LeetCode-JS

最近更新

• 885. Spiral Matrix III
• 889. Construct Binary Tree from Preorder and Postorder Traversal
• 890. Find and Replace Pattern
• 894. All Possible Full Binary Trees
• 912. Sort an Array
• 20. Valid Parentheses
• 921. Minimum Add to Make Parentheses Valid

完成列表(444)

#	Title	difficulty
1	Two Sum	Easy
2	Add Two Numbers	Medium
3	Longest Substring Without Repeating Characters	Medium
4	Median of Two Sorted Arrays	Hard
5	Longest Palindromic Substring	Medium
6	ZigZag Conversion	Medium
7	Reverse Integer	Easy
8	String to Integer (atoi)	Medium
9	Palindrome Number	Easy
10	Regular Expression Matching	Hard
11	Container With Most Water	Medium
12	Integer to Roman	Medium
13	Roman to Integer	Easy
14	Longest Common Prefix	Easy
15	3Sum	Medium
16	3Sum Closest	Medium
17	Letter Combinations of a Phone Number	Medium
19	Remove Nth Node From End of List	Medium
20	Valid Parentheses	Easy
21	Merge Two Sorted Lists	Easy
22	Generate Parentheses	Medium
23	Merge k Sorted Lists	Hard
24	Swap Nodes in Pairs	Medium
25	Reverse Nodes in k-Group	Hard
26	Remove Duplicates from Sorted Array	Easy
27	Remove Element	Easy
28	Implement strStr()	Easy
31	Next Permutation	Medium
32	Longest Valid Parentheses	Hard
33	Search in Rotated Sorted Array	Medium
34	Find First and Last Position of Element in Sorted Array	Medium
35	Search Insert Position	Easy
36	Valid Sudoku	Medium
37	Sudoku Solver	Hard
38	Count and Say	Easy
39	Combination Sum	Medium
40	Combination Sum II	Medium
41	First Missing Positive	Hard
42	Trapping Rain Water	Hard
43	Multiply Strings	Medium
45	Jump Game II	Hard
46	Permutations	Medium
47	Permutations II	Medium
48	Rotate Image	Medium
49	Group Anagrams	Medium
50	Pow(x, n)	Medium
51	N-Queens	Hard
52	N-Queens II	Hard
53	Maximum Subarray	Easy
54	Spiral Matrix	Medium
55	Jump Game	Medium
56	Merge Intervals	Medium
57	Insert Interval	Hard
58	Length of Last Word	Easy
59	Spiral Matrix II	Medium
60	Permutation Sequence	Medium
61	Rotate List	Medium
62	Unique Paths	Medium
63	Unique Paths II	Medium
64	Minimum Path Sum	Medium
66	Plus One	Easy
67	Add Binary	Easy
68	Text Justification	Hard
69	Sqrt(x)	Easy
70	Climbing Stairs	Easy
71	Simplify Path	Medium
73	Set Matrix Zeroes	Medium
75	Sort Colors	Medium
77	Combinations	Medium
78	Subsets	Medium
79	Word Search	Medium
82	Remove Duplicates from Sorted List II	Medium
83	Remove Duplicates from Sorted List	Easy
86	Partition List	Medium
88	Merge Sorted Array	Easy
89	Gray Code	Medium
90	Subsets II	Medium
92	Reverse Linked List II	Medium
94	Binary Tree Inorder Traversal	Medium
96	Unique Binary Search Trees	Medium
100	Same Tree	Easy
101	Symmetric Tree	Easy
102	Binary Tree Level Order Traversal	Medium
103	Binary Tree Zigzag Level Order Traversal	Medium
104	Maximum Depth of Binary Tree	Easy
105	Construct Binary Tree from Preorder and Inorder Traversal	Medium
106	Construct Binary Tree from Inorder and Postorder Traversal	Medium
107	Binary Tree Level Order Traversal II	Easy
108	Convert Sorted Array to Binary Search Tree	Easy
109	Convert Sorted List to Binary Search Tree	Medium
110	Balanced Binary Tree	Easy
111	Minimum Depth of Binary Tree	Easy
112	Path Sum	Easy
113	Path Sum II	Medium
114	Flatten Binary Tree to Linked List	Medium
115	Distinct Subsequences	Hard
116	Populating Next Right Pointers in Each Node	Medium
117	Populating Next Right Pointers in Each Node II	Medium
118	Pascal's Triangle	Easy
119	Pascal's Triangle II	Easy
120	Triangle	Medium
121	Best Time to Buy and Sell Stock	Easy
122	Best Time to Buy and Sell Stock II	Easy
136	Single Number	Easy
141	Linked List Cycle	Easy
143	Reorder List	Medium
147	Insertion Sort List	Medium
155	Min Stack	Easy
160	Intersection of Two Linked Lists	Easy
162	Find Peak Element	Medium
167	Two Sum II - Input array is sorted	Easy
168	Excel Sheet Column Title	Easy
169	Majority Element	Easy
171	Excel Sheet Column Number	Easy
172	Factorial Trailing Zeroes	Easy
189	Rotate Array	Easy
190	Reverse Bits	Easy
191	Number of 1 Bits	Easy
198	House Robber	Easy
202	Happy Number	Easy
203	Remove Linked List Elements	Easy
204	Count Primes	Easy
205	Isomorphic Strings	Easy
206	Reverse Linked List	Easy
217	Contains Duplicate	Easy
219	Contains Duplicate II	Easy
225	Implement Stack using Queues	Easy
226	Invert Binary Tree	Easy
230	Kth Smallest Element in a BST	Medium
231	Power of Two	Easy
232	Implement Queue using Stacks	Easy
234	Palindrome Linked List	Easy
235	Lowest Common Ancestor of a Binary Search Tree	Easy
237	Delete Node in a Linked List	Easy
238	Product of Array Except Self	Medium
242	Valid Anagram	Easy
257	Binary Tree Paths	Easy
258	Add Digits	Easy
260	Single Number III	Medium
263	Ugly Number	Easy
268	Missing Number	Easy
274	H-Index	Medium
278	First Bad Version	Easy
283	Move Zeroes	Easy
290	Word Pattern	Easy
292	Nim Game	Easy
299	Bulls and Cows	Easy
303	Range Sum Query - Immutable	Easy
326	Power of Three	Easy
338	Counting Bits	Medium
342	Power of Four	Easy
344	Reverse String	Easy
345	Reverse Vowels of a String	Easy
347	Top K Frequent Elements	Medium
349	Intersection of Two Arrays	Easy
350	Intersection of Two Arrays II	Easy
367	Valid Perfect Square	Easy
371	Sum of Two Integers	Easy
374	Guess Number Higher or Lower	Easy
383	Ransom Note	Easy
387	First Unique Character in a String	Easy
389	Find the Difference	Easy
392	Is Subsequence	Easy
398	Random Pick Index	Medium
400	Nth Digit	Medium
401	Binary Watch	Easy
404	Sum of Left Leaves	Easy
405	Convert a Number to Hexadecimal	Easy
406	Queue Reconstruction by Height	Medium
409	Longest Palindrome	Easy
412	Fizz Buzz	Easy
413	Arithmetic Slices	Medium
414	Third Maximum Number	Easy
415	Add Strings	Easy
419	Battleships in a Board	Medium
434	Number of Segments in a String	Easy
437	Path Sum III	Easy
438	Find All Anagrams in a String	Medium
441	Arranging Coins	Easy
442	Find All Duplicates in an Array	Medium
443	String Compression	Easy
447	Number of Boomerangs	Easy
448	Find All Numbers Disappeared in an Array	Easy
451	Sort Characters By Frequency	Medium
453	Minimum Moves to Equal Array Elements	Easy
455	Assign Cookies	Easy
458	Poor Pigs	Hard
459	Repeated Substring Pattern	Easy
462	Minimum Moves to Equal Array Elements II	Medium
463	Island Perimeter	Easy
467	Unique Substrings in Wraparound String	Medium
475	Heaters	Easy
476	Number Complement	Easy
479	Largest Palindrome Product	Hard
481	Magical String	Medium
482	License Key Formatting	Easy
485	Max Consecutive Ones	Easy
492	Construct the Rectangle	Easy
495	Teemo Attacking	Medium
496	Next Greater Element I	Easy
500	Keyboard Row	Easy
501	Find Mode in Binary Search Tree	Easy
504	Base 7	Easy
506	Relative Ranks	Easy
507	Perfect Number	Easy
508	Most Frequent Subtree Sum	Medium
513	Find Bottom Left Tree Value	Medium
515	Find Largest Value in Each Tree Row	Medium
520	Detect Capital	Easy
521	Longest Uncommon Subsequence I	Easy
526	Beautiful Arrangement	Medium
529	Minesweeper	Medium
530	Minimum Absolute Difference in BST	Easy
532	K-diff Pairs in an Array	Easy
535	Encode and Decode TinyURL	Medium
537	Complex Number Multiplication	Medium
538	Convert BST to Greater Tree	Easy
540	Single Element in a Sorted Array	Medium
541	Reverse String II	Easy
543	Diameter of Binary Tree	Easy
547	Friend Circles	Medium
551	Student Attendance Record I	Easy
553	Optimal Division	Medium
557	Reverse Words in a String III	Easy
561	Array Partition I	Easy
563	Binary Tree Tilt	Easy
566	Reshape the Matrix	Easy
567	Permutation in String	Medium
572	Subtree of Another Tree	Easy
575	Distribute Candies	Easy
581	Shortest Unsorted Continuous Subarray	Easy
594	Longest Harmonious Subsequence	Easy
599	Minimum Index Sum of Two Lists	Easy
605	Can Place Flowers	Easy
606	Construct String from Binary Tree	Easy
609	Find Duplicate File in System	Medium
617	Merge Two Binary Trees	Easy
628	Maximum Product of Three Numbers	Easy
633	Sum of Square Numbers	Easy
637	Average of Levels in Binary Tree	Easy
643	Maximum Average Subarray I	Easy
645	Set Mismatch	Easy
647	Palindromic Substrings	Medium
653	Two Sum IV - Input is a BST	Easy
654	Maximum Binary Tree	Medium
655	Print Binary Tree	Medium
657	Robot Return to Origin	Easy
661	Image Smoother	Easy
665	Non-decreasing Array	Easy
667	Beautiful Arrangement II	Medium
669	Trim a Binary Search Tree	Easy
671	Second Minimum Node In a Binary Tree	Easy
674	Longest Continuous Increasing Subsequence	Easy
677	Map Sum Pairs	Medium
680	Valid Palindrome II	Easy
682	Baseball Game	Easy
686	Repeated String Match	Easy
687	Longest Univalue Path	Easy
690	Employee Importance	Easy
693	Binary Number with Alternating Bits	Easy
695	Max Area of Island	Medium
696	Count Binary Substrings	Easy
697	Degree of an Array	Easy
713	Subarray Product Less Than K	Medium
717	1-bit and 2-bit Characters	Easy
720	Longest Word in Dictionary	Easy
724	Find Pivot Index	Easy
725	Split Linked List in Parts	Medium
728	Self Dividing Numbers	Easy
732	My Calendar III	Hard
733	Flood Fill	Easy
739	Daily Temperatures	Medium
709	To Lower Case	Easy
744	Find Smallest Letter Greater Than Target	Easy
746	Min Cost Climbing Stairs	Easy
747	Largest Number At Least Twice of Others	Easy
748	Shortest Completing Word	Easy
762	Prime Number of Set Bits in Binary Representation	Easy
559	Maximum Depth of N-ary Tree	Easy
589	N-ary Tree Preorder Traversal	Easy
590	N-ary Tree Postorder Traversal	Easy
766	Toeplitz Matrix	Easy
771	Jewels and Stones	Easy
700	Search in a Binary Search Tree	Easy
703	Kth Largest Element in a Stream	Easy
704	Binary Search	Easy
783	Minimum Distance Between BST Nodes	Easy
784	Letter Case Permutation	Easy
788	Rotated Digits	Easy
796	Rotate String	Easy
705	Design HashSet	Easy
706	Design HashMap	Easy
804	Unique Morse Code Words	Easy
806	Number of Lines To Write String	Easy
811	Subdomain Visit Count	Easy
819	Most Common Word	Easy
821	Shortest Distance to a Character	Easy
824	Goat Latin	Easy
830	Positions of Large Groups	Easy
832	Flipping an Image	Easy
833	Find And Replace in String	Medium
836	Rectangle Overlap	Easy
840	Magic Squares In Grid	Easy
844	Backspace String Compare	Easy
849	Maximize Distance to Closest Person	Easy
852	Peak Index in a Mountain Array	Easy
859	Buddy Strings	Easy
860	Lemonade Change	Easy
863	All Nodes Distance K in Binary Tree	Medium
867	Transpose Matrix	Easy
868	Binary Gap	Easy
872	Leaf-Similar Trees	Easy
874	Walking Robot Simulation	Easy
876	Middle of the Linked List	Easy
883	Projection Area of 3D Shapes	Easy
884	Uncommon Words from Two Sentences	Easy
885	Spiral Matrix III	Medium
888	Fair Candy Swap	Easy
889	Construct Binary Tree from Preorder and Postorder Traversal	Medium
890	Find and Replace Pattern	Medium
892	Surface Area of 3D Shapes	Easy
893	Groups of Special-Equivalent Strings	Easy
894	All Possible Full Binary Trees	Medium
896	Monotonic Array	Easy
897	Increasing Order Search Tree	Easy
905	Sort Array By Parity	Easy
908	Smallest Range I	Easy
912	Sort an Array	Medium
914	X of a Kind in a Deck of Cards	Easy
921	Minimum Add to Make Parentheses Valid	Medium
922	Sort Array By Parity II	Easy
925	Long Pressed Name	Easy
929	Unique Email Addresses	Easy
931	Minimum Falling Path Sum	Medium
933	Number of Recent Calls	Easy
937	Reorder Data in Log Files	Easy
938	Range Sum of BST	Easy
941	Valid Mountain Array	Easy
942	DI String Match	Easy
944	Delete Columns to Make Sorted	Easy
946	Validate Stack Sequences	Medium
949	Largest Time for Given Digits	Easy
950	Reveal Cards In Increasing Order	Medium
951	Flip Equivalent Binary Trees	Medium
953	Verifying an Alien Dictionary	Easy
959	Regions Cut By Slashes	Medium
965	Univalued Binary Tree	Easy
969	Pancake Sorting	Medium
970	Powerful Integers	Easy
509	Fibonacci Number	Easy
976	Largest Perimeter Triangle	Easy
977	Squares of a Sorted Array	Easy
979	Distribute Coins in Binary Tree	Medium
985	Sum of Even Numbers After Queries	Easy
986	Interval List Intersections	Medium
989	Add to Array-Form of Integer	Easy
993	Cousins in Binary Tree	Easy
994	Rotting Oranges	Medium
997	Find the Town Judge	Easy
998	Maximum Binary Tree II	Medium
999	Available Captures for Rook	Easy
1002	Find Common Characters	Easy
1005	Maximize Sum Of Array After K Negations	Easy
1009	Complement of Base 10 Integer	Easy
1010	Pairs of Songs With Total Durations Divisible by 60	Easy
1013	Partition Array Into Three Parts With Equal Sum	Easy
1018	Binary Prefix Divisible By 5	Easy
1022	Sum of Root To Leaf Binary Numbers	Easy
1025	Divisor Game	Easy
1030	Matrix Cells in Distance Order	Easy
1029	Two City Scheduling	Easy
1033	Moving Stones Until Consecutive	Easy
1160	Find Words That Can Be Formed by Characters	Easy
1037	Valid Boomerang	Easy
1042	Flower Planting With No Adjacent	Easy
1046	Last Stone Weight	Easy
1047	Remove All Adjacent Duplicates In String	Easy
1051	Height Checker	Easy
1071	Greatest Common Divisor of Strings	Easy
1078	Occurrences After Bigram	Easy
1089	Duplicate Zeros	Easy
1103	Distribute Candies to People	Easy
1108	Defanging an IP Address	Easy
1122	Relative Sort Array	Easy
1287	Element Appearing More Than 25% In Sorted Array	Easy
1128	Number of Equivalent Domino Pairs	Easy
1299	Replace Elements with Greatest Element on Right Side	Easy
1137	N-th Tribonacci Number	Easy
1313	Decompress Run-Length Encoded List	Easy
1331	Rank Transform of an Array	Easy
1154	Day of the Year	Easy
1171	Remove Zero Sum Consecutive Nodes from Linked List	Medium
1170	Compare Strings by Frequency of the Smallest Character	Easy
1360	Number of Days Between Two Dates	Easy
1175	Prime Arrangements	Easy
1184	Distance Between Bus Stops	Easy
1185	Day of the Week	Easy
1189	Maximum Number of Balloons	Easy
1200	Minimum Absolute Difference	Easy
1207	Unique Number of Occurrences	Easy
1217	Play with Chips	Easy
1221	Split a String in Balanced Strings	Easy
1232	Check If It Is a Straight Line	Easy
1237	Find Positive Integer Solution for a Given Equation	Easy
1252	Cells with Odd Values in a Matrix	Easy
1260	Shift 2D Grid	Easy
1266	Minimum Time Visiting All Points	Easy
1275	Find Winner on a Tic Tac Toe Game	Easy
1281	Subtract the Product and Sum of Digits of an Integer	Easy
1290	Convert Binary Number in a Linked List to Integer	Easy
1295	Find Numbers with Even Number of Digits	Easy
1304	Find N Unique Integers Sum up to Zero	Easy
1309	Decrypt String from Alphabet to Integer Mapping	Easy
1317	Convert Integer to the Sum of Two No-Zero Integers	Easy
1342	Number of Steps to Reduce a Number to Zero	Easy
1323	Maximum 69 Number	Easy
1356	Sort Integers by The Number of 1 Bits	Easy
1337	The K Weakest Rows in a Matrix	Easy
1346	Check If N and Its Double Exist	Easy
1370	Increasing Decreasing String	Easy
1351	Count Negative Numbers in a Sorted Matrix	Easy
1365	How Many Numbers Are Smaller Than the Current Number	Easy
1385	Find the Distance Value Between Two Arrays	Easy
1374	Generate a String With Characters That Have Odd Counts	Easy
1380	Lucky Numbers in a Matrix	Easy
1399	Count Largest Group	Easy
1389	Create Target Array in the Given Order	Easy
1394	Find Lucky Integer in an Array	Easy
1413	Minimum Value to Get Positive Step by Step Sum	Easy
1403	Minimum Subsequence in Non-Increasing Order	Easy
1408	String Matching in an Array	Easy
1431	Kids With the Greatest Number of Candies	Easy
1417	Reformat The String	Easy
1422	Maximum Score After Splitting a String	Easy
1446	Consecutive Characters	Easy
1436	Destination City	Easy
1441	Build an Array With Stack Operations	Easy
1460	Make Two Arrays Equal by Reversing Sub-arrays	Easy
1450	Number of Students Doing Homework at a Given Time	Easy
1455	Check If a Word Occurs As a Prefix of Any Word in a Sentence	Easy
1475	Final Prices With a Special Discount in a Shop	Easy
1464	Maximum Product of Two Elements in an Array	Easy
1470	Shuffle the Array	Easy
1480	Running Sum of 1d Array	Easy