%	Easy
0224	Basic Calculator	32%	Hard
0223	Rectangle Area	35%	Medium
0222	Count Complete Tree Nodes	32%	Medium
0221	Maximal Square	32%	Medium	❤
0220	Contains Duplicate III	19%	Medium	❤
0219	Contains Duplicate II	35%	Easy
0218	The Skyline Problem	31%	Hard	❤
0217	Contains Duplicate	51%	Easy
0216	Combination Sum III	51%	Medium
0215	Kth Largest Element in an Array	47%	Medium	❤
0214	Shortest Palindrome	27%	Hard	❤
0213	House Robber II	35%	Medium
0212	Word Search II	28%	Hard	❤
0211	Add and Search Word - Data structure design	29%	Medium	❤
0210	Course Schedule II	34%	Medium
0209	Minimum Size Subarray Sum	34%	Medium
0208	Implement Trie (Prefix Tree)	37%	Medium	❤
0207	Course Schedule	37%	Medium	❤
0206	Reverse Linked List	53%	Easy
0205	Isomorphic Strings	37%	Easy	❤
0204	Count Primes	28%	Easy	❤
0203	Remove Linked List Elements	35%	Easy
0202	Happy Number	44%	Easy
0201	Bitwise AND of Numbers Range	35%	Medium	❤
0200	Number of Islands	41%	Medium
0199	Binary Tree Right Side View	47%	Medium
0198	House Robber	40%	Easy	❤
0191	Number of 1 Bits	42%	Easy
0190	Reverse Bits	30%	Easy
0189	Rotate Array	29%	Easy
0188	Best Time to Buy and Sell Stock IV	26%	Hard	❤
0187	Repeated DNA Sequences	35%	Medium
0179	Largest Number	25%	Medium	❤
0174	Dungeon Game	26%	Hard	❤
0173	Binary Search Tree Iterator	48%	Medium	❤
0172	Factorial Trailing Zeroes	37%	Easy
0171	Excel Sheet Column Number	51%	Easy
0169	Majority Element	52%	Easy	❤
0168	Excel Sheet Column Title	28%	Easy	❤
0167	Two Sum II - Input array is sorted	49%	Easy
0166	Fraction to Recurring Decimal	19%	Medium	❤
0165	Compare Version Numbers	23%	Medium
0164	Maximum Gap	32%	Hard
0162	Find Peak Element	41%	Medium
0160	Intersection of Two Linked Lists	33%	Easy
0155	Min Stack	36%	Easy
0154	Find Minimum in Rotated Sorted Array II	39%	Hard
0153	Find Minimum in Rotated Sorted Array	42%	Medium
0152	Maximum Product Subarray	28%	Medium	❤
0150	Evaluate Reverse Polish Notation	31%	Medium
0149	Max Points on a Line	15%	Hard	❤
0148	Sort List	34%	Medium	❤
0147	Insertion Sort List	36%	Medium	❤
0146	LRU Cache	24%	Hard	❤
0145	Binary Tree Postorder Traversal	47%	Hard
0144	Binary Tree Preorder Traversal	50%	Medium	❤
0143	Reorder List	30%	Medium	❤
0142	Linked List Cycle II	31%	Medium	❤
0141	Linked List Cycle	36%	Easy
0140	Word Break II	27%	Hard	❤
0139	Word Break	34%	Medium	❤
0137	Single Number II	45%	Medium
0136	Single Number	59%	Easy
0135	Candy	28%	Hard
0134	Gas Station	33%	Medium	❤
0132	Palindrome Partitioning II	27%	Hard	❤
0131	Palindrome Partitioning	40%	Medium	❤
0130	Surrounded Regions	22%	Medium	❤
0129	Sum Root to Leaf Numbers	42%	Medium
0128	Longest Consecutive Sequence	41%	Hard
0127	Word Ladder	23%	Medium	❤
0126	Word Ladder II	17%	Hard	❤
0125	Valid Palindrome	30%	Easy
0124	Binary Tree Maximum Path Sum	29%	Hard	❤
0123	Best Time to Buy and Sell Stock III	33%	Hard
0122	Best Time to Buy and Sell Stock II	51%	Easy
0121	Best Time to Buy and Sell Stock	46%	Easy
0120	Triangle	38%	Medium	❤
0119	Pascal's Triangle II	42%	Easy
0118	Pascal's Triangle	45%	Easy
0115	Distinct Subsequences	34%	Hard	❤
0114	Flatten Binary Tree to Linked List	41%	Medium	❤
0113	Path Sum II	40%	Medium
0112	Path Sum	37%	Easy
0111	Minimum Depth of Binary Tree	35%	Easy
0110	Balanced Binary Tree	40%	Easy
0109	Convert Sorted List to Binary Search Tree	40%	Medium
0108	Convert Sorted Array to Binary Search Tree	50%	Easy
0107	Binary Tree Level Order Traversal II	46%	Easy
0106	Construct Binary Tree from Inorder and Postorder Traversal	38%	Medium	❤
0105	Construct Binary Tree from Preorder and Inorder Traversal	40%	Medium	❤
0104	Maximum Depth of Binary Tree	60%	Easy
0103	Binary Tree Zigzag Level Order Traversal	41%	Medium
0102	Binary Tree Level Order Traversal	47%	Medium
0101	Symmetric Tree	43%	Easy	❤
0100	Same Tree	49%	Easy
0099	Recover Binary Search Tree	34%	Hard	❤
0098	Validate Binary Search Tree	25%	Medium	❤
0097	Interleaving String	27%	Hard	❤
0096	Unique Binary Search Trees	45%	Medium
0095	Unique Binary Search Trees II	35%	Medium	❤
0094	Binary Tree Inorder Traversal	56%	Medium
0093	Restore IP Addresses	31%	Medium	❤
0092	Reverse Linked List II	34%	Medium
0091	Decode Ways	22%	Medium	❤
0090	Subsets II	42%	Medium	❤
0089	Gray Code	45%	Medium
0088	Merge Sorted Array	35%	Easy
0087	Scramble String	31%	Hard	❤
0086	Partition List	36%	Medium
0085	Maximal Rectangle	32%	Hard	❤
0084	Largest Rectangle in Histogram	30%	Hard
0083	Remove Duplicates from Sorted List	42%	Easy
0082	Remove Duplicates from Sorted List II	32%	Medium
0081	Search in Rotated Sorted Array II	32%	Medium
0080	Remove Duplicates from Sorted Array II	39%	Medium
0079	Word Search	30%	Medium
0078	Subsets	52%	Medium
0077	Combinations	46%	Medium
0076	Minimum Window Substring	30%	Hard
0075	Sort Colors	41%	Medium
0074	Search a 2D Matrix	34%	Medium
0073	Set Matrix Zeroes	39%	Medium
0072	Edit Distance	37%	Hard
0071	Simplify Path	28%	Medium
0070	Climbing Stairs	43%	Easy
0069	Sqrt(x)	31%	Easy
0068	Text Justification	22%	Hard
0067	Add Binary	38%	Easy
0066	Plus One	41%	Easy
0065	Valid Number	13%	Hard
0064	Minimum Path Sum	46%	Medium
0063	Unique Paths II	33%	Medium
0062	Unique Paths	47%	Medium
0061	Rotate List	26%	Medium
0060	Permutation Sequence	32%	Medium
0059	Spiral Matrix II	46%	Medium
0058	Length of Last Word	32%	Easy
0057	Insert Interval	31%	Hard
0056	Merge Intervals	35%	Medium
0055	Jump Game	31%	Medium
0054	Spiral Matrix	30%	Medium
0053	Maximum Subarray	43%	Easy
0052	N-Queens II	51%	Hard
0051	N-Queens	38%	Hard
0050	Pow(x, n)	27%	Medium
0049	Group Anagrams	45%	Medium
0048	Rotate Image	47%	Medium
0047	Permutations II	39%	Medium
0046	Permutations	54%	Medium
0045	Jump Game II	27%	Hard
0044	Wildcard Matching	22%	Hard
0043	Multiply Strings	30%	Medium
0042	Trapping Rain Water	42%	Hard
0041	First Missing Positive	28%	Hard
0040	Combination Sum II	40%	Medium
0039	Combination Sum	47%	Medium
0038	Count and Say	40%	Easy
0037	Sudoku Solver	36%	Hard
0036	Valid Sudoku	42%	Medium
0035	Search Insert Position	40%	Easy
0034	Find First and Last Position of Element in Sorted Array	33%	Medium
0033	Search in Rotated Sorted Array	32%	Medium
0032	Longest Valid Parentheses	25%	Hard
0031	Next Permutation	30%	Medium
0030	Substring with Concatenation of All Words	23%	Hard
0029	Divide Two Integers	16%	Medium
0028	Implement strStr()	31%	Easy
0027	Remove Element	44%	Easy
0026	Remove Duplicates from Sorted Array	40%	Easy
0025	Reverse Nodes in k-Group	35%	Hard
0024	Swap Nodes in Pairs	44%	Medium
0023	Merge k Sorted Lists	33%	Hard
0022	Generate Parentheses	54%	Medium
0021	Merge Two Sorted Lists	46%	Easy
0020	Valid Parentheses	36%	Easy
0019	Remove Nth Node From End of List	34%	Medium
0018	4Sum	30%	Medium
0017	Letter Combinations of a Phone Number	41%	Medium
0016	3Sum Closest	43%	Medium
0015	3Sum	23%	Medium
0014	Longest Common Prefix	33%	Easy
0013	Roman to Integer	52%	Easy
0012	Integer to Roman	50%	Medium
0011	Container With Most Water	43%	Medium
0010	Regular Expression Matching	25%	Hard
0009	Palindrome Number	42%	Easy
0008	String to Integer (atoi)	14%	Medium
0007	Reverse Integer	25%	Easy
0006	ZigZag Conversion	31%	Medium
0005	Longest Palindromic Substring	27%	Medium
0004	Median of Two Sorted Arrays	26%	Hard
0003	Longest Substring Without Repeating Characters	28%	Medium
0002	Add Two Numbers	30%	Medium
0001	Two Sum	43%	Easy

以下免费的算法题，暂时不能提交 Go 解答

• 116.Populating Next Right Pointers in Each Node
• 117.Populating Next Right Pointers in Each Node II
• 133.Clone Graph
• 138.Copy List with Random Pointer
• 151.Reverse Words in a String
• 278.First Bad Version
• 284.Peeking Iterator
• 297.Serialize and Deserialize Binary Tree
• 341.Flatten Nested List Iterator
• 374.Guess Number Higher or Lower
• 426.Convert Binary Search Tree to Sorted Doubly Linked List
• 427.Construct Quad Tree
• 429.N-ary Tree Level Order Traversal
• 430.Flatten a Multilevel Doubly Linked List
• 449.Serialize and Deserialize BST
• 535.Encode and Decode TinyURL
• 558.Quad Tree Intersection
• 559.Maximum Depth of N-ary Tree
• 589.N-ary Tree Preorder Traversal
• 590.N-ary Tree Postorder Traversal
• 690.Employee Importance
• 708.Insert into a Cyclic Sorted List

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。

• Heap
• Interval
• ListNode
• NestedInteger
• PriorityQueue
• Queue
• Stack
• TreeNode
• Master