/LeetCode-in-Go

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

Primary LanguageGoMIT LicenseMIT

LeetCode 的 Go 解答

LeetCode 排名 codecov Build Status

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 196 334 142 672
Total 199 339 147 685

题解

题号 题目 通过率 难度 收藏
907 * Sum of Subarray Minimums 🆕 15% Medium
906 * Super Palindromes 🆕 23% Hard
905 * Sort Array By Parity 🆕 77% Easy
904 * Fruit Into Baskets 🆕 34% Medium
903 * Valid Permutations for DI Sequence 37% Hard
902 * Numbers At Most N Given Digit Set 24% Hard
901 * Online Stock Span 39% Medium
900 * RLE Iterator 39% Medium
899 * Orderly Queue 42% Hard
898 * Bitwise ORs of Subarrays 28% Medium
897 * Increasing Order Search Tree 56% Easy
896 * Monotonic Array 55% Easy
895 * Maximum Frequency Stack 48% Hard
894 All Possible Full Binary Trees 64% Medium
893 Groups of Special-Equivalent Strings 60% Easy
892 Surface Area of 3D Shapes 54% Easy
891 Sum of Subsequence Widths 24% Hard
890 Find and Replace Pattern 69% Medium
889 Construct Binary Tree from Preorder and Postorder Traversal 54% Medium
888 Fair Candy Swap 54% Easy
887 Super Egg Drop 22% Hard
886 Possible Bipartition 38% Medium
885 Spiral Matrix III 62% Medium
884 Uncommon Words from Two Sentences 59% Easy
883 Projection Area of 3D Shapes 65% Easy
882 Reachable Nodes In Subdivided Graph 33% Hard
881 Boats to Save People 39% Medium
880 Decoded String at Index 22% Medium
879 Profitable Schemes 31% Hard ❤
878 Nth Magical Number 22% Hard
877 Stone Game 56% Medium
876 Middle of the Linked List 63% Easy
875 Koko Eating Bananas 41% Medium
874 Walking Robot Simulation 28% Easy
873 Length of Longest Fibonacci Subsequence 41% Medium
872 Leaf-Similar Trees 61% Easy
871 Minimum Number of Refueling Stops 25% Hard
870 Advantage Shuffle 39% Medium
869 Reordered Power of 2 47% Medium
868 Binary Gap 59% Easy
867 Transpose Matrix 64% Easy
866 Prime Palindrome 18% Medium ❤
865 Smallest Subtree with all the Deepest Nodes 51% Medium
864 Shortest Path to Get All Keys 32% Hard ❤
863 All Nodes Distance K in Binary Tree 41% Medium ❤
862 Shortest Subarray with Sum at Least K 18% Hard ❤
861 Score After Flipping Matrix 67% Medium
860 Lemonade Change 49% Easy
859 Buddy Strings 26% Easy
858 Mirror Reflection 49% Medium
857 Minimum Cost to Hire K Workers 40% Hard ❤
856 Score of Parentheses 53% Medium
855 Exam Room 30% Medium
854 K-Similar Strings 30% Hard ❤
853 Car Fleet 32% Medium
852 Peak Index in a Mountain Array 67% Easy ❤
851 Loud and Rich 44% Medium ❤
850 Rectangle Area II 42% Hard ❤
849 Maximize Distance to Closest Person 37% Easy ❤
848 Shifting Letters 36% Medium
847 Shortest Path Visiting All Nodes 42% Hard ❤
846 Hand of Straights 44% Medium ❤
845 Longest Mountain in Array 31% Medium
844 Backspace String Compare 43% Easy
843 Guess the Word 35% Hard ❤
842 Split Array into Fibonacci Sequence 33% Medium
841 Keys and Rooms 56% Medium
840 Magic Squares In Grid 34% Easy
839 Similar String Groups 33% Hard ❤
838 Push Dominoes 41% Medium ❤
837 New 21 Game 25% Medium ❤
836 Rectangle Overlap 43% Easy
835 Image Overlap 43% Medium
834 Sum of Distances in Tree 34% Hard ❤
833 Find And Replace in String 39% Medium
832 Flipping an Image 68% Easy
831 Masking Personal Information 42% Medium
830 Positions of Large Groups 46% Easy
829 Consecutive Numbers Sum 27% Medium ❤
828 Unique Letter String 34% Hard ❤
827 Making A Large Island 40% Hard ❤
826 Most Profit Assigning Work 33% Medium ❤
825 Friends Of Appropriate Ages 31% Medium
824 Goat Latin 54% Easy
823 Binary Trees With Factors 30% Medium
822 Card Flipping Game 37% Medium
821 Shortest Distance to a Character 60% Easy
820 Short Encoding of Words 43% Medium ❤
819 Most Common Word 46% Easy
818 Race Car 29% Hard ❤
817 Linked List Components 51% Medium
816 Ambiguous Coordinates 42% Medium
815 Bus Routes 34% Hard ❤
814 Binary Tree Pruning 68% Medium
813 Largest Sum of Averages 41% Medium ❤
812 Largest Triangle Area 53% Easy
811 Subdomain Visit Count 61% Easy
810 Chalkboard XOR Game 40% Hard ❤
809 Expressive Words 38% Medium
808 Soup Servings 34% Medium
807 Max Increase to Keep City Skyline 79% Medium
806 Number of Lines To Write String 61% Easy
805 Split Array With Same Average 21% Hard ❤
804 Unique Morse Code Words 71% Easy
803 Bricks Falling When Hit 23% Hard ❤
802 Find Eventual Safe States 40% Medium ❤
801 Minimum Swaps To Make Sequences Increasing 32% Medium ❤
799 Champagne Tower 30% Medium ❤
798 Smallest Rotation with Highest Score 35% Hard ❤
797 All Paths From Source to Target 67% Medium
796 Rotate String 49% 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 37% Medium ❤
791 Custom Sort String 59% Medium
790 Domino and Tromino Tiling 33% Medium ❤
789 Escape The Ghosts 52% Medium
788 Rotated Digits 50% Easy
787 Cheapest Flights Within K Stops 30% Medium ❤
786 K-th Smallest Prime Fraction 34% Hard ❤
785 Is Graph Bipartite? 39% Medium ❤
784 Letter Case Permutation 53% Easy ❤
783 Minimum Distance Between BST Nodes 48% Easy
782 Transform to Chessboard 37% Hard
781 Rabbits in Forest 49% Medium
780 Reaching Points 24% Hard
779 K-th Symbol in Grammar 37% Medium
778 Swim in Rising Water 44% Hard
777 Swap Adjacent in LR String 29% Medium
775 Global and Local Inversions 35% Medium
773 Sliding Puzzle 47% Hard
771 Jewels and Stones 81% Easy
770 Basic Calculator IV 44% Hard ❤
769 Max Chunks To Make Sorted 48% Medium
768 Max Chunks To Make Sorted II 43% Hard
767 Reorganize String 38% Medium
766 Toeplitz Matrix 59% Easy
765 Couples Holding Hands 48% Hard
764 Largest Plus Sign 41% Medium
763 Partition Labels 65% Medium
762 Prime Number of Set Bits in Binary Representation 56% Easy
761 Special Binary String 45% Hard
757 Set Intersection Size At Least Two 35% Hard
756 Pyramid Transition Matrix 47% Medium ❤
754 Reach a Number 29% Medium ❤
753 Cracking the Safe 41% Hard ❤
752 Open the Lock 41% Medium ❤
749 Contain Virus 40% Hard
748 Shortest Completing Word 52% Medium
747 Largest Number At Least Twice of Others 40% Easy
746 Min Cost Climbing Stairs 44% Easy
745 Prefix and Suffix Search 26% Hard
744 Find Smallest Letter Greater Than Target 42% Easy
743 Network Delay Time 37% Medium
741 Cherry Pickup 24% Hard
740 Delete and Earn 44% Medium ❤
739 Daily Temperatures 55% Medium ❤
738 Monotone Increasing Digits 41% Medium
736 Parse Lisp Expression 41% Hard ❤
735 Asteroid Collision 36% Medium
733 Flood Fill 47% Easy
732 My Calendar III 50% Hard
731 My Calendar II 39% Medium ❤
730 Count Different Palindromic Subsequences 36% Hard ❤
729 My Calendar I 43% 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 28% Medium ❤
721 Accounts Merge 35% Medium ❤
720 Longest Word in Dictionary 41% Easy
719 Find K-th Smallest Pair Distance 28% Hard ❤
718 Maximum Length of Repeated Subarray 42% Medium ❤
717 1-bit and 2-bit Characters 48% Easy
715 Range Module 31% Hard
714 Best Time to Buy and Sell Stock with Transaction Fee 47% Medium ❤
713 Subarray Product Less Than K 33% Medium ❤
712 Minimum ASCII Delete Sum for Two Strings 51% Medium ❤
710 Random Pick with Blacklist 29% Hard ❤
709 To Lower Case 74% Easy
707 Design Linked List 16% Easy ❤
706 Design HashMap 43% Easy
705 Design HashSet 36% Easy
704 Binary Search 34% Easy
703 Kth Largest Element in a Stream 34% Easy
701 Insert into a Binary Search Tree 61% Medium
700 Search in a Binary Search Tree 61% Easy
699 Falling Squares 37% Hard
698 Partition to K Equal Sum Subsets 38% Medium ❤
697 Degree of an Array 47% Easy
696 Count Binary Substrings 51% Easy
695 Max Area of Island 53% Easy ❤
693 Binary Number with Alternating Bits 56% Easy
692 Top K Frequent Words 42% Medium
691 Stickers to Spell Word 35% Hard ❤
689 Maximum Sum of 3 Non-Overlapping Subarrays 41% Hard
688 Knight Probability in Chessboard 40% Medium
687 Longest Univalue Path 32% Easy
686 Repeated String Match 31% Easy ❤
685 Redundant Connection II 28% Hard ❤
684 Redundant Connection 45% Medium
682 Baseball Game 58% Easy
680 Valid Palindrome II 32% Easy
679 24 Game 39% Hard ❤
678 Valid Parenthesis String 29% Medium ❤
677 Map Sum Pairs 50% Medium ❤
676 Implement Magic Dictionary 49% Medium
675 Cut Off Trees for Golf Event 27% Hard ❤
674 Longest Continuous Increasing Subsequence 42% 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 38% Medium ❤
669 Trim a Binary Search Tree 58% 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 34% Hard ❤
662 Maximum Width of Binary Tree 38% Medium
661 Image Smoother 47% Easy
659 Split Array into Consecutive Subsequences 37% Medium ❤
658 Find K Closest Elements 34% Medium ❤
657 Robot Return to Origin 69% Easy
655 Print Binary Tree 49% Medium
654 Maximum Binary Tree 70% Medium ❤
653 Two Sum IV - Input is a BST 50% Easy
652 Find Duplicate Subtrees 39% 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 39% Easy ❤
643 Maximum Average Subarray I 38% Easy
641 Design Circular Deque 49% Medium ❤
640 Solve the Equation 38% Medium
639 Decode Ways II 24% Hard
638 Shopping Offers 46% Medium ❤
637 Average of Levels in Binary Tree 56% Easy
636 Exclusive Time of Functions 45% Medium ❤
633 Sum of Square Numbers 32% Easy
632 Smallest Range 43% Hard
630 Course Schedule III 29% Hard ❤
629 K Inverse Pairs Array 27% Hard
628 Maximum Product of Three Numbers 44% Easy ❤
623 Add One Row to Tree 46% Medium
622 Design Circular Queue 36% Medium
621 Task Scheduler 42% Medium ❤
617 Merge Two Binary Trees 68% Easy
611 Valid Triangle Number 42% Medium ❤
609 Find Duplicate File in System 52% Medium
606 Construct String from Binary Tree 50% Easy
605 Can Place Flowers 30% Easy ❤
600 Non-negative Integers without Consecutive Ones 31% Hard ❤
599 Minimum Index Sum of Two Lists 46% Easy
598 Range Addition II 47% Easy
594 Longest Harmonious Subsequence 41% Easy
593 Valid Square 39% 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 57% 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 61% Easy
556 Next Greater Element III 29% Medium
554 Brick Wall 46% Medium
553 Optimal Division 55% Medium
552 Student Attendance Record II 31% Hard ❤
551 Student Attendance Record I 44% Easy
547 Friend Circles 49% 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 48% 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 52% Medium ❤
525 Contiguous Array 41% Medium ❤
524 Longest Word in Dictionary through Deleting 43% 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 37% Medium ❤
517 Super Washing Machines 36% Hard ❤
516 Longest Palindromic Subsequence 43% Medium ❤
515 Find Largest Value in Each Tree Row 56% Medium
514 Freedom Trail 39% Hard
513 Find Bottom Left Tree Value 56% Medium
508 Most Frequent Subtree Sum 52% Medium
507 Perfect Number 32% Easy
506 Relative Ranks 47% Easy
504 Base 7 43% Easy
503 Next Greater Element II 48% Medium ❤
502 IPO 36% Hard
501 Find Mode in Binary Search Tree 37% 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 56% Easy
495 Teemo Attacking 51% Medium
494 Target Sum 43% Medium ❤
493 Reverse Pairs 21% Hard
492 Construct the Rectangle 47% Easy ❤
491 Increasing Subsequences 39% Medium ❤
488 Zuma Game 36% Hard ❤
486 Predict the Winner 45% 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 32% Medium
477 Total Hamming Distance 47% Medium ❤
476 Number Complement 61% Easy
475 Heaters 29% Easy
474 Ones and Zeroes 38% Medium
473 Matchsticks to Square 35% Medium ❤
472 Concatenated Words 31% 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 25% Medium ❤
463 Island Perimeter 58% 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 43% Easy
457 Circular Array Loop 24% 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 44% Medium
451 Sort Characters By Frequency 52% Medium
450 Delete Node in a BST 37% Medium ❤
448 Find All Numbers Disappeared in an Array 51% Easy
447 Number of Boomerangs 47% Easy
446 Arithmetic Slices II - Subsequence 28% Hard ❤
445 Add Two Numbers II 47% 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 34% Easy
437 Path Sum III 40% Easy ❤
436 Find Right Interval 41% Medium
435 Non-overlapping Intervals 40% Medium ❤
434 Number of Segments in a String 36% Easy
433 Minimum Genetic Mutation 35% Medium
432 All O`one Data Structure 27% Hard ❤
424 Longest Repeating Character Replacement 42% 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 63% Medium
417 Pacific Atlantic Water Flow 35% Medium
416 Partition Equal Subset Sum 38% 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 37% Hard
406 Queue Reconstruction by Height 56% Medium ❤
405 Convert a Number to Hexadecimal 41% Easy
404 Sum of Left Leaves 48% Easy
403 Frog Jump 33% Hard ❤
402 Remove K Digits 25% Medium ❤
401 Binary Watch 44% Easy
400 Nth Digit 29% Easy ❤
399 Evaluate Division 43% Medium ❤
398 Random Pick Index 46% 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 34% Medium ❤
392 Is Subsequence 44% Medium ❤
391 Perfect Rectangle 27% Hard
390 Elimination Game 42% Medium ❤
389 Find the Difference 51% Easy
388 Longest Absolute File Path 37% Medium
387 First Unique Character in a String 47% Easy
385 Mini Parser 31% Medium ❤
384 Shuffle an Array 47% Medium ❤
383 Ransom Note 48% Easy
382 Linked List Random Node 47% Medium
381 Insert Delete GetRandom O(1) - Duplicates allowed 30% Hard ❤
380 Insert Delete GetRandom O(1) 40% Medium ❤
378 Kth Smallest Element in a Sorted Matrix 46% 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 31% Medium ❤
372 Super Pow 34% Medium
371 Sum of Two Integers 50% Easy ❤
368 Largest Divisible Subset 33% 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 32% Hard ❤
352 Data Stream as Disjoint Intervals 41% Hard
350 Intersection of Two Arrays II 44% Easy ❤
349 Intersection of Two Arrays 49% Easy
347 Top K Frequent Elements 50% Medium
345 Reverse Vowels of a String 39% Easy
344 Reverse String 61% Easy
343 Integer Break 46% Medium
342 Power of Four 39% Easy
338 Counting Bits 62% Medium
337 House Robber III 45% Medium ❤
336 Palindrome Pairs 27% 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 37% Hard ❤
328 Odd Even Linked List 46% Medium ❤
327 Count of Range Sum 31% Hard ❤
326 Power of Three 40% 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 46% Medium ❤
316 Remove Duplicate Letters 30% Hard ❤
315 Count of Smaller Numbers After Self 35% Hard ❤
313 Super Ugly Number 39% Medium ❤
312 Burst Balloons 44% Hard ❤
310 Minimum Height Trees 29% Medium
309 Best Time to Buy and Sell Stock with Cooldown 42% Medium ❤
307 Range Sum Query - Mutable 24% Medium
306 Additive Number 27% Medium
304 Range Sum Query 2D - Immutable 28% Medium
303 Range Sum Query - Immutable 34% Easy
301 Remove Invalid Parentheses 36% Hard ❤
300 Longest Increasing Subsequence 39% Medium ❤
299 Bulls and Cows 36% Medium
295 Find Median from Data Stream 31% Hard ❤
292 Nim Game 55% Easy ❤
290 Word Pattern 33% Easy
289 Game of Life 39% Medium ❤
287 Find the Duplicate Number 45% Medium ❤
283 Move Zeroes 52% Easy
282 Expression Add Operators 31% Hard ❤
279 Perfect Squares 38% 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 39% Easy
260 Single Number III 54% Medium ❤
258 Add Digits 52% Easy
257 Binary Tree Paths 42% Easy
242 Valid Anagram 48% Easy
241 Different Ways to Add Parentheses 47% Medium
240 Search a 2D Matrix II 39% Medium ❤
239 Sliding Window Maximum 35% Hard ❤
238 Product of Array Except Self 51% Medium
234 Palindrome Linked List 34% Easy
233 Number of Digit One 29% Hard ❤
232 Implement Queue using Stacks 39% Easy
231 Power of Two 41% Easy
230 Kth Smallest Element in a BST 47% Medium
229 Majority Element II 30% Medium ❤
228 Summary Ranges 33% Medium
227 Basic Calculator II 31% Medium
226 Invert Binary Tree 54% Easy
225 Implement Stack using Queues 35% Easy
224 Basic Calculator 29% Hard
223 Rectangle Area 34% Medium
221 Maximal Square 31% Medium ❤
220 Contains Duplicate III 18% Medium ❤
219 Contains Duplicate II 33% Easy
218 The Skyline Problem 29% Hard ❤
217 Contains Duplicate 48% Easy
216 Combination Sum III 48% Medium
215 Kth Largest Element in an Array 42% Medium ❤
214 Shortest Palindrome 25% Hard ❤
213 House Robber II 34% Medium
212 Word Search II 25% Hard ❤
211 Add and Search Word - Data structure design 26% Medium ❤
210 Course Schedule II 31% Medium
209 Minimum Size Subarray Sum 33% Medium
208 Implement Trie (Prefix Tree) 33% Medium ❤
207 Course Schedule 34% Medium ❤
206 Reverse Linked List 49% Easy
205 Isomorphic Strings 35% Easy ❤
204 Count Primes 27% Easy ❤
203 Remove Linked List Elements 34% Easy
202 Happy Number 42% Easy
201 Bitwise AND of Numbers Range 34% Medium ❤
200 Number of Islands 37% Medium
199 Binary Tree Right Side View 44% Medium
198 House Robber 40% Easy ❤
189 Rotate Array 26% Easy
188 Best Time to Buy and Sell Stock IV 25% Hard ❤
187 Repeated DNA Sequences 33% Medium
179 Largest Number 24% Medium ❤
174 Dungeon Game 25% Hard ❤
172 Factorial Trailing Zeroes 37% Easy
171 Excel Sheet Column Number 49% Easy
169 Majority Element 49% Easy ❤
168 Excel Sheet Column Title 27% Easy ❤
167 Two Sum II - Input array is sorted 47% Easy
166 Fraction to Recurring Decimal 18% Medium ❤
165 Compare Version Numbers 21% Medium
164 Maximum Gap 30% Hard
162 Find Peak Element 39% Medium
155 Min Stack 33% 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 29% Medium
149 Max Points on a Line 15% Hard ❤
148 Sort List 31% Medium ❤
147 Insertion Sort List 34% Medium ❤
146 LRU Cache 21% Hard ❤
145 Binary Tree Postorder Traversal 44% Hard
144 Binary Tree Preorder Traversal 48% Medium ❤
143 Reorder List 27% Medium ❤
140 Word Break II 25% Hard ❤
139 Word Break 32% Medium ❤
137 Single Number II 43% Medium ❤
136 Single Number 56% Easy
135 Candy 26% Hard
134 Gas Station 31% Medium ❤
132 Palindrome Partitioning II 25% Hard ❤
131 Palindrome Partitioning 37% Medium ❤
130 Surrounded Regions 20% Medium ❤
129 Sum Root to Leaf Numbers 39% Medium
128 Longest Consecutive Sequence 39% Hard
127 Word Ladder 21% Medium ❤
126 Word Ladder II 15% Hard ❤
125 Valid Palindrome 28% Easy
124 Binary Tree Maximum Path Sum 27% Hard ❤
123 Best Time to Buy and Sell Stock III 31% Hard
122 Best Time to Buy and Sell Stock II 49% Easy
121 Best Time to Buy and Sell Stock 44% Easy
120 Triangle 36% Medium ❤
119 Pascal's Triangle II 39% Easy
118 Pascal's Triangle 41% Easy
115 Distinct Subsequences 33% Hard ❤
114 Flatten Binary Tree to Linked List 38% Medium ❤
113 Path Sum II 37% Medium
112 Path Sum 35% Easy
111 Minimum Depth of Binary Tree 34% Easy
110 Balanced Binary Tree 39% Easy
109 Convert Sorted List to Binary Search Tree 37% Medium
108 Convert Sorted Array to Binary Search Tree 46% Easy
107 Binary Tree Level Order Traversal II 43% Easy
106 Construct Binary Tree from Inorder and Postorder Traversal 35% Medium ❤
105 Construct Binary Tree from Preorder and Inorder Traversal 36% Medium ❤
104 Maximum Depth of Binary Tree 56% Easy
103 Binary Tree Zigzag Level Order Traversal 38% Medium
102 Binary Tree Level Order Traversal 44% 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 52% Medium
93 Restore IP Addresses 29% Medium ❤
92 Reverse Linked List II 32% Medium
91 Decode Ways 20% Medium ❤
90 Subsets II 39% Medium ❤
89 Gray Code 43% Medium
88 Merge Sorted Array 33% Easy
87 Scramble String 30% Hard ❤
86 Partition List 34% Medium
85 Maximal Rectangle 30% Hard ❤
84 Largest Rectangle in Histogram 28% Hard ❤
83 Remove Duplicates from Sorted List 40% Easy
82 Remove Duplicates from Sorted List II 30% Medium ❤
81 Search in Rotated Sorted Array II 32% Medium
80 Remove Duplicates from Sorted Array II 38% Medium ❤
79 Word Search 28% Medium
78 Subsets 47% Medium ❤
77 Combinations 43% Medium
76 Minimum Window Substring 28% Hard ❤
75 Sort Colors 39% Medium ❤
74 Search a 2D Matrix 34% Medium
73 Set Matrix Zeroes 37% Medium ❤
72 Edit Distance 34% Hard ❤
71 Simplify Path 26% Medium
70 Climbing Stairs 42% Easy
69 Sqrt(x) 29% Easy
68 Text Justification 20% Hard
67 Add Binary 35% Easy
66 Plus One 40% Easy
65 Valid Number 13% Hard
64 Minimum Path Sum 42% Medium
63 Unique Paths II 32% Medium
62 Unique Paths 44% Medium ❤
61 Rotate List 25% Medium ❤
60 Permutation Sequence 30% Medium
59 Spiral Matrix II 42% Medium ❤
58 Length of Last Word 32% Easy
57 Insert Interval 29% Hard
56 Merge Intervals 32% Medium ❤
55 Jump Game 30% Medium
54 Spiral Matrix 28% Medium ❤
53 Maximum Subarray 41% Easy ❤
52 N-Queens II 48% Hard
51 N-Queens 35% Hard
50 Pow(x, n) 26% Medium
49 Group Anagrams 41% Medium ❤
48 Rotate Image 43% Medium
47 Permutations II 36% Medium
46 Permutations 49% Medium
45 Jump Game II 26% Hard
44 Wildcard Matching 21% Hard ❤
43 Multiply Strings 28% Medium
42 Trapping Rain Water 39% Hard
41 First Missing Positive 26% Hard
40 Combination Sum II 37% Medium
39 Combination Sum 43% Medium
38 Count and Say 37% Easy
37 Sudoku Solver 33% Hard ❤
36 Valid Sudoku 39% 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 23% Hard
31 Next Permutation 29% Medium
30 Substring with Concatenation of All Words 22% Hard
29 Divide Two Integers 15% Medium
28 Implement strStr() 29% Easy
27 Remove Element 41% Easy
26 Remove Duplicates from Sorted Array 37% Easy
25 Reverse Nodes in k-Group 33% Hard ❤
24 Swap Nodes in Pairs 40% Medium
23 Merge k Sorted Lists 30% Hard
22 Generate Parentheses 50% Medium
21 Merge Two Sorted Lists 43% Easy
20 Valid Parentheses 34% Easy
19 Remove Nth Node From End of List 33% Medium
18 4Sum 28% Medium
17 Letter Combinations of a Phone Number 38% Medium
16 3Sum Closest 32% Medium
15 3Sum 22% Medium
14 Longest Common Prefix 31% Easy
13 Roman to Integer 49% Easy
12 Integer to Roman 47% Medium
11 Container With Most Water 38% Medium
10 Regular Expression Matching 24% Hard
9 Palindrome Number 38% Easy
8 String to Integer (atoi) 14% Medium
7 Reverse Integer 24% Easy
6 ZigZag Conversion 28% Medium
5 Longest Palindromic Substring 25% Medium
4 Median of Two Sorted Arrays 23% Hard
3 Longest Substring Without Repeating Characters 25% Medium
2 Add Two Numbers 29% Medium
1 Two Sum 38% 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。