liuyang1520 / LeetCode-in-Go

:mortar_board: Go Solution for LeetCode algorithm problems, 100% coverage, continually updating.

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	203	340	149	692
Total	212	357	156	725

题解

题号	题目	通过率	难度	收藏
948	* Bag of Tokens 🆕	37%	Medium
947	* Most Stones Removed with Same Row or Column 🆕	46%	Medium
946	* Validate Stack Sequences 🆕	55%	Medium
945	* Minimum Increment to Make Array Unique 🆕	39%	Medium
944	* Delete Columns to Make Sorted	72%	Easy
943	* Find the Shortest Superstring	28%	Hard
942	* DI String Match	67%	Easy
941	* Valid Mountain Array	34%	Easy
940	* Distinct Subsequences II	34%	Hard
939	* Minimum Area Rectangle	42%	Medium
938	* Range Sum of BST	82%	Medium
937	* Reorder Log Files	56%	Easy
936	* Stamping The Sequence	28%	Hard
935	* Knight Dialer	34%	Medium
934	* Shortest Bridge	41%	Medium
933	* Number of Recent Calls	64%	Easy
932	* Beautiful Array	46%	Medium
931	* Minimum Falling Path Sum	55%	Medium
930	* Binary Subarrays With Sum	34%	Medium
929	* Unique Email Addresses	79%	Easy
928	* Minimize Malware Spread II	37%	Hard
927	* Three Equal Parts	27%	Hard
926	* Flip String to Monotone Increasing	44%	Medium
925	* Long Pressed Name	44%	Easy
924	* Minimize Malware Spread	36%	Hard
923	* 3Sum With Multiplicity	28%	Medium
922	* Sort Array By Parity II	65%	Easy
921	* Minimum Add to Make Parentheses Valid	68%	Medium
920	* Number of Music Playlists	41%	Hard
919	* Complete Binary Tree Inserter	53%	Medium
918	* Maximum Sum Circular Subarray	26%	Medium
917	* Reverse Only Letters	56%	Easy
916	* Word Subsets	43%	Medium
915	Partition Array into Disjoint Intervals	40%	Medium	❤
914	X of a Kind in a Deck of Cards	33%	Easy
913	Cat and Mouse	23%	Hard	❤
911	Online Election	43%	Medium	❤
910	Smallest Range II	20%	Medium	❤
909	Snakes and Ladders	26%	Medium	❤
908	Smallest Range I	63%	Easy
907	Sum of Subarray Minimums	22%	Medium	❤
906	Super Palindromes	28%	Hard
905	Sort Array By Parity	71%	Easy
904	Fruit Into Baskets	40%	Medium	❤
903	Valid Permutations for DI Sequence	40%	Hard	❤
902	Numbers At Most N Given Digit Set	26%	Hard
901	Online Stock Span	44%	Medium	❤
900	RLE Iterator	45%	Medium
899	Orderly Queue	43%	Hard
898	Bitwise ORs of Subarrays	31%	Medium	❤
897	Increasing Order Search Tree	58%	Easy	❤
896	Monotonic Array	54%	Easy	❤
895	Maximum Frequency Stack	47%	Hard	❤
894	All Possible Full Binary Trees	66%	Medium
893	Groups of Special-Equivalent Strings	60%	Easy
892	Surface Area of 3D Shapes	54%	Easy
891	Sum of Subsequence Widths	26%	Hard
890	Find and Replace Pattern	69%	Medium
889	Construct Binary Tree from Preorder and Postorder Traversal	55%	Medium
888	Fair Candy Swap	53%	Easy
887	Super Egg Drop	23%	Hard
886	Possible Bipartition	39%	Medium
885	Spiral Matrix III	62%	Medium
884	Uncommon Words from Two Sentences	59%	Easy
883	Projection Area of 3D Shapes	64%	Easy
882	Reachable Nodes In Subdivided Graph	34%	Hard
881	Boats to Save People	40%	Medium
880	Decoded String at Index	22%	Medium
879	Profitable Schemes	33%	Hard	❤
878	Nth Magical Number	23%	Hard
877	Stone Game	58%	Medium
876	Middle of the Linked List	62%	Easy
875	Koko Eating Bananas	42%	Medium
874	Walking Robot Simulation	28%	Easy
873	Length of Longest Fibonacci Subsequence	42%	Medium
872	Leaf-Similar Trees	60%	Easy
871	Minimum Number of Refueling Stops	26%	Hard
870	Advantage Shuffle	40%	Medium
869	Reordered Power of 2	48%	Medium
868	Binary Gap	58%	Easy
867	Transpose Matrix	63%	Easy
866	Prime Palindrome	18%	Medium	❤
865	Smallest Subtree with all the Deepest Nodes	53%	Medium
864	Shortest Path to Get All Keys	33%	Hard	❤
863	All Nodes Distance K in Binary Tree	43%	Medium	❤
862	Shortest Subarray with Sum at Least K	20%	Hard	❤
861	Score After Flipping Matrix	67%	Medium
860	Lemonade Change	49%	Easy
859	Buddy Strings	26%	Easy
858	Mirror Reflection	50%	Medium
857	Minimum Cost to Hire K Workers	45%	Hard	❤
856	Score of Parentheses	53%	Medium
855	Exam Room	34%	Medium
854	K-Similar Strings	31%	Hard	❤
853	Car Fleet	35%	Medium
852	Peak Index in a Mountain Array	67%	Easy	❤
851	Loud and Rich	45%	Medium	❤
850	Rectangle Area II	42%	Hard	❤
849	Maximize Distance to Closest Person	39%	Easy	❤
848	Shifting Letters	37%	Medium
847	Shortest Path Visiting All Nodes	43%	Hard	❤
846	Hand of Straights	46%	Medium	❤
845	Longest Mountain in Array	32%	Medium
844	Backspace String Compare	43%	Easy
843	Guess the Word	39%	Hard	❤
842	Split Array into Fibonacci Sequence	34%	Medium
841	Keys and Rooms	57%	Medium
840	Magic Squares In Grid	34%	Easy
839	Similar String Groups	32%	Hard	❤
838	Push Dominoes	41%	Medium	❤
837	New 21 Game	26%	Medium	❤
836	Rectangle Overlap	44%	Easy
835	Image Overlap	48%	Medium
834	Sum of Distances in Tree	35%	Hard	❤
833	Find And Replace in String	42%	Medium
832	Flipping an Image	69%	Easy
831	Masking Personal Information	41%	Medium
830	Positions of Large Groups	46%	Easy
829	Consecutive Numbers Sum	29%	Hard	❤
828	Unique Letter String	36%	Hard	❤
827	Making A Large Island	40%	Hard	❤
826	Most Profit Assigning Work	33%	Medium	❤
825	Friends Of Appropriate Ages	33%	Medium
824	Goat Latin	55%	Easy
823	Binary Trees With Factors	30%	Medium
822	Card Flipping Game	38%	Medium
821	Shortest Distance to a Character	61%	Easy
820	Short Encoding of Words	44%	Medium	❤
819	Most Common Word	41%	Easy
818	Race Car	32%	Hard	❤
817	Linked List Components	52%	Medium
816	Ambiguous Coordinates	42%	Medium
815	Bus Routes	36%	Hard	❤
814	Binary Tree Pruning	68%	Medium
813	Largest Sum of Averages	42%	Medium	❤
812	Largest Triangle Area	53%	Easy
811	Subdomain Visit Count	61%	Easy
810	Chalkboard XOR Game	41%	Hard	❤
809	Expressive Words	39%	Medium
808	Soup Servings	34%	Medium
807	Max Increase to Keep City Skyline	80%	Medium
806	Number of Lines To Write String	61%	Easy
805	Split Array With Same Average	22%	Hard	❤
804	Unique Morse Code Words	71%	Easy
803	Bricks Falling When Hit	25%	Hard	❤
802	Find Eventual Safe States	41%	Medium	❤
801	Minimum Swaps To Make Sequences Increasing	32%	Medium	❤
799	Champagne Tower	31%	Medium	❤
798	Smallest Rotation with Highest Score	36%	Hard	❤
797	All Paths From Source to Target	67%	Medium
796	Rotate String	48%	Easy
795	Number of Subarrays with Bounded Maximum	41%	Medium	❤
794	Valid Tic-Tac-Toe State	27%	Medium
793	Preimage Size of Factorial Zeroes Function	39%	Hard	❤
792	Number of Matching Subsequences	39%	Medium	❤
791	Custom Sort String	59%	Medium
790	Domino and Tromino Tiling	34%	Medium	❤
789	Escape The Ghosts	53%	Medium
788	Rotated Digits	51%	Easy
787	Cheapest Flights Within K Stops	31%	Medium	❤
786	K-th Smallest Prime Fraction	35%	Hard	❤
785	Is Graph Bipartite?	40%	Medium	❤
784	Letter Case Permutation	53%	Easy	❤
783	Minimum Distance Between BST Nodes	48%	Easy
782	Transform to Chessboard	38%	Hard
781	Rabbits in Forest	49%	Medium
780	Reaching Points	25%	Hard
779	K-th Symbol in Grammar	37%	Medium
778	Swim in Rising Water	45%	Hard
777	Swap Adjacent in LR String	30%	Medium
775	Global and Local Inversions	36%	Medium
773	Sliding Puzzle	48%	Hard
771	Jewels and Stones	81%	Easy
770	Basic Calculator IV	42%	Hard	❤
769	Max Chunks To Make Sorted	49%	Medium
768	Max Chunks To Make Sorted II	44%	Hard
767	Reorganize String	40%	Medium
766	Toeplitz Matrix	60%	Easy
765	Couples Holding Hands	49%	Hard
764	Largest Plus Sign	41%	Medium
763	Partition Labels	66%	Medium
762	Prime Number of Set Bits in Binary Representation	56%	Easy
761	Special Binary String	47%	Hard
757	Set Intersection Size At Least Two	35%	Hard
756	Pyramid Transition Matrix	48%	Medium	❤
754	Reach a Number	30%	Easy	❤
753	Cracking the Safe	43%	Hard	❤
752	Open the Lock	42%	Medium	❤
749	Contain Virus	40%	Hard
748	Shortest Completing Word	52%	Easy
747	Largest Number At Least Twice of Others	39%	Easy
746	Min Cost Climbing Stairs	44%	Easy
745	Prefix and Suffix Search	28%	Hard
744	Find Smallest Letter Greater Than Target	42%	Easy
743	Network Delay Time	37%	Easy
741	Cherry Pickup	25%	Hard
740	Delete and Earn	44%	Medium	❤
739	Daily Temperatures	56%	Medium	❤
738	Monotone Increasing Digits	41%	Medium
736	Parse Lisp Expression	41%	Hard	❤
735	Asteroid Collision	37%	Medium
733	Flood Fill	48%	Easy
732	My Calendar III	51%	Hard
731	My Calendar II	41%	Medium	❤
730	Count Different Palindromic Subsequences	37%	Hard	❤
729	My Calendar I	45%	Medium
728	Self Dividing Numbers	67%	Easy
726	Number of Atoms	43%	Hard	❤
725	Split Linked List in Parts	47%	Medium
724	Find Pivot Index	39%	Easy
722	Remove Comments	29%	Medium	❤
721	Accounts Merge	37%	Medium	❤
720	Longest Word in Dictionary	42%	Easy
719	Find K-th Smallest Pair Distance	28%	Hard	❤
718	Maximum Length of Repeated Subarray	43%	Medium	❤
717	1-bit and 2-bit Characters	48%	Easy
715	Range Module	32%	Hard
714	Best Time to Buy and Sell Stock with Transaction Fee	48%	Medium	❤
713	Subarray Product Less Than K	34%	Medium	❤
712	Minimum ASCII Delete Sum for Two Strings	52%	Medium	❤
710	Random Pick with Blacklist	30%	Hard	❤
709	To Lower Case	74%	Easy
707	Design Linked List	19%	Easy	❤
706	Design HashMap	50%	Easy
705	Design HashSet	45%	Easy
704	Binary Search	41%	Easy
703	Kth Largest Element in a Stream	40%	Easy
701	Insert into a Binary Search Tree	69%	Medium
700	Search in a Binary Search Tree	63%	Easy
699	Falling Squares	38%	Hard
698	Partition to K Equal Sum Subsets	39%	Medium	❤
697	Degree of an Array	47%	Easy
696	Count Binary Substrings	51%	Easy
695	Max Area of Island	54%	Medium	❤
693	Binary Number with Alternating Bits	56%	Easy
692	Top K Frequent Words	43%	Medium
691	Stickers to Spell Word	36%	Hard	❤
689	Maximum Sum of 3 Non-Overlapping Subarrays	42%	Hard
688	Knight Probability in Chessboard	41%	Medium
687	Longest Univalue Path	32%	Easy
686	Repeated String Match	31%	Easy	❤
685	Redundant Connection II	29%	Hard	❤
684	Redundant Connection	48%	Medium
682	Baseball Game	59%	Easy
680	Valid Palindrome II	33%	Easy
679	24 Game	40%	Hard	❤
678	Valid Parenthesis String	30%	Medium	❤
677	Map Sum Pairs	50%	Medium	❤
676	Implement Magic Dictionary	49%	Medium
675	Cut Off Trees for Golf Event	28%	Hard	❤
674	Longest Continuous Increasing Subsequence	43%	Easy
673	Number of Longest Increasing Subsequence	32%	Medium	❤
672	Bulb Switcher II	49%	Medium
671	Second Minimum Node In a Binary Tree	42%	Easy
670	Maximum Swap	39%	Medium	❤
669	Trim a Binary Search Tree	59%	Easy
668	Kth Smallest Number in Multiplication Table	39%	Hard
667	Beautiful Arrangement II	50%	Medium
665	Non-decreasing Array	19%	Easy
664	Strange Printer	35%	Hard	❤
662	Maximum Width of Binary Tree	39%	Medium
661	Image Smoother	47%	Easy
659	Split Array into Consecutive Subsequences	38%	Medium	❤
658	Find K Closest Elements	35%	Medium	❤
657	Robot Return to Origin	69%	Easy
655	Print Binary Tree	49%	Medium
654	Maximum Binary Tree	71%	Medium	❤
653	Two Sum IV - Input is a BST	51%	Easy
652	Find Duplicate Subtrees	41%	Medium
650	2 Keys Keyboard	45%	Medium
649	Dota2 Senate	36%	Medium	❤
648	Replace Words	49%	Medium
647	Palindromic Substrings	54%	Medium	❤
646	Maximum Length of Pair Chain	47%	Medium
645	Set Mismatch	40%	Easy	❤
643	Maximum Average Subarray I	38%	Easy
641	Design Circular Deque	48%	Medium	❤
640	Solve the Equation	39%	Medium
639	Decode Ways II	24%	Hard
638	Shopping Offers	46%	Medium	❤
637	Average of Levels in Binary Tree	57%	Easy
636	Exclusive Time of Functions	46%	Medium	❤
633	Sum of Square Numbers	32%	Easy
632	Smallest Range	44%	Hard
630	Course Schedule III	30%	Hard	❤
629	K Inverse Pairs Array	28%	Hard
628	Maximum Product of Three Numbers	44%	Easy	❤
623	Add One Row to Tree	46%	Medium
622	Design Circular Queue	37%	Medium
621	Task Scheduler	43%	Medium	❤
617	Merge Two Binary Trees	68%	Easy
611	Valid Triangle Number	43%	Medium	❤
609	Find Duplicate File in System	53%	Medium
606	Construct String from Binary Tree	50%	Easy
605	Can Place Flowers	30%	Easy	❤
600	Non-negative Integers without Consecutive Ones	32%	Hard	❤
599	Minimum Index Sum of Two Lists	46%	Easy
598	Range Addition II	48%	Easy
594	Longest Harmonious Subsequence	42%	Easy
593	Valid Square	40%	Medium
592	Fraction Addition and Subtraction	46%	Medium
591	Tag Validator	31%	Hard	❤
587	Erect the Fence	33%	Hard	❤
583	Delete Operation for Two Strings	44%	Medium	❤
581	Shortest Unsorted Continuous Subarray	29%	Easy	❤
576	Out of Boundary Paths	30%	Medium	❤
575	Distribute Candies	58%	Easy
572	Subtree of Another Tree	40%	Easy	❤
567	Permutation in String	36%	Medium
566	Reshape the Matrix	58%	Easy
565	Array Nesting	50%	Medium
564	Find the Closest Palindrome	17%	Hard
563	Binary Tree Tilt	46%	Easy
561	Array Partition I	67%	Easy
560	Subarray Sum Equals K	40%	Medium	❤
557	Reverse Words in a String III	62%	Easy
556	Next Greater Element III	29%	Medium
554	Brick Wall	46%	Medium
553	Optimal Division	54%	Medium
552	Student Attendance Record II	31%	Hard	❤
551	Student Attendance Record I	45%	Easy
547	Friend Circles	51%	Medium	❤
546	Remove Boxes	36%	Hard	❤
543	Diameter of Binary Tree	45%	Easy
542	01 Matrix	33%	Medium	❤
541	Reverse String II	44%	Easy
540	Single Element in a Sorted Array	56%	Medium
539	Minimum Time Difference	46%	Medium
538	Convert BST to Greater Tree	49%	Easy
537	Complex Number Multiplication	64%	Medium
532	K-diff Pairs in an Array	28%	Easy
530	Minimum Absolute Difference in BST	48%	Easy	❤
529	Minesweeper	50%	Medium
528	Random Pick with Weight	41%	Medium
526	Beautiful Arrangement	53%	Medium	❤
525	Contiguous Array	42%	Medium	❤
524	Longest Word in Dictionary through Deleting	44%	Medium
523	Continuous Subarray Sum	23%	Medium	❤
522	Longest Uncommon Subsequence II	32%	Medium
521	Longest Uncommon Subsequence I	55%	Easy
520	Detect Capital	51%	Easy
519	Random Flip Matrix	32%	Medium
518	Coin Change 2	39%	Medium	❤
517	Super Washing Machines	36%	Hard	❤
516	Longest Palindromic Subsequence	44%	Medium	❤
515	Find Largest Value in Each Tree Row	56%	Medium
514	Freedom Trail	39%	Hard
513	Find Bottom Left Tree Value	57%	Medium
508	Most Frequent Subtree Sum	53%	Medium
507	Perfect Number	32%	Easy
506	Relative Ranks	47%	Easy
504	Base 7	44%	Easy
503	Next Greater Element II	49%	Medium	❤
502	IPO	36%	Hard
501	Find Mode in Binary Search Tree	38%	Easy	❤
500	Keyboard Row	60%	Easy
498	Diagonal Traverse	44%	Medium
497	Random Point in Non-overlapping Rectangles	33%	Medium
496	Next Greater Element I	57%	Easy
495	Teemo Attacking	51%	Medium
494	Target Sum	44%	Medium	❤
493	Reverse Pairs	21%	Hard
492	Construct the Rectangle	47%	Easy	❤
491	Increasing Subsequences	40%	Medium	❤
488	Zuma Game	36%	Hard	❤
486	Predict the Winner	46%	Medium
485	Max Consecutive Ones	53%	Easy
483	Smallest Good Base	33%	Hard	❤
482	License Key Formatting	39%	Easy
481	Magical String	45%	Medium
480	Sliding Window Median	30%	Hard	❤
479	Largest Palindrome Product	26%	Easy
478	Generate Random Point in a Circle	34%	Medium
477	Total Hamming Distance	48%	Medium	❤
476	Number Complement	61%	Easy
475	Heaters	30%	Easy
474	Ones and Zeroes	38%	Medium
473	Matchsticks to Square	35%	Medium	❤
472	Concatenated Words	32%	Hard
470	Implement Rand10() Using Rand7()	43%	Medium	❤
468	Validate IP Address	20%	Medium
467	Unique Substrings in Wraparound String	33%	Medium	❤
466	Count The Repetitions	27%	Hard	❤
464	Can I Win	26%	Medium	❤
463	Island Perimeter	59%	Easy
462	Minimum Moves to Equal Array Elements II	51%	Medium
461	Hamming Distance	69%	Easy
460	LFU Cache	26%	Hard
459	Repeated Substring Pattern	38%	Easy	❤
458	Poor Pigs	44%	Easy
457	Circular Array Loop	25%	Medium
456	132 Pattern	27%	Medium	❤
455	Assign Cookies	47%	Easy
454	4Sum II	48%	Medium
453	Minimum Moves to Equal Array Elements	48%	Easy
452	Minimum Number of Arrows to Burst Balloons	45%	Medium
451	Sort Characters By Frequency	53%	Medium
450	Delete Node in a BST	38%	Medium	❤
448	Find All Numbers Disappeared in an Array	51%	Easy
447	Number of Boomerangs	48%	Easy
446	Arithmetic Slices II - Subsequence	28%	Hard	❤
445	Add Two Numbers II	48%	Medium	❤
443	String Compression	35%	Easy	❤
442	Find All Duplicates in an Array	58%	Medium
441	Arranging Coins	36%	Easy
440	K-th Smallest in Lexicographical Order	25%	Hard	❤
438	Find All Anagrams in a String	35%	Easy
437	Path Sum III	40%	Easy	❤
436	Find Right Interval	41%	Medium
435	Non-overlapping Intervals	41%	Medium	❤
434	Number of Segments in a String	36%	Easy
433	Minimum Genetic Mutation	36%	Medium
432	All O`one Data Structure	28%	Hard	❤
424	Longest Repeating Character Replacement	43%	Medium	❤
423	Reconstruct Original Digits from English	44%	Medium
421	Maximum XOR of Two Numbers in an Array	49%	Medium	❤
420	Strong Password Checker	18%	Hard	❤
419	Battleships in a Board	64%	Medium
417	Pacific Atlantic Water Flow	35%	Medium
416	Partition Equal Subset Sum	39%	Medium	❤
415	Add Strings	42%	Easy
414	Third Maximum Number	28%	Easy
413	Arithmetic Slices	54%	Medium
412	Fizz Buzz	58%	Easy
410	Split Array Largest Sum	40%	Hard
409	Longest Palindrome	46%	Easy
407	Trapping Rain Water II	38%	Hard
406	Queue Reconstruction by Height	57%	Medium	❤
405	Convert a Number to Hexadecimal	41%	Easy
404	Sum of Left Leaves	48%	Easy
403	Frog Jump	34%	Hard	❤
402	Remove K Digits	25%	Medium	❤
401	Binary Watch	44%	Easy
400	Nth Digit	29%	Easy	❤
399	Evaluate Division	44%	Medium	❤
398	Random Pick Index	47%	Medium
397	Integer Replacement	30%	Medium	❤
396	Rotate Function	34%	Medium	❤
395	Longest Substring with At Least K Repeating Characters	36%	Medium
394	Decode String	42%	Medium
393	UTF-8 Validation	35%	Medium	❤
392	Is Subsequence	45%	Medium	❤
391	Perfect Rectangle	27%	Hard
390	Elimination Game	42%	Medium	❤
389	Find the Difference	52%	Easy
388	Longest Absolute File Path	38%	Medium
387	First Unique Character in a String	47%	Easy
385	Mini Parser	31%	Medium	❤
384	Shuffle an Array	48%	Medium	❤
383	Ransom Note	48%	Easy
382	Linked List Random Node	48%	Medium
381	Insert Delete GetRandom O(1) - Duplicates allowed	30%	Hard	❤
380	Insert Delete GetRandom O(1)	41%	Medium	❤
378	Kth Smallest Element in a Sorted Matrix	47%	Medium	❤
377	Combination Sum IV	43%	Medium
376	Wiggle Subsequence	36%	Medium	❤
375	Guess Number Higher or Lower II	36%	Medium
373	Find K Pairs with Smallest Sums	32%	Medium	❤
372	Super Pow	35%	Medium
371	Sum of Two Integers	51%	Easy	❤
368	Largest Divisible Subset	34%	Medium	❤
367	Valid Perfect Square	38%	Easy
365	Water and Jug Problem	28%	Medium	❤
363	Max Sum of Rectangle No Larger Than K	34%	Hard	❤
357	Count Numbers with Unique Digits	46%	Medium	❤
355	Design Twitter	26%	Medium	❤
354	Russian Doll Envelopes	33%	Hard	❤
352	Data Stream as Disjoint Intervals	42%	Hard
350	Intersection of Two Arrays II	45%	Easy	❤
349	Intersection of Two Arrays	51%	Easy
347	Top K Frequent Elements	51%	Medium
345	Reverse Vowels of a String	40%	Easy
344	Reverse String	61%	Easy
343	Integer Break	46%	Medium
342	Power of Four	39%	Easy
338	Counting Bits	63%	Medium
337	House Robber III	46%	Medium	❤
336	Palindrome Pairs	28%	Hard	❤
335	Self Crossing	26%	Hard
334	Increasing Triplet Subsequence	39%	Medium	❤
332	Reconstruct Itinerary	30%	Medium	❤
331	Verify Preorder Serialization of a Binary Tree	37%	Medium	❤
330	Patching Array	32%	Hard
329	Longest Increasing Path in a Matrix	38%	Hard	❤
328	Odd Even Linked List	47%	Medium	❤
327	Count of Range Sum	31%	Hard	❤
326	Power of Three	41%	Easy	❤
324	Wiggle Sort II	26%	Medium
322	Coin Change	27%	Medium	❤
321	Create Maximum Number	24%	Hard	❤
319	Bulb Switcher	43%	Medium	❤
318	Maximum Product of Word Lengths	47%	Medium	❤
316	Remove Duplicate Letters	31%	Hard	❤
315	Count of Smaller Numbers After Self	36%	Hard	❤
313	Super Ugly Number	39%	Medium	❤
312	Burst Balloons	45%	Hard	❤
310	Minimum Height Trees	29%	Medium
309	Best Time to Buy and Sell Stock with Cooldown	42%	Medium	❤
307	Range Sum Query - Mutable	25%	Medium
306	Additive Number	27%	Medium
304	Range Sum Query 2D - Immutable	29%	Medium
303	Range Sum Query - Immutable	35%	Easy
301	Remove Invalid Parentheses	37%	Hard	❤
300	Longest Increasing Subsequence	39%	Medium	❤
299	Bulls and Cows	37%	Medium
295	Find Median from Data Stream	32%	Hard	❤
292	Nim Game	55%	Easy	❤
290	Word Pattern	34%	Easy
289	Game of Life	41%	Medium	❤
287	Find the Duplicate Number	46%	Medium	❤
283	Move Zeroes	52%	Easy
282	Expression Add Operators	31%	Hard	❤
279	Perfect Squares	39%	Medium	❤
275	H-Index II	35%	Medium	❤
274	H-Index	34%	Medium
273	Integer to English Words	23%	Hard	❤
268	Missing Number	46%	Easy
264	Ugly Number II	34%	Medium	❤
263	Ugly Number	40%	Easy
260	Single Number III	55%	Medium	❤
258	Add Digits	52%	Easy
257	Binary Tree Paths	43%	Easy
242	Valid Anagram	49%	Easy
241	Different Ways to Add Parentheses	47%	Medium
240	Search a 2D Matrix II	39%	Medium	❤
239	Sliding Window Maximum	36%	Hard	❤
238	Product of Array Except Self	52%	Medium
234	Palindrome Linked List	34%	Easy
233	Number of Digit One	29%	Hard	❤
232	Implement Queue using Stacks	40%	Easy
231	Power of Two	41%	Easy
230	Kth Smallest Element in a BST	48%	Medium
229	Majority Element II	30%	Medium	❤
228	Summary Ranges	34%	Medium
227	Basic Calculator II	31%	Medium
226	Invert Binary Tree	55%	Easy
225	Implement Stack using Queues	36%	Easy
224	Basic Calculator	30%	Hard
223	Rectangle Area	35%	Medium
221	Maximal Square	31%	Medium	❤
220	Contains Duplicate III	19%	Medium	❤
219	Contains Duplicate II	33%	Easy
218	The Skyline Problem	30%	Hard	❤
217	Contains Duplicate	49%	Easy
216	Combination Sum III	49%	Medium
215	Kth Largest Element in an Array	44%	Medium	❤
214	Shortest Palindrome	26%	Hard	❤
213	House Robber II	34%	Medium
212	Word Search II	26%	Hard	❤
211	Add and Search Word - Data structure design	27%	Medium	❤
210	Course Schedule II	32%	Medium
209	Minimum Size Subarray Sum	33%	Medium
208	Implement Trie (Prefix Tree)	34%	Medium	❤
207	Course Schedule	35%	Medium	❤
206	Reverse Linked List	50%	Easy
205	Isomorphic Strings	35%	Easy	❤
204	Count Primes	27%	Easy	❤
203	Remove Linked List Elements	34%	Easy
202	Happy Number	43%	Easy
201	Bitwise AND of Numbers Range	35%	Medium	❤
200	Number of Islands	38%	Medium
199	Binary Tree Right Side View	45%	Medium
198	House Robber	40%	Easy	❤
189	Rotate Array	27%	Easy
188	Best Time to Buy and Sell Stock IV	25%	Hard	❤
187	Repeated DNA Sequences	34%	Medium
179	Largest Number	24%	Medium	❤
174	Dungeon Game	25%	Hard	❤
172	Factorial Trailing Zeroes	36%	Easy
171	Excel Sheet Column Number	50%	Easy
169	Majority Element	50%	Easy	❤
168	Excel Sheet Column Title	28%	Easy	❤
167	Two Sum II - Input array is sorted	48%	Easy
166	Fraction to Recurring Decimal	18%	Medium	❤
165	Compare Version Numbers	21%	Medium
164	Maximum Gap	31%	Hard
162	Find Peak Element	40%	Medium
155	Min Stack	34%	Easy
154	Find Minimum in Rotated Sorted Array II	38%	Hard
153	Find Minimum in Rotated Sorted Array	41%	Medium
152	Maximum Product Subarray	27%	Medium	❤
150	Evaluate Reverse Polish Notation	30%	Medium
149	Max Points on a Line	15%	Hard	❤
148	Sort List	32%	Medium	❤
147	Insertion Sort List	35%	Medium	❤
146	LRU Cache	22%	Hard	❤
145	Binary Tree Postorder Traversal	45%	Hard
144	Binary Tree Preorder Traversal	49%	Medium	❤
143	Reorder List	28%	Medium	❤
140	Word Break II	25%	Hard	❤
139	Word Break	33%	Medium	❤
137	Single Number II	44%	Medium
136	Single Number	57%	Easy
135	Candy	26%	Hard
134	Gas Station	31%	Medium	❤
132	Palindrome Partitioning II	26%	Hard	❤
131	Palindrome Partitioning	38%	Medium	❤
130	Surrounded Regions	21%	Medium	❤
129	Sum Root to Leaf Numbers	40%	Medium
128	Longest Consecutive Sequence	39%	Hard
127	Word Ladder	21%	Medium	❤
126	Word Ladder II	16%	Hard	❤
125	Valid Palindrome	29%	Easy
124	Binary Tree Maximum Path Sum	28%	Hard	❤
123	Best Time to Buy and Sell Stock III	32%	Hard
122	Best Time to Buy and Sell Stock II	49%	Easy
121	Best Time to Buy and Sell Stock	45%	Easy
120	Triangle	37%	Medium	❤
119	Pascal's Triangle II	40%	Easy
118	Pascal's Triangle	43%	Easy
115	Distinct Subsequences	33%	Hard	❤
114	Flatten Binary Tree to Linked List	39%	Medium	❤
113	Path Sum II	38%	Medium
112	Path Sum	36%	Easy
111	Minimum Depth of Binary Tree	34%	Easy
110	Balanced Binary Tree	39%	Easy
109	Convert Sorted List to Binary Search Tree	38%	Medium
108	Convert Sorted Array to Binary Search Tree	47%	Easy
107	Binary Tree Level Order Traversal II	44%	Easy
106	Construct Binary Tree from Inorder and Postorder Traversal	36%	Medium	❤
105	Construct Binary Tree from Preorder and Inorder Traversal	37%	Medium	❤
104	Maximum Depth of Binary Tree	57%	Easy
103	Binary Tree Zigzag Level Order Traversal	39%	Medium
102	Binary Tree Level Order Traversal	45%	Medium
101	Symmetric Tree	41%	Easy	❤
100	Same Tree	48%	Easy
99	Recover Binary Search Tree	32%	Hard	❤
98	Validate Binary Search Tree	24%	Medium	❤
97	Interleaving String	26%	Hard	❤
96	Unique Binary Search Trees	43%	Medium
95	Unique Binary Search Trees II	33%	Medium	❤
94	Binary Tree Inorder Traversal	53%	Medium
93	Restore IP Addresses	29%	Medium	❤
92	Reverse Linked List II	33%	Medium
91	Decode Ways	21%	Medium	❤
90	Subsets II	40%	Medium	❤
89	Gray Code	44%	Medium
88	Merge Sorted Array	33%	Easy
87	Scramble String	30%	Hard	❤
86	Partition List	35%	Medium
85	Maximal Rectangle	31%	Hard	❤
84	Largest Rectangle in Histogram	29%	Hard
83	Remove Duplicates from Sorted List	41%	Easy
82	Remove Duplicates from Sorted List II	31%	Medium
81	Search in Rotated Sorted Array II	32%	Medium
80	Remove Duplicates from Sorted Array II	38%	Medium
79	Word Search	29%	Medium
78	Subsets	49%	Medium
77	Combinations	44%	Medium
76	Minimum Window Substring	28%	Hard
75	Sort Colors	40%	Medium
74	Search a 2D Matrix	34%	Medium
73	Set Matrix Zeroes	38%	Medium
72	Edit Distance	35%	Hard
71	Simplify Path	27%	Medium
70	Climbing Stairs	42%	Easy
69	Sqrt(x)	29%	Easy
68	Text Justification	21%	Hard
67	Add Binary	36%	Easy
66	Plus One	40%	Easy
65	Valid Number	13%	Hard
64	Minimum Path Sum	43%	Medium
63	Unique Paths II	32%	Medium
62	Unique Paths	45%	Medium
61	Rotate List	25%	Medium
60	Permutation Sequence	31%	Medium
59	Spiral Matrix II	43%	Medium
58	Length of Last Word	32%	Easy
57	Insert Interval	30%	Hard
56	Merge Intervals	33%	Medium
55	Jump Game	30%	Medium
54	Spiral Matrix	28%	Medium
53	Maximum Subarray	41%	Easy
52	N-Queens II	49%	Hard
51	N-Queens	36%	Hard
50	Pow(x, n)	26%	Medium
49	Group Anagrams	42%	Medium
48	Rotate Image	45%	Medium
47	Permutations II	37%	Medium
46	Permutations	51%	Medium
45	Jump Game II	26%	Hard
44	Wildcard Matching	21%	Hard
43	Multiply Strings	29%	Medium
42	Trapping Rain Water	40%	Hard
41	First Missing Positive	27%	Hard
40	Combination Sum II	38%	Medium
39	Combination Sum	44%	Medium
38	Count and Say	38%	Easy
37	Sudoku Solver	34%	Hard
36	Valid Sudoku	40%	Medium
35	Search Insert Position	40%	Easy
34	Find First and Last Position of Element in Sorted Array	32%	Medium
33	Search in Rotated Sorted Array	32%	Medium
32	Longest Valid Parentheses	24%	Hard
31	Next Permutation	29%	Medium
30	Substring with Concatenation of All Words	22%	Hard
29	Divide Two Integers	15%	Medium
28	Implement strStr()	30%	Easy
27	Remove Element	42%	Easy
26	Remove Duplicates from Sorted Array	38%	Easy
25	Reverse Nodes in k-Group	34%	Hard
24	Swap Nodes in Pairs	41%	Medium
23	Merge k Sorted Lists	31%	Hard
22	Generate Parentheses	51%	Medium
21	Merge Two Sorted Lists	44%	Easy
20	Valid Parentheses	35%	Easy
19	Remove Nth Node From End of List	33%	Medium
18	4Sum	28%	Medium
17	Letter Combinations of a Phone Number	39%	Medium
16	3Sum Closest	33%	Medium
15	3Sum	22%	Medium
14	Longest Common Prefix	32%	Easy
13	Roman to Integer	50%	Easy
12	Integer to Roman	48%	Medium
11	Container With Most Water	40%	Medium
10	Regular Expression Matching	24%	Hard
9	Palindrome Number	39%	Easy
8	String to Integer (atoi)	14%	Medium
7	Reverse Integer	24%	Easy
6	ZigZag Conversion	29%	Medium
5	Longest Palindromic Substring	25%	Medium
4	Median of Two Sorted Arrays	24%	Hard
3	Longest Substring Without Repeating Characters	25%	Medium
2	Add Two Numbers	29%	Medium
1	Two Sum	39%	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
• 141.Linked List Cycle
• 142.Linked List Cycle II
• 151.Reverse Words in a String
• 160.Intersection of Two Linked Lists
• 173.Binary Search Tree Iterator
• 190.Reverse Bits
• 191.Number of 1 Bits
• 222.Count Complete Tree Nodes
• 235.Lowest Common Ancestor of a Binary Search Tree
• 236.Lowest Common Ancestor of a Binary Tree
• 237.Delete Node in a Linked List
• 278.First Bad Version
• 284.Peeking Iterator
• 297.Serialize and Deserialize Binary Tree
• 341.Flatten Nested List Iterator
• 374.Guess Number Higher or Lower
• 386.Lexicographical Numbers
• 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