LeetCode Solutions

This README file was built by script/readme.py

Update Time: Wed Oct 28 16:57:57 2020

Status: 330/1487

Easy: 116/373

Medium: 185/789

Hard: 29/325

Solution Table

#	Title	Difficulty	Solution
0001	Two Sum	Easy	cpp
0002	Add Two Numbers	Medium	cpp
0003	Longest Substring Without Repeating Characters	Medium	cpp
0004	Median of Two Sorted Arrays	Hard	cpp
0005	Longest Palindromic Substring	Medium	cpp
0006	ZigZag Conversion	Medium	cpp
0007	Reverse Integer	Easy	cpp
0008	String to Integer (atoi)	Medium	cpp
0009	Palindrome Number	Easy	cpp
0010	Regular Expression Matching	Hard	cpp
0011	Container With Most Water	Medium	cpp
0012	Integer to Roman	Medium	cpp
0014	Longest Common Prefix	Easy	cpp
0015	3Sum	Medium	cpp
0016	3Sum Closest	Medium	cpp
0017	Letter Combinations of a Phone Number	Medium	cpp
0018	4Sum	Medium	cpp
0019	Remove Nth Node From End of List	Medium	cpp
0020	Valid Parentheses	Easy	cpp
0021	Merge Two Sorted Lists	Easy	cpp
0022	Generate Parentheses	Medium	cpp
0023	Merge k Sorted Lists	Hard	cpp
0024	Swap Nodes in Pairs	Medium	cpp
0025	Reverse Nodes in k-Group	Hard	cpp
0026	Remove Duplicates from Sorted Array	Easy	cpp
0027	Remove Element	Easy	cpp
0029	Divide Two Integers	Medium	cpp
0031	Next Permutation	Medium	cpp
0032	Longest Valid Parentheses	Hard	cpp
0033	Search in Rotated Sorted Array	Medium	cpp
0034	Find First and Last Position of Element in Sorted Array	Medium	cpp
0035	Search Insert Position	Easy	cpp
0038	Count and Say	Easy	cpp
0039	Combination Sum	Medium	cpp
0040	Combination Sum II	Medium	cpp
0041	First Missing Positive	Hard	cpp
0042	Trapping Rain Water	Hard	cpp
0043	Multiply Strings	Medium	cpp
0045	Jump Game II	Hard	cpp
0046	Permutations	Medium	cpp
0047	Permutations II	Medium	cpp
0048	Rotate Image	Medium	cpp
0049	Group Anagrams	Medium	cpp
0050	Pow(x, n)	Medium	cpp
0053	Maximum Subarray	Easy	cpp
0054	Spiral Matrix	Medium	cpp
0055	Jump Game	Medium	cpp
0056	Merge Intervals	Medium	cpp
0058	Length of Last Word	Easy	cpp
0059	Spiral Matrix II	Medium	cpp
0061	Rotate List	Medium	cpp
0062	Unique Paths	Medium	cpp
0063	Unique Paths II	Medium	cpp
0064	Minimum Path Sum	Medium	cpp
0065	Valid Number	Hard	cpp
0066	Plus One	Easy	cpp
0067	Add Binary	Easy	cpp
0069	Sqrt(x)	Easy	cpp
0070	Climbing Stairs	Easy	cpp
0071	Simplify Path	Medium	cpp
0072	Edit Distance	Hard	cpp
0073	Set Matrix Zeroes	Medium	cpp
0075	Sort Colors	Medium	cpp
0076	Minimum Window Substring	Hard	cpp
0078	Subsets	Medium	cpp
0079	Word Search	Medium	cpp
0082	Remove Duplicates from Sorted List II	Medium	cpp
0083	Remove Duplicates from Sorted List	Easy	cpp
0084	Largest Rectangle in Histogram	Hard	cpp
0085	Maximal Rectangle	Hard	cpp
0086	Partition List	Medium	cpp
0087	Scramble String	Hard	cpp
0088	Merge Sorted Array	Easy	cpp
0090	Subsets II	Medium	cpp
0091	Decode Ways	Medium	cpp
0092	Reverse Linked List II	Medium	cpp
0094	Binary Tree Inorder Traversal	Medium	cpp
0095	Unique Binary Search Trees II	Medium	cpp
0096	Unique Binary Search Trees	Medium	cpp
0098	Validate Binary Search Tree	Medium	cpp
0099	Recover Binary Search Tree	Hard	cpp
0101	Symmetric Tree	Easy	cpp
0102	Binary Tree Level Order Traversal	Medium	cpp
0103	Binary Tree Zigzag Level Order Traversal	Medium	cpp
0104	Maximum Depth of Binary Tree	Easy	cpp
0105	Construct Binary Tree from Preorder and Inorder Traversal	Medium	cpp
0107	Binary Tree Level Order Traversal II	Easy	cpp
0108	Convert Sorted Array to Binary Search Tree	Easy	cpp
0109	Convert Sorted List to Binary Search Tree	Medium	cpp
0110	Balanced Binary Tree	Easy	cpp
0111	Minimum Depth of Binary Tree	Easy	cpp
0112	Path Sum	Easy	cpp
0113	Path Sum II	Medium	cpp
0114	Flatten Binary Tree to Linked List	Medium	cpp
0115	Distinct Subsequences	Hard	cpp
0116	Populating Next Right Pointers in Each Node	Medium	cpp
0118	Pascal's Triangle	Easy	cpp
0119	Pascal's Triangle II	Easy	cpp
0120	Triangle	Medium	cpp
0121	Best Time to Buy and Sell Stock	Easy	cpp
0122	Best Time to Buy and Sell Stock II	Easy	cpp
0123	Best Time to Buy and Sell Stock III	Hard	cpp
0124	Binary Tree Maximum Path Sum	Hard	cpp
0125	Valid Palindrome	Easy	cpp
0127	Word Ladder	Medium	cpp
0128	Longest Consecutive Sequence	Hard	cpp
0130	Surrounded Regions	Medium	cpp
0131	Palindrome Partitioning	Medium	cpp
0133	Clone Graph	Medium	cpp
0134	Gas Station	Medium	cpp
0136	Single Number	Easy	cpp
0138	Copy List with Random Pointer	Medium	cpp
0139	Word Break	Medium	cpp
0141	Linked List Cycle	Easy	cpp
0142	Linked List Cycle II	Medium	cpp
0143	Reorder List	Medium	cpp
0144	Binary Tree Preorder Traversal	Medium	cpp
0145	Binary Tree Postorder Traversal	Medium	cpp
0146	LRU Cache	Medium	cpp
0147	Insertion Sort List	Medium	cpp
0148	Sort List	Medium	cpp
0149	Max Points on a Line	Hard	cpp
0150	Evaluate Reverse Polish Notation	Medium	cpp
0151	Reverse Words in a String	Medium	cpp
0152	Maximum Product Subarray	Medium	cpp
0153	Find Minimum in Rotated Sorted Array	Medium	cpp
0154	Find Minimum in Rotated Sorted Array II	Hard	cpp
0155	Min Stack	Easy	cpp
0160	Intersection of Two Linked Lists	Easy	cpp
0162	Find Peak Element	Medium	cpp
0166	Fraction to Recurring Decimal	Medium	cpp
0167	Two Sum II - Input array is sorted	Easy	cpp
0168	Excel Sheet Column Title	Easy	cpp
0171	Excel Sheet Column Number	Easy	cpp
0172	Factorial Trailing Zeroes	Easy	cpp
0173	Binary Search Tree Iterator	Medium	cpp
0179	Largest Number	Medium	cpp
0188	Best Time to Buy and Sell Stock IV	Hard	cpp
0189	Rotate Array	Medium	cpp
0190	Reverse Bits	Easy	cpp
0191	Number of 1 Bits	Easy	cpp
0198	House Robber	Easy	cpp
0200	Number of Islands	Medium	cpp
0203	Remove Linked List Elements	Easy	cpp
0205	Isomorphic Strings	Easy	cpp
0206	Reverse Linked List	Easy	cpp
0207	Course Schedule	Medium	cpp
0208	Implement Trie (Prefix Tree)	Medium	cpp
0210	Course Schedule II	Medium	cpp
0213	House Robber II	Medium	cpp
0215	Kth Largest Element in an Array	Medium	cpp
0217	Contains Duplicate	Easy	cpp
0219	Contains Duplicate II	Easy	cpp
0220	Contains Duplicate III	Medium	cpp
0221	Maximal Square	Medium	cpp
0224	Basic Calculator	Hard	cpp
0225	Implement Stack using Queues	Easy	cpp
0226	Invert Binary Tree	Easy	cpp
0232	Implement Queue using Stacks	Easy	cpp
0234	Palindrome Linked List	Easy	cpp
0236	Lowest Common Ancestor of a Binary Tree	Medium	cpp
0237	Delete Node in a Linked List	Easy	cpp
0238	Product of Array Except Self	Medium	cpp
0239	Sliding Window Maximum	Hard	cpp
0240	Search a 2D Matrix II	Medium	cpp
0252	Meeting Rooms	Easy	cpp
0253	Meeting Rooms II	Medium	cpp
0257	Binary Tree Paths	Easy	cpp
0268	Missing Number	Easy	cpp
0274	H-Index	Medium	cpp
0278	First Bad Version	Easy	cpp
0279	Perfect Squares	Medium	cpp
0280	Wiggle Sort	Medium	cpp
0287	Find the Duplicate Number	Medium	cpp
0289	Game of Life	Medium	cpp
0290	Word Pattern	Easy	cpp
0295	Find Median from Data Stream	Hard	cpp
0297	Serialize and Deserialize Binary Tree	Hard	cpp
0299	Bulls and Cows	Medium	cpp
0300	Longest Increasing Subsequence	Medium	cpp
0301	Remove Invalid Parentheses	Hard	cpp
0304	Range Sum Query 2D - Immutable	Medium	cpp
0309	Best Time to Buy and Sell Stock with Cooldown	Medium	cpp
0310	Minimum Height Trees	Medium	cpp
0312	Burst Balloons	Hard	cpp
0322	Coin Change	Medium	cpp
0324	Wiggle Sort II	Medium	cpp
0326	Power of Three	Easy	cpp
0328	Odd Even Linked List	Medium	cpp
0331	Verify Preorder Serialization of a Binary Tree	Medium	cpp
0332	Reconstruct Itinerary	Medium	cpp
0337	House Robber III	Medium	cpp
0338	Counting Bits	Medium	cpp
0341	Flatten Nested List Iterator	Medium	cpp
0342	Power of Four	Easy	cpp
0343	Integer Break	Medium	cpp
0344	Reverse String	Easy	cpp
0345	Reverse Vowels of a String	Easy	cpp
0347	Top K Frequent Elements	Medium	cpp
0367	Valid Perfect Square	Easy	cpp
0369	Plus One Linked List	Medium	cpp
0374	Guess Number Higher or Lower	Easy	cpp
0376	Wiggle Subsequence	Medium	cpp
0377	Combination Sum IV	Medium	cpp
0383	Ransom Note	Easy	cpp
0385	Mini Parser	Medium	cpp
0387	First Unique Character in a String	Easy	cpp
0389	Find the Difference	Easy	cpp
0392	Is Subsequence	Easy	cpp
0394	Decode String	Medium	cpp
0399	Evaluate Division	Medium	cpp
0401	Binary Watch	Easy	cpp
0402	Remove K Digits	Medium	cpp
0404	Sum of Left Leaves	Easy	cpp
0405	Convert a Number to Hexadecimal	Easy	cpp
0406	Queue Reconstruction by Height	Medium	cpp
0409	Longest Palindrome	Easy	cpp
0412	Fizz Buzz	Easy	cpp
0414	Third Maximum Number	Easy	cpp
0415	Add Strings	Easy	cpp
0416	Partition Equal Subset Sum	Medium	cpp
0426	Convert Binary Search Tree to Sorted Doubly Linked List	Medium	cpp
0430	Flatten a Multilevel Doubly Linked List	Medium	cpp
0434	Number of Segments in a String	Easy	cpp
0435	Non-overlapping Intervals	Medium	cpp
0437	Path Sum III	Medium	cpp
0438	Find All Anagrams in a String	Medium	cpp
0441	Arranging Coins	Easy	cpp
0443	String Compression	Medium	cpp
0445	Add Two Numbers II	Medium	cpp
0447	Number of Boomerangs	Easy	cpp
0448	Find All Numbers Disappeared in an Array	Easy	cpp
0452	Minimum Number of Arrows to Burst Balloons	Medium	cpp
0453	Minimum Moves to Equal Array Elements	Easy	cpp
0455	Assign Cookies	Easy	cpp
0456	132 Pattern	Medium	cpp
0459	Repeated Substring Pattern	Easy	cpp
0463	Island Perimeter	Easy	cpp
0474	Ones and Zeroes	Medium	cpp
0476	Number Complement	Easy	cpp
0482	License Key Formatting	Easy	cpp
0485	Max Consecutive Ones	Easy	cpp
0492	Construct the Rectangle	Easy	cpp
0494	Target Sum	Medium	cpp
0496	Next Greater Element I	Easy	cpp
0500	Keyboard Row	Easy	cpp
0501	Find Mode in Binary Search Tree	Easy	cpp
0503	Next Greater Element II	Medium	cpp
0504	Base 7	Easy	cpp
0506	Relative Ranks	Easy	cpp
0507	Perfect Number	Easy	cpp
0509	Fibonacci Number	Easy	cpp
0516	Longest Palindromic Subsequence	Medium	cpp
0520	Detect Capital	Easy	cpp
0521	Longest Uncommon Subsequence I	Easy	cpp
0524	Longest Word in Dictionary through Deleting	Medium	cpp
0530	Minimum Absolute Difference in BST	Easy	cpp
0532	K-diff Pairs in an Array	Medium	cpp
0538	Convert BST to Greater Tree	Medium	cpp
0541	Reverse String II	Easy	cpp
0543	Diameter of Binary Tree	Easy	cpp
0551	Student Attendance Record I	Easy	cpp
0556	Next Greater Element III	Medium	cpp
0557	Reverse Words in a String III	Easy	cpp
0560	Subarray Sum Equals K	Medium	cpp
0581	Shortest Unsorted Continuous Subarray	Medium	cpp
0617	Merge Two Binary Trees	Easy	cpp
0621	Task Scheduler	Medium	cpp
0636	Exclusive Time of Functions	Medium	cpp
0647	Palindromic Substrings	Medium	cpp
0649	Dota2 Senate	Medium	cpp
0650	2 Keys Keyboard	Medium	cpp
0659	Split Array into Consecutive Subsequences	Medium	cpp
0682	Baseball Game	Easy	cpp
0688	Knight Probability in Chessboard	Medium	cpp
0707	Design Linked List	Medium	cpp
0714	Best Time to Buy and Sell Stock with Transaction Fee	Medium	cpp
0725	Split Linked List in Parts	Medium	cpp
0735	Asteroid Collision	Medium	cpp
0738	Monotone Increasing Digits	Medium	cpp
0739	Daily Temperatures	Medium	cpp
0746	Min Cost Climbing Stairs	Easy	cpp
0763	Partition Labels	Medium	cpp
0767	Reorganize String	Medium	cpp
0817	Linked List Components	Medium	cpp
0842	Split Array into Fibonacci Sequence	Medium	cpp
0853	Car Fleet	Medium	cpp
0860	Lemonade Change	Easy	cpp
0861	Score After Flipping Matrix	Medium	cpp
0870	Advantage Shuffle	Medium	cpp
0874	Walking Robot Simulation	Easy	cpp
0876	Middle of the Linked List	Easy	cpp
0883	Projection Area of 3D Shapes	Easy	cpp
0884	Uncommon Words from Two Sentences	Easy	cpp
0885	Spiral Matrix III	Medium	cpp
0901	Online Stock Span	Medium	cpp
0910	Smallest Range II	Medium	cpp
0913	Cat and Mouse	Hard	cpp
0914	X of a Kind in a Deck of Cards	Easy	cpp
0915	Partition Array into Disjoint Intervals	Medium	cpp
0916	Word Subsets	Medium	cpp
0921	Minimum Add to Make Parentheses Valid	Medium	cpp
0922	Sort Array By Parity II	Easy	cpp
0931	Minimum Falling Path Sum	Medium	cpp
0935	Knight Dialer	Medium	cpp
0944	Delete Columns to Make Sorted	Easy	cpp
0946	Validate Stack Sequences	Medium	cpp
0969	Pancake Sorting	Medium	cpp
0973	K Closest Points to Origin	Medium	cpp
0976	Largest Perimeter Triangle	Easy	cpp
0983	Minimum Cost For Tickets	Medium	cpp
1019	Next Greater Node In Linked List	Medium	cpp
1030	Matrix Cells in Distance Order	Easy	cpp
1049	Last Stone Weight II	Medium	cpp
1054	Distant Barcodes	Medium	cpp
1122	Relative Sort Array	Easy	cpp
1143	Longest Common Subsequence	Medium	cpp
1155	Number of Dice Rolls With Target Sum	Medium	cpp
1171	Remove Zero Sum Consecutive Nodes from Linked List	Medium	cpp
1223	Dice Roll Simulation	Medium	cpp
1290	Convert Binary Number in a Linked List to Integer	Easy	cpp
1305	All Elements in Two Binary Search Trees	Medium	cpp
1306	Jump Game III	Medium	cpp
1329	Sort the Matrix Diagonally	Medium	cpp
1333	Filter Restaurants by Vegan-Friendly, Price and Distance	Medium	cpp
1353	Maximum Number of Events That Can Be Attended	Medium	cpp
1356	Sort Integers by The Number of 1 Bits	Easy	cpp
1366	Rank Teams by Votes	Medium	cpp
1367	Linked List in Binary Tree	Medium	cpp
1370	Increasing Decreasing String	Easy	cpp