2020.11.09 第三次被封号，不能再爬虫了 ==

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My LeetCode Solutions

Last updated: 2020-11-09 15:16:53

The source code is fetched using the tool LeetCode_Helper.

#	Title	Solutions	Acceptance	Difficulty	Tags
LCP 22	黑白方格画	C++	29.7%	easy
LCP 24	数字游戏❤️	C++	21.5%	hard
LCP 19	秋叶收藏集	C++	51.6%	medium
LCP 13	寻宝	C++	62.3%	hard
面试题 17.13	Re-Space LCCI	C++	55.9%	medium	Memoization String
面试题 16.11	Diving Board LCCI	C++	44.2%	easy	Recursion Memoization
剑指 Offer 64	求1+2+…+n LCOF	C++	85.1%	medium
剑指 Offer 63	股票的最大利润 LCOF	C++	63.3%	medium	Dynamic Programming
剑指 Offer 62	圆圈中最后剩下的数字 LCOF	C++	63.4%	easy
剑指 Offer 55 - II	平衡二叉树 LCOF	C++	57.9%	easy	Tree Depth-first Search
剑指 Offer 61	扑克牌中的顺子 LCOF	C++	44.9%	easy
剑指 Offer 59 - II	队列的最大值 LCOF	C++	47.5%	medium	Stack Sliding Window
剑指 Offer 59 - I	滑动窗口的最大值 LCOF	C++	44.1%	easy	Queue Sliding Window
剑指 Offer 49	丑数 LCOF	C++	64.6%	medium	Math
剑指 Offer 54	二叉搜索树的第k大节点 LCOF	C++	74.0%	easy	Tree
剑指 Offer 58 - II	左旋转字符串 LCOF	C++	85.3%	easy	String
剑指 Offer 58 - I	翻转单词顺序 LCOF	C++	42.8%	easy	String
剑指 Offer 47	礼物的最大价值 LCOF	C++	67.9%	medium	Dynamic Programming
剑指 Offer 46	把数字翻译成字符串 LCOF	C++	53.9%	medium
剑指 Offer 57 - II	和为s的连续正数序列 LCOF	C++	69.1%	easy
剑指 Offer 45	把数组排成最小的数 LCOF	C++	56.0%	medium	Sort
剑指 Offer 57	和为s的两个数字 LCOF	C++	65.5%	easy
剑指 Offer 56 - II	数组中数字出现的次数 II LCOF	C++	79.2%	medium
剑指 Offer 56 - I	数组中数字出现的次数 LCOF	C++	70.9%	medium
剑指 Offer 55 - I	二叉树的深度 LCOF	C++	78.8%	easy	Tree Depth-first Search
剑指 Offer 51	数组中的逆序对 LCOF❤️	C++	46.0%	hard
剑指 Offer 34	二叉树中和为某一值的路径 LCOF	C++	57.3%	medium	Tree Depth-first Search
剑指 Offer 50	第一个只出现一次的字符 LCOF	C++	60.0%	easy	Hash Table
剑指 Offer 33	二叉搜索树的后序遍历序列 LCOF	C++	52.9%	medium
剑指 Offer 32 - III	从上到下打印二叉树 III LCOF	C++	58.4%	medium	Tree Breadth-first Search
剑指 Offer 44	数字序列中某一位的数字 LCOF	C++	39.6%	medium	Math
剑指 Offer 32 - II	从上到下打印二叉树 II LCOF	C++	68.6%	easy	Tree Breadth-first Search
剑指 Offer 32 - I	从上到下打印二叉树 LCOF	C++	64.5%	medium	Tree Breadth-first Search
剑指 Offer 39	数组中出现次数超过一半的数字 LCOF	C++	67.8%	easy	Bit Manipulation Divide and Conquer
剑指 Offer 38	字符串的排列 LCOF	C++	54.6%	medium	Backtracking
剑指 Offer 37	序列化二叉树 LCOF	C++	52.4%	hard	Tree Design
剑指 Offer 31	栈的压入、弹出序列 LCOF	C++	59.6%	medium
剑指 Offer 42	连续子数组的最大和 LCOF	C++	59.7%	easy	Divide and Conquer Dynamic Programming
剑指 Offer 41	数据流中的中位数 LCOF	C++	56.3%	hard	Heap Design
剑指 Offer 30	包含min函数的栈 LCOF	C++	57.3%	easy	Stack Design
剑指 Offer 40	最小的k个数 LCOF	C++	56.8%	easy	Heap Divide and Conquer
剑指 Offer 35	复杂链表的复制 LCOF	C++	71.7%	medium	Linked List
剑指 Offer 18	删除链表的节点 LCOF	C++	58.7%	easy	Linked List
剑指 Offer 24	反转链表 LCOF	C++	74.3%	easy	Linked List
剑指 Offer 19	正则表达式匹配 LCOF	C++	35.6%	hard	Dynamic Programming
剑指 Offer 17	打印从1到最大的n位数 LCOF	C++	78.3%	easy	Math
剑指 Offer 16	数值的整数次方 LCOF	C++	33.2%	medium	Recursion
剑指 Offer 22	链表中倒数第k个节点 LCOF	C++	78.5%	easy	Linked List Two Pointers
剑指 Offer 29	顺时针打印矩阵 LCOF	C++	44.4%	easy	Array
剑指 Offer 15	二进制中1的个数 LCOF	C++	72.9%	easy	Bit Manipulation
剑指 Offer 21	调整数组顺序使奇数位于偶数前面 LCOF	C++	64.2%	easy
剑指 Offer 20	表示数值的字符串 LCOF	C++	23.1%	medium	Math
剑指 Offer 28	对称的二叉树 LCOF	C++	57.8%	easy	Tree
剑指 Offer 27	二叉树的镜像 LCOF	C++	78.7%	easy	Tree
剑指 Offer 26	树的子结构 LCOF	C++	45.9%	medium	Tree
剑指 Offer 25	合并两个排序的链表 LCOF	C++	73.3%	easy	Divide and Conquer
剑指 Offer 14- II	剪绳子 II LCOF	C++	29.9%	medium	Math Dynamic Programming
剑指 Offer 14- I	剪绳子 LCOF	C++	55.4%	medium	Math Dynamic Programming
剑指 Offer 07	重建二叉树 LCOF	C++	68.7%	medium	Tree Recursion
剑指 Offer 06	从尾到头打印链表 LCOF	C++	75.2%	easy	Linked List
剑指 Offer 13	机器人的运动范围 LCOF	C++	50.5%	medium
剑指 Offer 05	替换空格 LCOF	C++	75.8%	easy
剑指 Offer 12	矩阵中的路径 LCOF	C++	44.8%	medium	Depth-first Search
剑指 Offer 11	旋转数组的最小数字 LCOF	C++	49.4%	easy	Binary Search
剑指 Offer 10- II	青蛙跳台阶问题 LCOF	C++	42.4%	easy	Recursion
面试题4	二维数组中的查找 LCOF	C++	41.1%	medium	Array Two Pointers
剑指 Offer 03	数组中重复的数字 LCOF	C++	67.3%	easy	Array Hash Table
剑指 Offer 10- I	斐波那契数列 LCOF	C++	33.6%	easy	Recursion
剑指 Offer 09	用两个栈实现队列 LCOF	C++	72.7%	easy	Stack Design
面试题 08.03	Magic Index LCCI	C++	68.3%	easy	Array Binary Search
1649	Create Sorted Array through Instructions	C++	42.0%	hard	Binary Indexed Tree Segment Tree Ordered Map
1648	Sell Diminishing-Valued Colored Balls	C++	24.0%	medium	Greedy Sort Math
1647	Minimum Deletions to Make Character Frequencies Unique	C++	47.5%	medium	Greedy Sort
1646	Get Maximum in Generated Array	C++	49.4%	easy	Array
1617	Count Subtrees With Max Distance Between Cities	C++	58.6%	hard	Backtracking
1616	Split Two Strings to Make Palindrome❤️	C++	26.7%	medium	Greedy Two Pointers String
1615	Maximal Network Rank	C++	47.8%	medium	Graph
1614	Maximum Nesting Depth of the Parentheses	C++	82.3%	easy	String
1610	Maximum Number of Visible Points	C++	24.7%	hard	Geometry Two Pointers
1611	Minimum One Bit Operations to Make Integers Zero	C++	57.3%	hard	Bit Manipulation Dynamic Programming
1609	Even Odd Tree	C++	53.0%	medium	Tree
1608	Special Array With X Elements Greater Than or Equal X	C++	65.4%	easy	Array
1622	Fancy Sequence❤️	C++	15.3%	hard	Design Math
1620	Coordinate With Maximum Network Quality	C++	36.6%	medium	Greedy
1601	Maximum Number of Achievable Transfer Requests	C++	47.1%	hard	Dynamic Programming
1600	Throne Inheritance	C++	48.1%	medium	Tree Design
1599	Maximum Profit of Operating a Centennial Wheel	C++	41.2%	medium	Greedy
1598	Crawler Log Folder	C++	67.8%	easy	Stack
1594	Maximum Non Negative Product in a Matrix	C++	29.4%	medium	Greedy Dynamic Programming
1593	Split a String Into the Max Number of Unique Substrings	C++	46.6%	medium	Backtracking
1592	Rearrange Spaces Between Words	C++ Python3	44.9%	easy	String
1605	Find Valid Matrix Given Row and Column Sums	C++	69.8%	medium	Greedy
1606	Find Servers That Handled Most Number of Requests❤️	C++	30.5%	hard	Ordered Map
1604	Alert Using Same Key-Card Three or More Times in a One Hour Period	C++	40.3%	medium	String Ordered Map
1603	Design Parking System	C++	84.9%	easy	Design
1579	Remove Max Number of Edges to Keep Graph Fully Traversable	C++	44.9%	hard	Union Find
1578	Minimum Deletion Cost to Avoid Repeating Letters	C++	59.1%	medium	Greedy
1577	Number of Ways Where Square of Number Is Equal to Product of Two Numbers	C++	30.9%	medium	Hash Table Math
1576	Replace All ?'s to Avoid Consecutive Repeating Characters	C++	48.1%	easy	String
1537	Get the Maximum Score	C++	35.2%	hard	Dynamic Programming
1536	Minimum Swaps to Arrange a Binary Grid	C++	41.7%	medium	Greedy
1535	Find the Winner of an Array Game	C++	43.9%	medium	Array
1534	Count Good Triplets	C++	78.2%	easy	Array
1530	Number of Good Leaf Nodes Pairs	C++	53.3%	medium	Tree Depth-first Search
1529	Bulb Switcher IV	C++	67.4%	medium	String
1528	Shuffle String	C++	79.3%	easy	Sort
1521	Find a Value of a Mysterious Function Closest to Target❤️	C++	38.2%	hard	Bit Manipulation Segment Tree Binary Search
1520	Maximum Number of Non-Overlapping Substrings❤️	C++	31.3%	hard	Greedy
1519	Number of Nodes in the Sub-Tree With the Same Label	C++	27.7%	medium	Depth-first Search Breadth-first Search
1518	Water Bottles	C++	68.2%	easy	Greedy
1526	Minimum Number of Increments on Subarrays to Form a Target Array	C++	59.1%	hard	Segment Tree
1525	Number of Good Ways to Split a String	C++	66.7%	medium	Bit Manipulation String
1524	Number of Sub-arrays With Odd Sum	C++	38.7%	medium	Array Math
1523	Count Odd Numbers in an Interval Range	C++	57.0%	easy	Math
1365	How Many Numbers Are Smaller Than the Current Number	C++	82.6%	easy	Array Hash Table
1356	Sort Integers by The Number of 1 Bits	C++	73.5%	easy	Sort Bit Manipulation
1321	Restaurant Growth🔒	SQL	59.3%	medium
1308	Running Total for Different Genders🔒	SQL	74.4%	medium
1310	XOR Queries of a Subarray	C++	65.1%	medium	Bit Manipulation
1264	Page Recommendations🔒	SQL	59.8%	medium
1241	Number of Comments per Post🔒	SQL	59.7%	easy
1204	Last Person to Fit in the Elevator🔒	SQL	71.2%	medium
1207	Unique Number of Occurrences	C++	73.3%	easy	Hash Table
1173	Immediate Food Delivery I🔒	SQL	76.0%	easy
1164	Product Price at a Given Date🔒	SQL	61.6%	medium
1158	Market Analysis I🔒	SQL	55.5%	medium
1149	Article Views II🔒	SQL	44.7%	medium
1148	Article Views I🔒	SQL	73.3%	easy
1142	User Activity for the Past 30 Days II🔒	SQL	37.5%	easy
1141	User Activity for the Past 30 Days I🔒	SQL	52.5%	easy
1132	Reported Posts II🔒	SQL	39.9%	medium
1126	Active Businesses🔒	SQL	68.6%	medium
1113	Reported Posts🔒	SQL	54.0%	easy
1112	Highest Grade For Each Student🔒	SQL	61.3%	medium
1286	Iterator for Combination	C++	62.4%	medium	Design Backtracking
1619	Mean of Array After Removing Some Elements	C++	72.2%	easy	Array
1107	New Users Daily Count🔒	SQL	40.8%	medium
1098	Unpopular Books🔒	SQL	46.9%	medium
550	Game Play Analysis IV🔒	SQL	44.9%	medium
534	Game Play Analysis III🔒	SQL	66.7%	medium
512	Game Play Analysis II🔒	SQL	53.1%	easy
511	Game Play Analysis I🔒	SQL	73.6%	easy
1084	Sales Analysis III🔒	SQL	53.9%	easy
1083	Sales Analysis II🔒	SQL	52.2%	easy
1082	Sales Analysis I🔒	SQL	75.6%	easy
1091	Shortest Path in Binary Matrix	C++	35.5%	medium	Breadth-first Search
1077	Project Employees III🔒	SQL	70.9%	medium
1076	Project Employees II🔒	SQL	51.1%	easy
1075	Project Employees I🔒	SQL	67.5%	easy
1069	Product Sales Analysis II🔒	SQL	82.1%	easy
1068	Product Sales Analysis I🔒	SQL	86.3%	easy
1050	Actors and Directors Who Cooperated At Least Three Times🔒	SQL	76.0%	easy
1045	Customers Who Bought All Products🔒	SQL	65.2%	medium
1038	Binary Search Tree to Greater Sum Tree	C++	77.9%	medium	Binary Search Tree
1025	Divisor Game	C++	71.6%	easy	Math Dynamic Programming
1024	Video Stitching	C++	57.2%	medium	Dynamic Programming
1002	Find Common Characters	C++ Python3	74.4%	easy	Array Hash Table
977	Squares of a Sorted Array	C++	73.6%	easy	Array Two Pointers
973	K Closest Points to Origin	C++	62.8%	medium	Heap Sort Divide and Conquer
509	Fibonacci Number	C++	66.2%	easy	Array
968	Binary Tree Cameras❤️	C++	48.9%	hard	Tree Depth-first Search Dynamic Programming
946	Validate Stack Sequences	C++	60.0%	medium	Stack
941	Valid Mountain Array	C++	39.3%	easy	Array
925	Long Pressed Name	C++	39.4%	easy	Two Pointers String
912	Sort an Array	C++	59.5%	medium
901	Online Stock Span❤️	C++	49.3%	medium	Stack
845	Longest Mountain in Array	C++	41.6%	medium	Two Pointers
844	Backspace String Compare	C++	52.2%	easy	Stack Two Pointers
841	Keys and Rooms	C++	65.4%	medium	Depth-first Search Graph
836	Rectangle Overlap	C++	49.8%	easy	Math
834	Sum of Distances in Tree	C++	53.5%	hard	Tree Depth-first Search
792	Number of Matching Subsequences	C++	42.9%	medium	Array
785	Is Graph Bipartite?	C++	50.0%	medium	Depth-first Search Breadth-first Search Graph
783	Minimum Distance Between BST Nodes	C++	55.6%	easy	Tree Recursion
701	Insert into a Binary Search Tree	C++	72.0%	medium	Tree
771	Jewels and Stones	C++	84.9%	easy	Hash Table
763	Partition Labels❤️	C++	76.5%	medium	Greedy Two Pointers
739	Daily Temperatures	C++	65.2%	medium	Stack Hash Table
733	Flood Fill	C++	57.9%	easy	Depth-first Search
718	Maximum Length of Repeated Subarray	C++	54.4%	medium	Array Hash Table Binary Search Dynamic Programming
714	Best Time to Buy and Sell Stock with Transaction Fee	C++	69.0%	medium	Greedy Array Dynamic Programming
696	Count Binary Substrings	C++	62.3%	easy	String
685	Redundant Connection II	C++	44.7%	hard	Tree Depth-first Search Union Find Graph
684	Redundant Connection	C++	61.7%	medium	Tree Union Find Graph
679	24 Game	C++	54.7%	hard	Depth-first Search
657	Robot Return to Origin	C++	77.9%	easy	String
647	Palindromic Substrings	C++	64.5%	medium	String Dynamic Programming
637	Average of Levels in Binary Tree	C++	68.7%	easy	Tree
632	Smallest Range Covering Elements from K Lists	C++	58.8%	hard	Hash Table Two Pointers String
620	Not Boring Movies	SQL	76.6%	easy
619	Biggest Single Number🔒	SQL	47.7%	easy
617	Merge Two Binary Trees	C++	78.4%	easy	Tree
614	Second Degree Follower🔒	SQL	34.2%	medium
613	Shortest Distance in a Line🔒	SQL	82.0%	easy
612	Shortest Distance in a Plane🔒	SQL	65.9%	medium
610	Triangle Judgement🔒	SQL	66.9%	easy
608	Tree Node🔒	SQL	67.8%	medium
607	Sales Person🔒	SQL	67.4%	easy
603	Consecutive Available Seats🔒	SQL	68.0%	easy
602	Friend Requests II: Who Has the Most Friends🔒	SQL	62.8%	medium
597	Friend Requests I: Overall Acceptance Rate🔒	SQL	45.8%	easy
586	Customer Placing the Largest Number of Orders🔒	SQL	75.6%	easy
585	Investments in 2016🔒	SQL	58.6%	medium
584	Find Customer Referee🔒	SQL	77.5%	easy
580	Count Student Number in Departments🔒	SQL	52.6%	medium
578	Get Highest Answer Rate Question🔒	SQL	50.8%	medium
577	Employee Bonus🔒	SQL	71.5%	easy
574	Winning Candidate🔒	SQL	63.4%	medium
570	Managers with at Least 5 Direct Reports🔒	SQL	67.6%	medium
557	Reverse Words in a String III	C++	73.5%	easy	String
546	Remove Boxes	C++	64.4%	hard	Depth-first Search Dynamic Programming
538	Convert BST to Greater Tree	C++	63.9%	medium	Tree
530	Minimum Absolute Difference in BST	C++	60.7%	easy	Tree
529	Minesweeper	C++	65.4%	medium	Depth-first Search Breadth-first Search
503	Next Greater Element II	C++	57.9%	medium	Stack
501	Find Mode in Binary Search Tree	C++	49.6%	easy	Tree
496	Next Greater Element I	C++	65.9%	easy	Stack
491	Increasing Subsequences	C++	55.9%	medium	Depth-first Search
486	Predict the Winner	C++	58.7%	medium	Minimax Dynamic Programming
463	Island Perimeter	C++	71.5%	easy	Hash Table
459	Repeated Substring Pattern	C++	51.2%	easy	String
445	Add Two Numbers II	C++	58.1%	medium	Linked List
437	Path Sum III	C++	56.2%	medium	Tree
416	Partition Equal Subset Sum	C++	49.0%	medium	Dynamic Programming
415	Add Strings	C++	51.9%	easy	String
410	Split Array Largest Sum	C++	53.3%	hard	Binary Search Dynamic Programming
404	Sum of Left Leaves	C++	56.3%	easy	Tree
400	Nth Digit	C++	38.5%	medium	Math
392	Is Subsequence	C++	50.6%	easy	Greedy Binary Search Dynamic Programming
381	Insert Delete GetRandom O(1) - Duplicates allowed	C++	45.0%	hard	Design Array Hash Table
378	Kth Smallest Element in a Sorted Matrix❤️	C++	62.9%	medium	Heap Binary Search
365	Water and Jug Problem	C++	35.3%	medium	Math
350	Intersection of Two Arrays II	C++	53.2%	easy	Sort Hash Table Two Pointers Binary Search
349	Intersection of Two Arrays	C++	73.2%	easy	Sort Hash Table Two Pointers Binary Search
347	Top K Frequent Elements	C++	61.8%	medium	Heap Hash Table
344	Reverse String	C++	73.6%	easy	Two Pointers String
343	Integer Break	C++	58.8%	medium	Math Dynamic Programming
337	House Robber III	C++	60.6%	medium	Tree Depth-first Search
336	Palindrome Pairs	C++	39.7%	hard	Trie Hash Table String
332	Reconstruct Itinerary	C++	43.9%	medium	Depth-first Search Graph
329	Longest Increasing Path in a Matrix	C++	46.2%	hard	Depth-first Search Topological Sort Memoization
327	Count of Range Sum❤️	C++	42.4%	hard	Sort Binary Indexed Tree Segment Tree Binary Search Divide and Conquer
315	Count of Smaller Numbers After Self	C++	41.6%	hard	Sort Binary Indexed Tree Segment Tree Binary Search Divide and Conquer
312	Burst Balloons	C++	67.2%	hard	Divide and Conquer Dynamic Programming
309	Best Time to Buy and Sell Stock with Cooldown	C++	57.2%	medium	Dynamic Programming
300	Longest Increasing Subsequence	C++	45.3%	medium	Binary Search Dynamic Programming
297	Serialize and Deserialize Binary Tree	C++	52.5%	hard	Tree Design
295	Find Median from Data Stream	C++	49.0%	hard	Heap Design
264	Ugly Number II	C++	54.5%	medium	Heap Math Dynamic Programming
260	Single Number III	C++	74.0%	medium	Bit Manipulation
257	Binary Tree Paths	C++	66.2%	easy	Tree Depth-first Search
240	Search a 2D Matrix II	C++	42.4%	medium	Binary Search Divide and Conquer
239	Sliding Window Maximum❤️	C++	49.2%	hard	Heap Sliding Window
235	Lowest Common Ancestor of a Binary Search Tree	C++	65.9%	easy	Tree
234	Palindrome Linked List	C++	44.9%	easy	Linked List Two Pointers
226	Invert Binary Tree	C++	77.5%	easy	Tree
216	Combination Sum III	C++	73.5%	medium	Array Backtracking
214	Shortest Palindrome	C++	36.5%	hard	String
210	Course Schedule II	C++	52.1%	medium	Depth-first Search Breadth-first Search Graph Topological Sort
207	Course Schedule	C++	54.4%	medium	Depth-first Search Breadth-first Search Graph Topological Sort
206	Reverse Linked List	C++	70.9%	easy	Linked List
201	Bitwise AND of Numbers Range	C++	51.2%	medium	Bit Manipulation
191	Number of 1 Bits	C++	70.3%	easy	Bit Manipulation
188	Best Time to Buy and Sell Stock IV	C++	30.2%	hard	Dynamic Programming
175	Combine Two Tables	SQL	73.6%	easy
174	Dungeon Game	C++	48.1%	hard	Binary Search Dynamic Programming
169	Majority Element	C++	64.9%	easy	Bit Manipulation Array Divide and Conquer
167	Two Sum II - Input array is sorted	C++	56.8%	easy	Array Two Pointers Binary Search
159	Longest Substring with At Most Two Distinct Characters🔒❤️	C++	52.2%	medium	Hash Table Two Pointers String Sliding Window
155	Min Stack	C++	55.6%	easy	Stack Design
154	Find Minimum in Rotated Sorted Array II	C++	50.5%	hard	Array Binary Search
153	Find Minimum in Rotated Sorted Array	C++	51.8%	medium	Array Binary Search
150	Evaluate Reverse Polish Notation	C++	50.6%	medium	Stack
145	Binary Tree Postorder Traversal	C++	73.5%	medium	Stack Tree
144	Binary Tree Preorder Traversal	C++	68.4%	medium	Stack Tree
143	Reorder List	C++	59.6%	medium	Linked List
142	Linked List Cycle II	C++	53.9%	medium	Linked List Two Pointers
141	Linked List Cycle	C++	50.3%	easy	Linked List Two Pointers
140	Word Break II❤️	C++	43.9%	hard	Dynamic Programming Backtracking
139	Word Break	C++	48.4%	medium	Dynamic Programming
137	Single Number II	C++	68.2%	medium	Bit Manipulation
136	Single Number	C++	70.2%	easy	Bit Manipulation Hash Table
133	Clone Graph	C++	65.3%	medium	Depth-first Search Breadth-first Search Graph
130	Surrounded Regions	C++	42.3%	medium	Depth-first Search Breadth-first Search Union Find
129	Sum Root to Leaf Numbers	C++	66.3%	medium	Tree Depth-first Search
127	Word Ladder	C++	45.4%	medium	Breadth-first Search
123	Best Time to Buy and Sell Stock III	C++	46.4%	hard	Array Dynamic Programming
122	Best Time to Buy and Sell Stock II	C++	64.9%	easy	Greedy Array
121	Best Time to Buy and Sell Stock	C++	55.1%	easy	Array Dynamic Programming
120	Triangle	C++	66.8%	medium	Array Dynamic Programming
117	Populating Next Right Pointers in Each Node II	C++	59.0%	medium	Tree Depth-first Search
116	Populating Next Right Pointers in Each Node	C++	67.7%	medium	Tree Depth-first Search Breadth-first Search
114	Flatten Binary Tree to Linked List	C++	71.3%	medium	Tree Depth-first Search
113	Path Sum II	C++	61.1%	medium	Tree Depth-first Search
112	Path Sum	C++	51.4%	easy	Tree Depth-first Search
111	Minimum Depth of Binary Tree	C++	45.0%	easy	Tree Depth-first Search Breadth-first Search
110	Balanced Binary Tree	C++	54.8%	easy	Tree Depth-first Search
109	Convert Sorted List to Binary Search Tree	C++	76.0%	medium	Depth-first Search Linked List
108	Convert Sorted Array to Binary Search Tree	C++	74.4%	easy	Tree Depth-first Search
107	Binary Tree Level Order Traversal II	C++	67.7%	easy	Tree Breadth-first Search
106	Construct Binary Tree from Inorder and Postorder Traversal	C++	70.7%	medium	Tree Depth-first Search Array
105	Construct Binary Tree from Preorder and Inorder Traversal	C++	68.5%	medium	Tree Depth-first Search Array
104	Maximum Depth of Binary Tree	C++	75.3%	easy	Tree Depth-first Search
101	Symmetric Tree	C++	53.1%	easy	Tree Depth-first Search Breadth-first Search
100	Same Tree	C++	60.2%	easy	Tree Depth-first Search
99	Recover Binary Search Tree	C++	62.0%	hard	Tree Depth-first Search
97	Interleaving String	C++	45.5%	hard	String Dynamic Programming
96	Unique Binary Search Trees	C++	69.2%	medium	Tree Dynamic Programming
95	Unique Binary Search Trees II	C++	66.8%	medium	Tree Dynamic Programming
94	Binary Tree Inorder Traversal	C++	74.1%	medium	Stack Tree Hash Table
93	Restore IP Addresses	C++	50.5%	medium	String Backtracking
90	Subsets II	C++	61.4%	medium	Array Backtracking
79	Word Search	C++	43.7%	medium	Array Backtracking
78	Subsets	C C++	79.2%	medium	Bit Manipulation Array Backtracking
77	Combinations	C++	75.9%	medium	Backtracking
75	Sort Colors	C++	56.8%	medium	Sort Array Two Pointers
71	Simplify Path	C++	40.9%	medium	Stack String
70	Climbing Stairs	C++	50.8%	easy	Dynamic Programming
65	Valid Number	C++	21.1%	hard	Math String
64	Minimum Path Sum	C++	67.7%	medium	Array Dynamic Programming
63	Unique Paths II	C++	37.0%	medium	Array Dynamic Programming
62	Unique Paths	C++	62.7%	medium	Array Dynamic Programming
60	Permutation Sequence	C++	51.6%	hard	Math Backtracking
57	Insert Interval	C++	39.8%	hard	Sort Array
54	Spiral Matrix	C++	41.4%	medium	Array
53	Maximum Subarray	C++	52.7%	easy	Array Divide and Conquer Dynamic Programming
52	N-Queens II	C++	82.1%	hard	Backtracking
51	N-Queens❤️	C++	73.3%	hard	Backtracking
50	Pow(x, n)	C++	36.9%	medium	Math Binary Search
47	Permutations II	C++	62.2%	medium	Backtracking
46	Permutations	C++	77.1%	medium	Backtracking
44	Wildcard Matching	C++	31.5%	hard	Greedy String Dynamic Programming Backtracking
43	Multiply Strings	C++	44.5%	medium	Math String
42	Trapping Rain Water❤️	C++	53.0%	hard	Stack Array Two Pointers
40	Combination Sum II	C++	64.5%	medium	Array Backtracking
39	Combination Sum	C++	71.6%	medium	Array Backtracking
37	Sudoku Solver	C++	66.7%	hard	Hash Table Backtracking
35	Search Insert Position	C++	46.8%	easy	Array Binary Search
32	Longest Valid Parentheses	C++	34.0%	hard	String Dynamic Programming
24	Swap Nodes in Pairs	C++	68.4%	medium	Linked List
21	Merge Two Sorted Lists	C++	64.6%	easy	Linked List
20	Valid Parentheses	C++	43.2%	easy	Stack String
19	Remove Nth Node From End of List	C++	40.5%	medium	Linked List Two Pointers
18	4Sum	C++	39.3%	medium	Array Hash Table Two Pointers
17	Letter Combinations of a Phone Number	C++	55.5%	medium	String Backtracking
11	Container With Most Water	C++	64.4%	medium	Array Two Pointers
10	Regular Expression Matching	C++	30.4%	hard	String Dynamic Programming Backtracking
5	Longest Palindromic Substring	C++	32.3%	medium	String Dynamic Programming
3	Longest Substring Without Repeating Characters	C++	35.8%	medium	Hash Table Two Pointers String Sliding Window
2	Add Two Numbers	C++	38.9%	medium	Linked List Math
1	Two Sum	C++	49.7%	easy	Array Hash Table