LeetCode Archiver

Download personal submissions on LeetCode, generate summary figures and a markdown file.

Use

• clone the project and enter the project root path

• create a file config.json where you config the username and password

{
  "username": "xxxx",
  "password": "xxxx"
}

• python3 main.py

Note

Programming languages currently supported

• C++, C, C#, Rust, Golang
• Java, Kotlin, Scala
• Python3, Python, Ruby, JavaScript, PHP
• Swift
• MySQL

Feature

• download personal submissions on LeetCode
• generate summary figures and a markdown file

Implementation

• Python3
• Scrapy
• requests
• numpy
• matplotlib

Thanks to

• Lingyun Chen
• Chuck Liu
• nusr
• fyears/leetcode_stat.py

Demo

LeetCode Solutions

Last Updated: 2019-5-5 17:54:12

Downloaded by ZintrulCre/LeetCode_Archiver

#	title	submissions	topics	difficulty	accepted rate	likes	dislikes
1038	Binary Search Tree to Greater Sum Tree	Python3, C++	Binary Search Tree	Medium	83.0%	16	4
1037	Valid Boomerang	C++	Math	Easy	34.4%	3	15
1035	Uncrossed Lines	C++	Array	Medium	48.9%	106	5
1034	Coloring A Border	C++	Depth-first Search	Medium	42.4%	33	82
1033	Moving Stones Until Consecutive	Python3, C++	Brainteaser	Easy	31.8%	15	170
1032	Stream of Characters	C++	Trie	Hard	39.6%	66	18
1031	Maximum Sum of Two Non-Overlapping Subarrays	Python3, C++	Array	Medium	55.5%	113	7
1030	Matrix Cells in Distance Order	Python3, C++	Sort	Easy	67.2%	49	22
1029	Two City Scheduling	Python3, C++	Greedy	Easy	53.2%	147	12
1028	Recover a Tree From Preorder Traversal	C++	Tree, Depth-first Search	Hard	72.7%	111	2
1027	Longest Arithmetic Sequence	C++	Dynamic Programming	Medium	45.2%	120	8
1026	Maximum Difference Between Node and Ancestor	C++, Python3	Tree, Depth-first Search	Medium	58.2%	93	7
1025	Divisor Game	Python3, Python, Golang, JavaScript, C#, Java, C, C++	Math, Dynamic Programming	Easy	61.7%	56	142
1024	Video Stitching	C++, Python3	Dynamic Programming	Medium	47.4%	120	15
1023	Camelcase Matching	Python3, C++	String, Trie	Medium	57.2%	44	43
1022	Sum of Root To Leaf Binary Numbers	Python3, C++	Tree	Easy	50.3%	62	47
1021	Remove Outermost Parentheses	Python3, C++	Stack	Easy	77.4%	81	102
1020	Number of Enclaves	Python3, C++	Depth-first Search	Medium	54.7%	74	10
1019	Next Greater Node In Linked List	Python3, C++	Linked List, Stack	Medium	56.2%	140	13
1018	Binary Prefix Divisible By 5	Python3, C++	Array	Easy	46.0%	44	38
1017	Convert to Base -2	Python3, C++	Math	Medium	55.5%	54	81
1015	Smallest Integer Divisible by K	C++, Python, Python3	Math	Medium	27.5%	46	138
1014	Best Sightseeing Pair	C++, Python, Python3	Array	Medium	48.0%	158	11
1013	Partition Array Into Three Parts With Equal Sum	C++, Python3, Python	Array	Easy	54.8%	91	16
1011	Capacity To Ship Packages Within D Days	C++, Python3	Array, Binary Search	Medium	52.0%	203	9
1010	Pairs of Songs With Total Durations Divisible by 60	Python3, C++	Array	Easy	45.0%	107	8
1009	Complement of Base 10 Integer	Python3, C++	Math	Easy	58.9%	43	12
1008	Construct Binary Search Tree from Preorder Traversal	C++	Tree	Medium	72.5%	168	8
1007	Minimum Domino Rotations For Equal Row	C++	Array, Greedy	Medium	46.9%	45	52
1006	Clumsy Factorial	Python3, C++	Math	Medium	54.0%	33	73
1005	Maximize Sum Of Array After K Negations	C++	Greedy	Easy	49.5%	85	14
1003	Check If Word Is Valid After Substitutions	C++, Python3	String, Stack	Medium	51.9%	62	112
1002	Find Common Characters	C++, Python3	Array, Hash Table	Easy	66.0%	199	29
1001	Grid Illumination	C++	Hash Table	Hard	34.2%	86	34
999	Available Captures for Rook	C++	Array	Easy	66.7%	67	147
998	Maximum Binary Tree II	C++	Tree	Medium	62.2%	61	133
997	Find the Town Judge	C++	Graph	Easy	48.7%	112	19
995	Minimum Number of K Consecutive Bit Flips	C++	Greedy, Sliding Window	Hard	49.4%	111	20
994	Rotting Oranges	C++	Breadth-first Search	Easy	46.4%	189	9
993	Cousins in Binary Tree	C++	Tree, Breadth-first Search	Easy	52.5%	138	8
991	Broken Calculator	Python3, C++, Python, Java, C, Golang	Math, Greedy	Medium	39.7%	115	49
990	Satisfiability of Equality Equations	C++, Python3	Union Find, Graph	Medium	39.4%	169	3
989	Add to Array-Form of Integer	Python3, C++	Array	Easy	44.6%	97	17
988	Smallest String Starting From Leaf	Python3, C++	Tree, Depth-first Search	Medium	47.5%	118	17
987	Vertical Order Traversal of a Binary Tree	C++	Hash Table, Tree	Medium	32.5%	91	201
986	Interval List Intersections	Python3, C++	Two Pointers	Medium	62.4%	179	10
985	Sum of Even Numbers After Queries	Golang, Python3, C++	Array	Easy	64.7%	124	51
984	String Without AAA or BBB	C++	Greedy	Medium	33.1%	83	159
983	Minimum Cost For Tickets	C++	Dynamic Programming	Medium	57.2%	377	8
982	Triples with Bitwise AND Equal To Zero	C++	Dynamic Programming	Hard	53.6%	48	69
981	Time Based Key-Value Store	C++	Hash Table, Binary Search	Medium	50.6%	143	29
979	Distribute Coins in Binary Tree	C++, Python3	Tree, Depth-first Search	Medium	66.6%	422	10
978	Longest Turbulent Subarray	Python3, C++	Array, Dynamic Programming, Sliding Window	Medium	45.5%	77	37
977	Squares of a Sorted Array	C++, Python3	Array, Two Pointers	Easy	72.3%	235	34
976	Largest Perimeter Triangle	Python3, C++	Math, Sort	Easy	57.0%	138	21
974	Subarray Sums Divisible by K	C++, Python3	Array, Hash Table	Medium	43.9%	226	18
973	K Closest Points to Origin	Python3, C++	Divide and Conquer, Heap, Sort	Medium	63.0%	338	39
971	Flip Binary Tree To Match Preorder Traversal	C++	Tree, Depth-first Search	Medium	42.4%	107	50
970	Powerful Integers	Python3, C++	Hash Table, Math	Easy	39.5%	56	120
969	Pancake Sorting	Python3, C++	Array, Sort	Medium	62.1%	116	131
967	Numbers With Same Consecutive Differences	Python3, C++	Dynamic Programming	Medium	36.8%	76	25
966	Vowel Spellchecker	Python3, C++	Hash Table, String	Medium	41.1%	56	112
965	Univalued Binary Tree	C++, Python3	Tree	Easy	67.0%	154	28
962	Maximum Width Ramp	C++	Array	Medium	41.1%	228	9
961	N-Repeated Element in Size 2N Array	C++	Hash Table	Easy	72.6%	172	120
958	Check Completeness of a Binary Tree	C++	Tree	Medium	46.6%	185	5
957	Prison Cells After N Days	C++	Hash Table	Medium	38.0%	87	172
954	Array of Doubled Pairs	C++	Array, Hash Table	Medium	34.2%	102	20
953	Verifying an Alien Dictionary	C++	Hash Table	Easy	55.7%	147	57
951	Flip Equivalent Binary Trees	C++	Tree	Medium	65.2%	202	7
949	Largest Time for Given Digits	C++	Math	Easy	33.8%	61	174
947	Most Stones Removed with Same Row or Column	C++	Depth-first Search, Union Find	Medium	54.2%	367	100
944	Delete Columns to Make Sorted	C++	Greedy	Easy	69.3%	39	783
942	DI String Match	Python3, C++	Math	Easy	70.0%	370	130
941	Valid Mountain Array	Python3, C++	Array	Easy	35.1%	125	35
938	Range Sum of BST	Python, Python3, C++	Tree, Recursion	Easy	80.3%	273	36
933	Number of Recent Calls	C++, Python3	Queue	Easy	69.4%	117	524
931	Minimum Falling Path Sum	C++	Dynamic Programming	Medium	58.6%	233	27
929	Unique Email Addresses	Python3, C++	String	Easy	72.3%	428	119
926	Flip String to Monotone Increasing	C++	Array	Medium	49.1%	289	13
925	Long Pressed Name	Python3, Golang, C++	Two Pointers, String	Easy	44.4%	209	24
922	Sort Array By Parity II	C++	Array, Sort	Easy	66.9%	258	25
921	Minimum Add to Make Parentheses Valid	Python, Python3, C++	Stack, Greedy	Medium	69.9%	235	18
919	Complete Binary Tree Inserter	C++	Tree	Medium	55.2%	124	33
917	Reverse Only Letters	C++	String	Easy	56.0%	232	24
914	X of a Kind in a Deck of Cards	Python3, C++	Array, Math	Easy	34.2%	203	41
912	Sort an Array	C++	None	Medium	64.3%	30	35
911	Online Election	C++	Binary Search	Medium	46.2%	160	107
905	Sort Array By Parity	C++, Python	Array	Easy	72.5%	428	49
904	Fruit Into Baskets	C++	Two Pointers	Medium	41.3%	402	617
900	RLE Iterator	C++	Array	Medium	49.8%	113	52
897	Increasing Order Search Tree	C++	Tree, Depth-first Search	Easy	64.0%	237	272
896	Monotonic Array	Python3, C++	Array	Easy	55.0%	250	23
894	All Possible Full Binary Trees	C++	Tree, Recursion	Medium	70.3%	379	33
892	Surface Area of 3D Shapes	Golang, C++	Math, Geometry	Easy	55.8%	139	174
890	Find and Replace Pattern	C++	String	Medium	70.8%	332	29
889	Construct Binary Tree from Preorder and Postorder Traversal	C++	Tree	Medium	59.5%	366	21
888	Fair Candy Swap	C++	Array	Easy	56.5%	271	67
886	Possible Bipartition	C++	Depth-first Search	Medium	40.5%	279	13
885	Spiral Matrix III	C++	Math	Medium	63.9%	86	132
884	Uncommon Words from Two Sentences	C++	Hash Table	Easy	60.7%	210	54
883	Projection Area of 3D Shapes	C++	Math	Easy	65.6%	134	467
881	Boats to Save People	C++	Two Pointers, Greedy	Medium	43.7%	231	23
880	Decoded String at Index	C++	Stack	Medium	23.0%	225	47
877	Stone Game	C++	Math, Dynamic Programming, Minimax	Medium	61.2%	274	502
876	Middle of the Linked List	C++	Linked List	Easy	63.7%	463	36
875	Koko Eating Bananas	C++	Binary Search	Medium	45.7%	279	30
873	Length of Longest Fibonacci Subsequence	Python3, C++	Array, Dynamic Programming	Medium	46.0%	352	15
872	Leaf-Similar Trees	C++	Tree, Depth-first Search	Easy	63.0%	361	21
870	Advantage Shuffle	Python3, C++	Array, Greedy	Medium	42.2%	237	18
869	Reordered Power of 2	C++	Math	Medium	50.6%	117	57
868	Binary Gap	C++	Math	Easy	59.3%	113	284
867	Transpose Matrix	Python3, C++	Array	Easy	63.8%	185	204
865	Smallest Subtree with all the Deepest Nodes	C++	Tree	Medium	55.3%	331	88
863	All Nodes Distance K in Binary Tree	C++	Tree, Depth-first Search, Breadth-first Search	Medium	46.7%	674	14
861	Score After Flipping Matrix	C++	Greedy	Medium	69.1%	230	63
860	Lemonade Change	C++	Greedy	Easy	50.2%	268	49
859	Buddy Strings	C++	String	Easy	27.6%	273	159
856	Score of Parentheses	C++	String, Stack	Medium	55.8%	515	22
853	Car Fleet	C++	Stack	Medium	39.3%	222	134
852	Peak Index in a Mountain Array	C++	Binary Search	Easy	69.5%	264	626
849	Maximize Distance to Closest Person	C++	Array	Easy	40.8%	380	63
848	Shifting Letters	C++	String	Medium	40.3%	148	25
846	Hand of Straights	C++	Ordered Map	Medium	48.8%	266	39
844	Backspace String Compare	C++	Two Pointers, Stack	Easy	45.8%	591	42
841	Keys and Rooms	C++	Depth-first Search, Graph	Medium	60.1%	439	33
840	Magic Squares In Grid	C++	Array	Easy	35.5%	67	610
838	Push Dominoes	C++	Two Pointers, Dynamic Programming	Medium	43.5%	283	32
837	New 21 Game	C++	Dynamic Programming	Medium	31.2%	274	157
834	Sum of Distances in Tree	C++	Tree, Depth-first Search	Hard	39.2%	421	22
833	Find And Replace in String	C++	String	Medium	45.8%	149	209
832	Flipping an Image	C++	Array	Easy	72.3%	469	97
831	Masking Personal Information	C++	String	Medium	42.0%	42	186
830	Positions of Large Groups	C++	Array	Easy	47.6%	192	49
825	Friends Of Appropriate Ages	C++	Array	Medium	36.0%	158	323
824	Goat Latin	C++	String	Easy	57.4%	139	386
821	Shortest Distance to a Character	Python3	None	Easy	63.2%	554	49
819	Most Common Word	C++	String	Easy	42.1%	284	628
817	Linked List Components	C++	Linked List	Medium	54.5%	205	501
814	Binary Tree Pruning	C++	Tree	Medium	70.7%	515	13
813	Largest Sum of Averages	C++	Dynamic Programming	Medium	44.6%	499	16
811	Subdomain Visit Count	C++	Hash Table	Easy	65.0%	237	370
807	Max Increase to Keep City Skyline	Golang, C++	None	Medium	81.4%	489	116
806	Number of Lines To Write String	Python3, C++, Python	None	Easy	62.9%	145	573
804	Unique Morse Code Words	C++	String	Easy	74.5%	408	330
802	Find Eventual Safe States	C++	Depth-first Search, Graph	Medium	43.3%	335	49
801	Minimum Swaps To Make Sequences Increasing	C++	Dynamic Programming	Medium	34.4%	481	28
795	Number of Subarrays with Bounded Maximum	Python3, C++	Array	Medium	43.0%	331	30
792	Number of Matching Subsequences	Python3, C++	Array	Medium	42.5%	439	34
788	Rotated Digits	C++	String	Easy	53.9%	189	649
787	Cheapest Flights Within K Stops	C++	Dynamic Programming, Heap, Breadth-first Search	Medium	34.6%	725	26
785	Is Graph Bipartite?	C++	Depth-first Search, Breadth-first Search, Graph	Medium	43.0%	601	74
784	Letter Case Permutation	C++	Backtracking, Bit Manipulation	Easy	56.2%	593	74
783	Minimum Distance Between BST Nodes	C++	Tree, Recursion	Easy	50.3%	341	80
775	Global and Local Inversions	Python3, C++	Array, Math	Medium	38.5%	197	113
771	Jewels and Stones	C++, Python3	Hash Table	Easy	83.0%	1379	257
769	Max Chunks To Make Sorted	Python3, C++	Array	Medium	51.5%	428	74
766	Toeplitz Matrix	Python3, C++	Array	Easy	61.6%	578	66
764	Largest Plus Sign	C++	Dynamic Programming	Medium	43.3%	258	59
763	Partition Labels	Python3, C++	Two Pointers, Greedy	Medium	69.9%	870	48
762	Prime Number of Set Bits in Binary Representation	C++	Bit Manipulation	Easy	58.8%	150	229
756	Pyramid Transition Matrix	C++	Bit Manipulation, Depth-first Search	Medium	51.1%	168	259
754	Reach a Number	C++	Math	Easy	32.2%	262	208
748	Shortest Completing Word	C++	Hash Table	Easy	53.9%	108	415
747	Largest Number At Least Twice of Others	C++	Array	Easy	40.4%	195	393
746	Min Cost Climbing Stairs	C++	Array, Dynamic Programming	Easy	46.9%	1018	228
744	Find Smallest Letter Greater Than Target	C++	Binary Search	Easy	43.9%	211	318
743	Network Delay Time	C++	Heap, Depth-first Search, Breadth-first Search, Graph	Medium	41.5%	570	161
740	Delete and Earn	C++	Dynamic Programming	Medium	45.6%	574	50
739	Daily Temperatures	C++, Python3	Hash Table, Stack	Medium	59.8%	1179	30
733	Flood Fill	C++	Depth-first Search	Easy	50.6%	406	94
731	My Calendar II	Python3, C++	Ordered Map	Medium	44.0%	331	56
729	My Calendar I	C++	Array	Medium	47.0%	344	27
728	Self Dividing Numbers	C++, Python, Python3	Math	Easy	69.8%	413	218
725	Split Linked List in Parts	Python3, C++	Linked List	Medium	48.8%	335	80
724	Find Pivot Index	C++	Array	Easy	41.0%	572	142
718	Maximum Length of Repeated Subarray	C++	Array, Hash Table, Binary Search, Dynamic Programming	Medium	45.7%	606	28
717	1-bit and 2-bit Characters	C++	Array	Easy	49.2%	247	630
714	Best Time to Buy and Sell Stock with Transaction Fee	Python3, C++	Array, Dynamic Programming, Greedy	Medium	50.2%	867	31
709	To Lower Case	Python, C++	String	Easy	76.7%	260	866
707	Design Linked List	C++	Linked List, Design	Easy	22.8%	288	163
704	Binary Search	Python3, C++	Binary Search	Easy	47.1%	226	28
703	Kth Largest Element in a Stream	Python3, C++	Heap	Easy	46.3%	279	122
701	Insert into a Binary Search Tree	C++	Tree	Medium	75.3%	304	36
700	Search in a Binary Search Tree	C++	Tree	Easy	67.7%	290	89
698	Partition to K Equal Sum Subsets	C++	Dynamic Programming, Recursion	Medium	42.0%	770	49
697	Degree of an Array	Python3, C++	Array	Easy	50.1%	474	409
696	Count Binary Substrings	C++	String	Easy	53.2%	601	108
695	Max Area of Island	Python3, C++	Array, Depth-first Search	Medium	56.9%	1060	61
693	Binary Number with Alternating Bits	C++	Bit Manipulation	Easy	57.8%	288	68
690	Employee Importance	C++	Hash Table, Depth-first Search, Breadth-first Search	Easy	53.9%	382	375
687	Longest Univalue Path	C++	Tree, Recursion	Easy	33.6%	939	214
684	Redundant Connection	C++	Tree, Union Find, Graph	Medium	51.4%	603	190
682	Baseball Game	C++	Stack	Easy	60.8%	302	764
680	Valid Palindrome II	Python3	String	Easy	34.1%	685	45
674	Longest Continuous Increasing Subsequence	C++	Array	Easy	44.2%	424	91
673	Number of Longest Increasing Subsequence	C++	Dynamic Programming	Medium	33.3%	762	55
671	Second Minimum Node In a Binary Tree	C++	Tree	Easy	43.5%	369	537
670	Maximum Swap	Python3, C++	Array, Math	Medium	39.5%	523	42
669	Trim a Binary Search Tree	C++	Tree	Easy	60.2%	1096	127
667	Beautiful Arrangement II	Python3, C++	Array	Medium	51.7%	212	512
665	Non-decreasing Array	Python3, C++	Array	Easy	19.5%	1010	209
662	Maximum Width of Binary Tree	Python3, C++	Tree	Medium	39.7%	602	95
661	Image Smoother	C++	Array	Easy	48.6%	177	773
657	Robot Return to Origin	C++	String	Easy	71.3%	685	550
654	Maximum Binary Tree	C++	Tree	Medium	75.8%	1047	126
653	Two Sum IV - Input is a BST	C++	Tree	Easy	52.3%	839	99
652	Find Duplicate Subtrees	Python3, C++	Tree	Medium	45.2%	728	150
650	2 Keys Keyboard	Python3, C++	Dynamic Programming	Medium	46.4%	648	43
649	Dota2 Senate	C++	Greedy	Medium	37.5%	193	151
648	Replace Words	C++	Hash Table, Trie	Medium	51.6%	423	104
647	Palindromic Substrings	Python3, C++	String, Dynamic Programming	Medium	56.7%	1306	70
646	Maximum Length of Pair Chain	Python3, C++	Dynamic Programming	Medium	48.5%	541	50
645	Set Mismatch	Python3	Hash Table, Math	Easy	40.5%	400	223
643	Maximum Average Subarray I	C++	Array	Easy	39.4%	442	82
638	Shopping Offers	C++	Dynamic Programming, Depth-first Search	Medium	48.4%	353	321
637	Average of Levels in Binary Tree	C++	Tree	Easy	58.5%	786	127
633	Sum of Square Numbers	Python3	Math	Easy	32.7%	321	217
628	Maximum Product of Three Numbers	C++	Array, Math	Easy	45.9%	643	253
627	Swap Salary	MySQL	None	Easy	68.2%	291	223
623	Add One Row to Tree	C++	Tree	Medium	47.2%	271	97
621	Task Scheduler	Python3, C++	Array, Greedy, Queue	Medium	45.3%	1567	264
620	Not Boring Movies	MySQL	None	Easy	61.9%	172	200
617	Merge Two Binary Trees	C++	Tree	Easy	69.9%	1753	125
611	Valid Triangle Number	Python3, C++	Array	Medium	44.9%	559	69
609	Find Duplicate File in System	Python3, Python, C++	Hash Table, String	Medium	54.8%	219	362
606	Construct String from Binary Tree	C++	String, Tree	Easy	51.4%	516	713
605	Can Place Flowers	C++, Python3	Array	Easy	30.8%	446	253
599	Minimum Index Sum of Two Lists	Python3	Hash Table	Easy	47.7%	340	140
596	Classes More Than 5 Students	MySQL	None	Easy	35.4%	140	400
595	Big Countries	MySQL	None	Easy	73.5%	354	492
594	Longest Harmonious Subsequence	C++	Hash Table	Easy	43.5%	393	54
590	N-ary Tree Postorder Traversal	C++	Tree	Easy	67.0%	263	37
589	N-ary Tree Preorder Traversal	C++	Tree	Easy	67.0%	206	32
581	Shortest Unsorted Continuous Subarray	C++	Array	Easy	29.9%	1376	66
576	Out of Boundary Paths	C++	Dynamic Programming, Depth-first Search	Medium	31.9%	279	107
575	Distribute Candies	C++	Hash Table	Easy	59.5%	277	645
572	Subtree of Another Tree	C++	Tree	Easy	41.6%	1150	43
566	Reshape the Matrix	Python3, C++	Array	Easy	58.7%	553	83
565	Array Nesting	Python3, C++	Array	Medium	52.3%	528	74
563	Binary Tree Tilt	C++	Tree	Easy	46.8%	311	703
561	Array Partition I	C++	Array	Easy	68.8%	547	1654
560	Subarray Sum Equals K	Python3, C++	Array, Hash Table	Medium	42.1%	1859	47
559	Maximum Depth of N-ary Tree	C++	Tree, Depth-first Search, Breadth-first Search	Easy	65.4%	330	19
557	Reverse Words in a String III	C++	String	Easy	63.8%	604	66
556	Next Greater Element III	C++	String	Medium	29.9%	343	109
551	Student Attendance Record I	Golang, Python3, C++	String	Easy	45.1%	142	583
547	Friend Circles	C++	Depth-first Search, Union Find	Medium	53.4%	974	73
543	Diameter of Binary Tree	C++	Tree	Easy	46.5%	1332	80
542	01 Matrix	C++	Depth-first Search, Breadth-first Search	Medium	35.4%	637	76
538	Convert BST to Greater Tree	C++	Tree	Easy	50.6%	1220	82
537	Complex Number Multiplication	C++	Math, String	Medium	65.4%	156	542
532	K-diff Pairs in an Array	Python3, C++	Array, Two Pointers	Easy	29.7%	352	767
529	Minesweeper	C++	Depth-first Search, Breadth-first Search	Medium	52.5%	288	301
528	Random Pick with Weight	Python3	Binary Search, Random	Medium	42.7%	235	400
526	Beautiful Arrangement	Python3, C++	Backtracking	Medium	54.4%	416	112
524	Longest Word in Dictionary through Deleting	Python3, C++	Two Pointers, Sort	Medium	45.5%	311	171
523	Continuous Subarray Sum	C++	Math, Dynamic Programming	Medium	24.2%	659	825
521	Longest Uncommon Subsequence I	C++, Python3	String	Easy	56.3%	203	3258
520	Detect Capital	C++	String	Easy	52.4%	301	193
516	Longest Palindromic Subsequence	C++	Dynamic Programming	Medium	46.3%	846	122
515	Find Largest Value in Each Tree Row	C++	Tree, Depth-first Search, Breadth-first Search	Medium	57.7%	470	43
513	Find Bottom Left Tree Value	C++	Tree, Depth-first Search, Breadth-first Search	Medium	58.3%	551	90
509	Fibonacci Number	Python3, C++	Array	Easy	66.8%	150	135
508	Most Frequent Subtree Sum	C++	Hash Table, Tree	Medium	54.3%	377	74
506	Relative Ranks	Python, Python3, C++	None	Easy	48.2%	186	357
503	Next Greater Element II	C++, Python3	Stack	Medium	50.9%	648	40
501	Find Mode in Binary Search Tree	C++	Tree	Easy	39.3%	540	205
500	Keyboard Row	C++	Hash Table	Easy	62.1%	387	483
496	Next Greater Element I	C++	Stack	Easy	59.3%	755	1238
495	Teemo Attacking	C++	Array	Medium	52.1%	237	491
494	Target Sum	C++	Dynamic Programming, Depth-first Search	Medium	45.1%	1304	64
492	Construct the Rectangle	Python3, C++	None	Easy	48.6%	126	199
485	Max Consecutive Ones	Python3, C++	Array	Easy	54.9%	352	305
476	Number Complement	C++	Bit Manipulation	Easy	62.3%	533	70
475	Heaters	C++	Binary Search	Easy	31.6%	473	498
474	Ones and Zeroes	C++	Dynamic Programming	Medium	39.6%	540	128
473	Matchsticks to Square	C++	Depth-first Search	Medium	35.9%	305	39
467	Unique Substrings in Wraparound String	C++	Dynamic Programming	Medium	33.8%	350	57
463	Island Perimeter	C++	Hash Table	Easy	60.7%	1024	80
461	Hamming Distance	Python, C++	Bit Manipulation	Easy	70.2%	1274	113
455	Assign Cookies	Python3, C++	Greedy	Easy	48.3%	302	65
452	Minimum Number of Arrows to Burst Balloons	Python3, C++	Greedy	Medium	46.2%	466	25
450	Delete Node in a BST	C++	Tree	Medium	39.8%	858	55
449	Serialize and Deserialize BST	C++	Tree	Medium	46.8%	578	45
448	Find All Numbers Disappeared in an Array	Python3, C++, Python	Array	Easy	53.2%	1568	149
447	Number of Boomerangs	C++	Hash Table	Easy	49.7%	291	423
445	Add Two Numbers II	Python3, C++	Linked List	Medium	49.9%	700	90
442	Find All Duplicates in an Array	Python3, C++	Array	Medium	60.6%	1027	110
441	Arranging Coins	C++	Math, Binary Search	Easy	37.8%	190	444
438	Find All Anagrams in a String	Python3, C++	Hash Table	Easy	37.1%	1508	118
437	Path Sum III	C++	Tree	Easy	42.6%	1753	84
435	Non-overlapping Intervals	Python3, C++	Greedy	Medium	41.5%	458	19
430	Flatten a Multilevel Doubly Linked List	C++	Linked List, Depth-first Search	Medium	41.8%	307	51
429	N-ary Tree Level Order Traversal	C++	Tree, Breadth-first Search	Easy	59.1%	222	26
419	Battleships in a Board	C++	None	Medium	65.6%	411	326
416	Partition Equal Subset Sum	C++	Dynamic Programming	Medium	40.4%	1168	31
415	Add Strings	Python3, C++, Python	String	Easy	43.5%	386	134
414	Third Maximum Number	Python3, C++	Array	Easy	28.9%	363	653
413	Arithmetic Slices	Python3, C++	Math, Dynamic Programming	Medium	55.7%	569	112
412	Fizz Buzz	Python3	None	Easy	59.4%	502	745
409	Longest Palindrome	C++	Hash Table	Easy	47.9%	488	52
404	Sum of Left Leaves	C++	Tree	Easy	49.0%	634	70
401	Binary Watch	C++	Backtracking, Bit Manipulation	Easy	45.3%	350	591
398	Random Pick Index	Python3	Reservoir Sampling	Medium	49.7%	251	451
394	Decode String	Python3	Stack, Depth-first Search	Medium	44.6%	1390	81
392	Is Subsequence	C++	Binary Search, Dynamic Programming, Greedy	Medium	46.6%	531	123
389	Find the Difference	C++	Hash Table, Bit Manipulation	Easy	52.9%	477	223
380	Insert Delete GetRandom O(1)	Python3, C++	Array, Hash Table, Design	Medium	42.6%	1036	81
378	Kth Smallest Element in a Sorted Matrix	Python3, C++	Binary Search, Heap	Medium	49.2%	1118	83
376	Wiggle Subsequence	Python3, C++	Dynamic Programming, Greedy	Medium	37.3%	508	43
374	Guess Number Higher or Lower	C++	Binary Search	Easy	39.2%	219	1109
371	Sum of Two Integers	C++	Bit Manipulation	Easy	51.0%	734	1261
368	Largest Divisible Subset	C++	Math, Dynamic Programming	Medium	34.7%	509	25
367	Valid Perfect Square	C++	Math, Binary Search	Easy	39.7%	434	100
357	Count Numbers with Unique Digits	C++	Math, Dynamic Programming, Backtracking	Medium	46.8%	224	591
350	Intersection of Two Arrays II	C++	Hash Table, Two Pointers, Binary Search, Sort	Easy	47.5%	662	238
349	Intersection of Two Arrays	C++, Python3	Hash Table, Two Pointers, Binary Search, Sort	Easy	54.2%	382	767
347	Top K Frequent Elements	Python3, C++	Hash Table, Heap	Medium	54.5%	1456	91
345	Reverse Vowels of a String	Python3	Two Pointers, String	Easy	41.3%	372	668
344	Reverse String	C++	Two Pointers, String	Easy	63.1%	725	470
343	Integer Break	Python3, C++	Math, Dynamic Programming	Medium	47.6%	542	159
338	Counting Bits	C++	Dynamic Programming, Bit Manipulation	Medium	64.5%	1291	99
337	House Robber III	C++	Tree, Depth-first Search	Medium	47.9%	1427	29
328	Odd Even Linked List	C++	Linked List	Medium	48.9%	702	218
326	Power of Three	Python3, C++	Math	Easy	41.6%	259	986
322	Coin Change	C++	Dynamic Programming	Medium	30.1%	1644	71
309	Best Time to Buy and Sell Stock with Cooldown	C++	Dynamic Programming	Medium	43.9%	1256	44
307	Range Sum Query - Mutable	Python3, C++	Binary Indexed Tree, Segment Tree	Medium	28.3%	664	57
306	Additive Number	C++	Backtracking	Medium	28.3%	195	286
304	Range Sum Query 2D - Immutable	C++	Dynamic Programming	Medium	32.0%	422	108
303	Range Sum Query - Immutable	Python3, C++	Dynamic Programming	Easy	37.6%	429	735
300	Longest Increasing Subsequence	Python3, C++, Python	Binary Search, Dynamic Programming	Medium	40.6%	2393	56
289	Game of Life	Python3, C++	Array	Medium	44.9%	822	168
287	Find the Duplicate Number	Python3, C++	Array, Two Pointers, Binary Search	Medium	49.3%	2341	256
283	Move Zeroes	Python3, C++, Python	Array, Two Pointers	Easy	54.1%	1943	72
279	Perfect Squares	C++, Python3	Math, Dynamic Programming, Breadth-first Search	Medium	41.7%	1374	113
278	First Bad Version	C++	Binary Search	Easy	29.7%	605	393
268	Missing Number	C++	Array, Math, Bit Manipulation	Easy	48.2%	855	1290
260	Single Number III	Python3, C++	Bit Manipulation	Medium	56.8%	809	72
258	Add Digits	Python3, C++, Python	Math	Easy	53.9%	428	764
257	Binary Tree Paths	Python3, C++	Tree, Depth-first Search	Easy	45.7%	832	65
242	Valid Anagram	Python3, C++	Hash Table, Sort	Easy	51.9%	669	98
240	Search a 2D Matrix II	Python3	Binary Search, Divide and Conquer	Medium	40.7%	1425	41
238	Product of Array Except Self	Python3, C++	Array	Medium	54.7%	2144	175
237	Delete Node in a Linked List	C++	Linked List	Easy	53.1%	691	3274
235	Lowest Common Ancestor of a Binary Search Tree	C++	Tree	Easy	44.3%	973	78
234	Palindrome Linked List	Python3, C++	Linked List, Two Pointers	Easy	35.8%	1557	231
232	Implement Queue using Stacks	C++	Stack, Design	Easy	43.0%	513	106
231	Power of Two	Python, Python3, C++	Math, Bit Manipulation	Easy	41.9%	415	117
230	Kth Smallest Element in a BST	C++	Binary Search, Tree	Medium	51.1%	1084	39
228	Summary Ranges	C++	Array	Medium	35.7%	355	349
226	Invert Binary Tree	C++	Tree	Easy	57.9%	1631	26
225	Implement Stack using Queues	C++	Stack, Design	Easy	38.9%	310	409
222	Count Complete Tree Nodes	C++	Binary Search, Tree	Medium	32.9%	902	120
221	Maximal Square	C++	Dynamic Programming	Medium	32.8%	1191	31
219	Contains Duplicate II	C++	Array, Hash Table	Easy	35.1%	463	573
217	Contains Duplicate	C++, Python3	Array, Hash Table	Easy	51.6%	374	491
216	Combination Sum III	Python3, C++	Array, Backtracking	Medium	51.2%	559	29
215	Kth Largest Element in an Array	Python3, C++	Divide and Conquer, Heap	Medium	47.4%	1919	160
213	House Robber II	Python3, C++	Dynamic Programming	Medium	35.2%	827	26
211	Add and Search Word - Data structure design	C++	Backtracking, Design, Trie	Medium	30.0%	791	51
210	Course Schedule II	C++	Depth-first Search, Breadth-first Search, Graph, Topological Sort	Medium	34.5%	882	64
209	Minimum Size Subarray Sum	C++, Python3	Array, Two Pointers, Binary Search	Medium	34.7%	1052	65
208	Implement Trie (Prefix Tree)	C++, Python3	Design, Trie	Medium	38.0%	1526	31
207	Course Schedule	C++	Depth-first Search, Breadth-first Search, Graph, Topological Sort	Medium	37.5%	1662	78
206	Reverse Linked List	Python3, C++	Linked List	Easy	54.2%	2215	61
205	Isomorphic Strings	Python3	Hash Table	Easy	37.2%	708	199
204	Count Primes	C++	Hash Table, Math	Easy	28.8%	992	385
203	Remove Linked List Elements	C++	Linked List	Easy	35.7%	785	45
202	Happy Number	Python3	Hash Table, Math	Easy	45.0%	825	201
200	Number of Islands	Python3, C++	Depth-first Search, Breadth-first Search, Union Find	Medium	41.2%	2481	90
199	Binary Tree Right Side View	C++	Tree, Depth-first Search, Breadth-first Search	Medium	47.6%	987	43
198	House Robber	Python3, C++	Dynamic Programming	Easy	40.9%	2397	72
197	Rising Temperature	MySQL	None	Easy	34.5%	223	94
196	Delete Duplicate Emails	MySQL	None	Easy	32.2%	262	311
191	Number of 1 Bits	C++	Bit Manipulation	Easy	42.9%	411	368
189	Rotate Array	C++	Array	Easy	29.8%	1244	584
183	Customers Who Never Order	MySQL	None	Easy	44.3%	219	27
182	Duplicate Emails	MySQL	None	Easy	54.1%	267	16
181	Employees Earning More Than Their Managers	MySQL	None	Easy	47.8%	334	36
175	Combine Two Tables	MySQL	None	Easy	51.1%	633	89
173	Binary Search Tree Iterator	C++	Stack, Tree, Design	Medium	48.3%	1286	237
169	Majority Element	Python3, C++	Array, Divide and Conquer, Bit Manipulation	Easy	52.3%	1566	138
167	Two Sum II - Input array is sorted	Python3, C++	Array, Two Pointers, Binary Search	Easy	50.1%	854	360
160	Intersection of Two Linked Lists	Python, C++	Linked List	Easy	33.5%	2007	165
155	Min Stack	Python3, C++	Stack, Design	Easy	36.7%	1690	179
153	Find Minimum in Rotated Sorted Array	C++, Python3	Array, Binary Search	Medium	42.8%	923	154
145	Binary Tree Postorder Traversal	Python3, C++	Stack, Tree	Hard	48.1%	850	41
144	Binary Tree Preorder Traversal	C++	Stack, Tree	Medium	51.1%	734	38
143	Reorder List	C++	Linked List	Medium	30.5%	827	63
142	Linked List Cycle II	C++	Linked List, Two Pointers	Medium	31.8%	1346	98
141	Linked List Cycle	C++, Python	Linked List, Two Pointers	Easy	36.6%	1475	157
139	Word Break	C++	Dynamic Programming	Medium	35.1%	2092	116
138	Copy List with Random Pointer	C++, Python	Hash Table, Linked List	Medium	26.8%	1490	413
136	Single Number	Python3, C++, Python	Hash Table, Bit Manipulation	Easy	59.8%	2320	88
131	Palindrome Partitioning	Python3, C++	Backtracking	Medium	40.5%	860	35
130	Surrounded Regions	Python3, C++	Depth-first Search, Breadth-first Search, Union Find	Medium	22.6%	719	417
129	Sum Root to Leaf Numbers	Python3, C++	Tree, Depth-first Search	Medium	42.2%	635	23
128	Longest Consecutive Sequence	C++	Array, Union Find	Hard	41.5%	1756	85
127	Word Ladder	Python3, C++	Breadth-first Search	Medium	23.8%	1353	785
125	Valid Palindrome	Python3	Two Pointers, String	Easy	30.9%	563	1643
122	Best Time to Buy and Sell Stock II	Java, Python3, C++	Array, Greedy	Easy	51.7%	946	1259
121	Best Time to Buy and Sell Stock	Python3, C++	Array, Dynamic Programming	Easy	47.0%	2494	118
120	Triangle	C++	Array, Dynamic Programming	Medium	39.1%	1059	114
119	Pascal's Triangle II	C++	Array	Easy	43.2%	454	160
118	Pascal's Triangle	C++	Array	Easy	45.6%	673	76
117	Populating Next Right Pointers in Each Node II	C++	Tree, Depth-first Search	Medium	34.1%	822	113
116	Populating Next Right Pointers in Each Node	C++, C, Python	Tree, Depth-first Search	Medium	37.6%	962	80
114	Flatten Binary Tree to Linked List	C++	Tree, Depth-first Search	Medium	42.0%	1397	179
113	Path Sum II	C++	Tree, Depth-first Search	Medium	40.3%	846	32
112	Path Sum	C++	Tree, Depth-first Search	Easy	37.6%	885	289
111	Minimum Depth of Binary Tree	C++	Tree, Depth-first Search, Breadth-first Search	Easy	35.2%	688	368
110	Balanced Binary Tree	C++	Tree, Depth-first Search	Easy	40.8%	1175	101
109	Convert Sorted List to Binary Search Tree	C++	Linked List, Depth-first Search	Medium	40.5%	936	67
108	Convert Sorted Array to Binary Search Tree	C++	Tree, Depth-first Search	Easy	50.4%	1077	105
107	Binary Tree Level Order Traversal II	C++	Tree, Breadth-first Search	Easy	46.5%	704	131
106	Construct Binary Tree from Inorder and Postorder Traversal	Python3, C++	Array, Tree, Depth-first Search	Medium	38.9%	819	18
105	Construct Binary Tree from Preorder and Inorder Traversal	C++	Array, Tree, Depth-first Search	Medium	40.7%	1638	44
104	Maximum Depth of Binary Tree	C++	Tree, Depth-first Search	Easy	60.2%	1253	49
103	Binary Tree Zigzag Level Order Traversal	C++	Stack, Tree, Breadth-first Search	Medium	41.4%	911	58
102	Binary Tree Level Order Traversal	C++	Tree, Breadth-first Search	Medium	48.1%	1414	34
101	Symmetric Tree	C++	Tree, Depth-first Search, Breadth-first Search	Easy	43.3%	2130	45
100	Same Tree	Python3, C++	Tree, Depth-first Search	Easy	49.9%	1092	32
98	Validate Binary Search Tree	C++, Python3	Tree, Depth-first Search	Medium	25.6%	1837	276
96	Unique Binary Search Trees	Python3, C++	Dynamic Programming, Tree	Medium	45.9%	1623	64
95	Unique Binary Search Trees II	C++	Dynamic Programming, Tree	Medium	35.5%	1152	108
94	Binary Tree Inorder Traversal	C++	Hash Table, Stack, Tree	Medium	56.3%	1535	66
93	Restore IP Addresses	Python3, C++	String, Backtracking	Medium	31.3%	638	250
92	Reverse Linked List II	C++	Linked List	Medium	34.7%	1132	84
91	Decode Ways	Python3	String, Dynamic Programming	Medium	22.2%	1324	1530
90	Subsets II	Python3, C++	Array, Backtracking	Medium	42.2%	834	45
89	Gray Code	C++	Backtracking	Medium	45.5%	358	1131
88	Merge Sorted Array	Python3, C++	Array, Two Pointers	Easy	35.5%	1048	2689
86	Partition List	C++	Linked List, Two Pointers	Medium	37.0%	626	171
83	Remove Duplicates from Sorted List	Python3, C++	Linked List	Easy	42.4%	726	78
82	Remove Duplicates from Sorted List II	C++	Linked List	Medium	32.8%	783	70
79	Word Search	Python3, C++	Array, Backtracking	Medium	31.0%	1668	80
78	Subsets	Python3, C++	Array, Backtracking, Bit Manipulation	Medium	52.4%	1810	49
77	Combinations	Python3, C++	Backtracking	Medium	47.2%	742	41
75	Sort Colors	Python3, C++	Array, Two Pointers, Sort	Medium	42.0%	1554	148
74	Search a 2D Matrix	Python3, C++	Array, Binary Search	Medium	34.8%	789	96
73	Set Matrix Zeroes	C++	Array	Medium	39.6%	990	189
71	Simplify Path	C++	String, Stack	Medium	28.6%	408	1140
70	Climbing Stairs	Python3, C++	Dynamic Programming	Easy	44.0%	2074	77
69	Sqrt(x)	C++	Math, Binary Search	Easy	31.2%	724	1313
66	Plus One	C++, Python3	Array	Easy	41.1%	830	1481
64	Minimum Path Sum	Python3, C++	Array, Dynamic Programming	Medium	46.5%	1285	37
63	Unique Paths II	C++	Array, Dynamic Programming	Medium	33.4%	820	107
62	Unique Paths	Python3, C++	Array, Dynamic Programming	Medium	47.3%	1482	104
61	Rotate List	C++	Linked List, Two Pointers	Medium	27.0%	571	798
60	Permutation Sequence	C++	Math, Backtracking	Medium	32.9%	787	212
59	Spiral Matrix II	Python3, C++	Array	Medium	46.2%	420	79
58	Length of Last Word	Python3, C++	String	Easy	32.2%	355	1482
56	Merge Intervals	C++, Python3	Array, Sort	Medium	35.5%	1955	149
55	Jump Game	C++, Python3	Array, Greedy	Medium	31.8%	1815	190
54	Spiral Matrix	Python3, C++	Array	Medium	30.2%	1019	398
53	Maximum Subarray	C++	Array, Divide and Conquer, Dynamic Programming	Easy	43.4%	4105	140
52	N-Queens II	C++	Backtracking	Hard	51.6%	250	106
51	N-Queens	C++	Backtracking	Hard	38.8%	866	42
49	Group Anagrams	C++	Hash Table, String	Medium	46.3%	1549	108
48	Rotate Image	C++	Array	Medium	48.1%	1479	145
47	Permutations II	Python3, C++	Backtracking	Medium	40.2%	941	42
46	Permutations	Python3, C++	Backtracking	Medium	54.7%	1893	57
40	Combination Sum II	Python3, C++	Array, Backtracking	Medium	41.2%	795	42
39	Combination Sum	Python3, C++	Array, Backtracking	Medium	48.0%	1882	56
37	Sudoku Solver	C++	Hash Table, Backtracking	Hard	36.5%	819	56
36	Valid Sudoku	C++	Hash Table	Medium	42.7%	803	290
35	Search Insert Position	C++	Array, Binary Search	Easy	40.7%	1250	171
34	Find First and Last Position of Element in Sorted Array	C++	Array, Binary Search	Medium	33.4%	1492	83
33	Search in Rotated Sorted Array	C++, Python3	Array, Binary Search	Medium	32.8%	2293	304
31	Next Permutation	Python3, C++	Array	Medium	30.4%	1675	515
27	Remove Element	C++	Array, Two Pointers	Easy	44.3%	796	1713
26	Remove Duplicates from Sorted Array	C++, Python3	Array, Two Pointers	Easy	40.4%	1465	3139
25	Reverse Nodes in k-Group	C++	Linked List	Hard	36.1%	1106	242
24	Swap Nodes in Pairs	Python3, C++	Linked List	Medium	44.3%	1070	96
22	Generate Parentheses	C++	String, Backtracking	Medium	54.5%	2633	164
21	Merge Two Sorted Lists	C++	Linked List	Easy	46.9%	2149	304
20	Valid Parentheses	C++	String, Stack	Easy	36.4%	2819	139
19	Remove Nth Node From End of List	Python3, C++	Linked List, Two Pointers	Medium	34.2%	1714	128
18	4Sum	Python3, C++	Array, Hash Table, Two Pointers	Medium	30.3%	1004	203
17	Letter Combinations of a Phone Number	Python3, C++	String, Backtracking	Medium	41.3%	2076	286
16	3Sum Closest	Python3, C++	Array, Two Pointers	Medium	45.0%	1042	81
15	3Sum	Python3, C++	Array, Two Pointers	Medium	23.9%	3638	399
13	Roman to Integer	C++	Math, String	Easy	52.2%	1196	2571
11	Container With Most Water	Python3, C++	Array, Two Pointers	Medium	44.0%	3116	424
9	Palindrome Number	Python3, C++	Math	Easy	43.0%	1366	1276
5	Longest Palindromic Substring	C++	String, Dynamic Programming	Medium	27.1%	3466	338
2	Add Two Numbers	C++	Linked List, Math	Medium	31.0%	5030	1283
1	Two Sum	Golang, Python3, C++	Array, Hash Table	Easy	43.7%	10559	348