🔥 Leetcode 🔥

Practice make Perfect

• 🎉 Unit test with jest
• ✨ Simple code
• 🎨 Readable code

Getting Start

git clone https://github.com/tangweikun/leetcode.git
cd leetcode
npm install
npm run test // also you can run `npm run watch`

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Contents

#	Title	README	Difficulty	LeetCode	TAGS
1	compare-version-numbers	📗	Easy	LeetCode	String
2	TODO:	📗	Easy
3	TODO:	📗	Easy
4	length-of-last-word	📗	Easy	LeetCode	String
5	baseball-game	📗	Easy	LeetCode	Stack
6	132-pattern	📗	Medium	LeetCode	Stack
7	LongestCommonPrefix	📗	Easy	LeetCode	String
8	longest-substring-without-repeating-characters	📗	Easy	LeetCode	String
9	TODO:	📗	Easy
10	min-stack	📗	Medium	LeetCode
11	PalindromeNumber	📗	Easy		Math
12	PrimeNumber	📗	Easy
13	SearchInsertPosition	📗	Easy	LeetCode	BinarySearch
14	JudgeRouteCircle	📗	Easy	LeetCode	String
15	SwapPosition	📗	Easy
16	UnionList	📗	Easy
17	ValidParentheses	📗	Easy	LeetCode
18	IsPowerOf2	📗	Easy	LeetCode
19	BitCount	📗	Easy
20	MissingInteger	📗	Easy
21	OddTimes	📗	Easy
22	GreatestCommonDivisor	📗	Easy
23	ClimbingStairs	📗	Easy	LeetCode
24	RemoveElement	📗	Easy	LeetCode	Array
25	ImplementStr	📗	Easy	LeetCode	String
26	LargestNumberAtLeastTwiceOfOthers	📗	Easy	LeetCode	Array
27	Pow	📗	Easy		Math
28	MinQueue	📗	Medium
29	RemoveDuplicates	📗	Easy	LeetCode	Two Pointer
30	RomanToInteger	📗	Easy	LeetCode	Math
31	MaximumSubArray	📗	Easy	LeetCode	Array
32	PlusOne	📗	Easy	LeetCode	Math
33	AddBinary	📗	Easy	LeetCode	Math
34	Sqrt	📗	Easy	LeetCode	Math
35	MergeSortedArray	📗	Easy	LeetCode	Array
36	CountAndSay	📗	Easy	LeetCode	String
37	BestTimeToBuyAndSellStock	📗	Easy	LeetCode	Array
38	BestTimeToBuyAndSellStock2	📗	Easy	LeetCode	Array
39	ValidPalindrome	📗	Easy	LeetCode
40	SingleNumber	📗	Easy	LeetCode
41	TwoSum2	📗	Easy	LeetCode	Array
42	RotateArray	📗	Easy	LeetCode	Array
43	ReverseBits	📗	Easy	LeetCode
44	AsteroidCollision	📗	Medium	LeetCode	Stack
45	FractionalSimplify	📗	Easy
46	FractionCalculate	📗	Easy
47	HammingWeight	📗	Easy	LeetCode
48	HappyNumber	📗	Easy	LeetCode	Math
49	FizzBuzz	📗	Easy	LeetCode
50	HammingDistance	📗	Easy	LeetCode
51	IntersectionOfTwoArrays	📗	Easy	LeetCode
52	IntersectionOfTwoArrays2	📗	Easy	LeetCode
53	IslandPerimeter	📗	Easy	LeetCode
54	KeyboardRow	📗	Easy	LeetCode
55	LongestPalindrome	📗	Easy	LeetCode
56	LongestContinuousIncreasingSubsequence	📗	Easy	LeetCode	Array
57	LongestHarmoniousSubsequence	📗	Easy	LeetCode
58	FirstUniqueCharacterInAString	📗	Easy	LeetCode	String
59	FindTheDifference	📗	Easy	LeetCode
60	AddDigits	📗	Easy	LeetCode	Math
61	AddStrings	📗	Easy	LeetCode	Math
62	ArrayPosition1	📗	Easy	LeetCode	Array
63	ArrangingCoins	📗	Easy	LeetCode	Math
64	ContainsDuplicate	📗	Easy	LeetCode	Array
65	ContainsDuplicate2	📗	Easy	LeetCode	Array
66	CountBinarySubstrings	📗	Easy	LeetCode	String
67	DetectCapital	📗	Easy	LeetCode	String
68	DistributeCandies	📗	Easy	LeetCode
69	CountPrimes	📗	Easy	LeetCode	Math
70	Base7	📗	Easy	LeetCode
71	PowerOfThree	📗	Easy	LeetCode	Math
72	PowerOfFour	📗	Easy	LeetCode	math
73	NumberOfSegmentsInAString	📗	Easy	LeetCode	String
74	ReverseString	📗	Easy	LeetCode
75	ReverseString2	📗	Easy	LeetCode
76	ReverseWordsInAString3	📗	Easy	LeetCode
77	ReverseVowelsOfAString	📗	Easy	LeetCode
78	UglyNumber	📗	Easy	LeetCode	Math
79	ValidAnagram	📗	Easy	LeetCode
80	ValidPalindrome2	📗	Easy	LeetCode
81	WordPattern	📗	Easy	LeetCode
82	BinaryNumberWithAlternatingBits	📗	Easy	LeetCode
83	FindAllAnagramsInAString	📗	Easy	LeetCode
84	FactorialTrailingZeroes	📗	Easy	LeetCode	Math
85	FindSmallestLetterGreaterThanTarget	📗	Easy	LeetCode
86	FindPivotIndex	📗	Easy	LeetCode	Array
87	LicenseKeyFormatting	📗	Easy	LeetCode
88	LongestUncommonSubsequence1	📗	Easy	LeetCode	String
89	MajorityElement	📗	Easy	LeetCode	Array
90	PerfectNumber	📗	Easy	LeetCode	Math
91	PrimeNumberOfSetBitsInBinaryRepresentation	📗	Easy	LeetCode
92	NumberComplement	📗	Easy	LeetCode
93	MoveZeroes	📗	Easy	LeetCode	Array
94	RelativeRanks	📗	Easy	LeetCode
95	ValidPerfectSquare	📗	Easy	LeetCode	Math
96	StringCompression	📗	Easy	LeetCode
97	studentAttendanceRecord1	📗	Easy	LeetCode
98	MaxConsecutiveOnes	📗	Easy	LeetCode	Array
99	MaximumAverageSubarray	📗	Easy	LeetCode	Array
100	MinimumIndexSumOfTwoLists	📗	Easy	LeetCode
101	SumOfSquareNumbers	📗	Easy	LeetCode	Math
102	SetMismatch	📗	Easy	LeetCode	Math
103	FindTheDuplicateNumber	📗	Medium	LeetCode	Math
104	SelfDividingNumbers	📗	Easy	LeetCode	Math
105	MissingNumber	📗	Easy	LeetCode	Math
106	MaximumProductOfThreeNumbers	📗	Easy	LeetCode	Math
107	ComplexNumberMultiplication	📗	Medium	LeetCode	Math
108	UglyNumber2	📗	Medium	LeetCode	Math, DP
109	ValidSquare	📗	Medium	LeetCode	Math
110	1-bit-and-2-bit-characters	📗	Easy	LeetCode	Array
111	CanPlaceFlowers	📗	Easy	LeetCode	Array
112	FindAllNumbersDisappearedInAnArray	📗	Easy	LeetCode	Array
113	ContainerWithMostWater	📗	Medium	LeetCode	Array
114	DegreeOfAnArray	📗	Easy	LeetCode	Array
115	FindAllDuplicatesInAnArray	📗	Easy	LeetCode	Array
116	FindMinimumInRotatedSortedArray	📗	Easy	LeetCode	Array
117	FindMinimumInRotatedSortedArray2	📗	Easy	LeetCode	Array
118	FindPeakElement	📗	Medium	LeetCode	Array
119	JumpGame	📗	Medium	LeetCode	DP
120	JumpGame2	📗	Hard	LeetCode	DP
121	MaxChunksToMakeSorted	📗	Medium	LeetCode	Array
122	maximumSwap	📗	Medium	LeetCode	Array
123	MinCostClimbingStairs	📗	Medium	LeetCode	DP
124	MinimumSizeSubarraySum	📗	Medium	LeetCode	Array
125	RemoveDuplicatesFromSortedArray2	📗	Medium	LeetCode	Array
126	SearchForARange	📗	Medium	LeetCode	Array
127	SubarrayProductLessThanK	📗	Medium	LeetCode	Array
128	DailyTemperatures	📗	Medium	LeetCode	Stack
129	SumOfTwoIntegers	📗	Easy	LeetCode	Bit
130	JewelsAndStones	📗	Easy	LeetCode	HashTable
131	NumberOfBoomerangs	📗	Easy	LeetCode	HashTable
132	IsomorphicStrings	📗	Easy	LeetCode	HashTable
133	CountingBits	📗	Easy	LeetCode	Bit
134	ValidTriangleNumber	📗	Medium	LeetCode	Array
135	RepeatedSubstringPattern	📗	Easy	LeetCode	String
136	MaximumDepthOfBinaryTree	📗	Easy	LeetCode	BinaryTree
137	MergeTwoBinaryTrees	📗	Easy	LeetCode	BinaryTree
138	AverageOfLevelsInBinaryTree	📗	Easy	LeetCode	BinaryTree
139	FindDuplicateSubtrees	📗	Medium	LeetCode	BinaryTree
140	MinimumWindowSubstring	📗	Hard	LeetCode	String
141	InvertBinaryTree	📗	Easy	LeetCode	BinaryTree
142	TwoSum4	📗	Easy	LeetCode	BinaryTree
143	SameTree	📗	Easy	LeetCode	BinaryTree
144	SumOfLeftLeaves	📗	Easy	LeetCode	BinaryTree
145	TrimABinarySearchTree	📗	Easy	LeetCode	BinaryTree
146	ToeplitzMatrix	📗	Easy	LeetCode	Array
147	ReshaphTeMatrix	📗	Easy	LeetCode	Array
148	NextGreaterElement	📗	Easy	LeetCode	Array
149	NimGame	📗	Easy	LeetCode	BrainTeaser
150	RotatedDigits	📗	Easy	LeetCode	String
151	ExcelSheetColumnNumber	📗	Easy	LeetCode	Math
152	RansomNote	📗	Easy	LeetCode	String
153	K-diffPairsInAnArray	📗	Easy	LeetCode	Array
154	ThirdMaximumNumber	📗	Easy	LeetCode	Array
155	SingleElementInASortedArray	📗	Medium	LeetCode	Array
156	SingleNumber3	📗	Medium	LeetCode	Array
157	ArithmeticSlices	📗	Medium	LeetCode	Math,DP
158	PalindromicSubstrings	📗	Medium	LeetCode	String,DP
159	MaximumXOROfTwoNumbersInAnArray	📗	Medium	LeetCode	Bit
160	SortCharactersByFrequency	📗	Medium	LeetCode	HashTable
161	RotateString	📗	Medium	LeetCode	String
162	ProductOfArrayExceptSelf	📗	Medium	LeetCode	Array
163	TeemoAttacking	📗	Medium	LeetCode	Array
164	QueueReconstructionByHeight	📗	Medium	LeetCode	Greedy
165	4sum-ii	📗	Medium	LeetCode	HashTable
166	01-matrix	📗	Medium	LeetCode	HashTable
167	3sum	📗	Medium	LeetCode	TwoPointers
168	3sum-closest	📗	Medium	LeetCode	TwoPointers
169	4Sum	📗	Medium	LeetCode	TwoPointers
170	AddTwoNumbers	📗	Medium	LeetCode	LinkedList
171	AddTwoNumbers2	📗	Medium	LeetCode	LinkedList
172	AddAndSearchWordDataStructureDesign	📗	Medium	LeetCode	LinkedList
173	AdditiveNumber	📗	Medium	LeetCode	String
174	AssignCookies	📗	Easy	LeetCode	Greedy
175	BasicCalculator	📗	Medium	LeetCode	Stack
176	BasicCalculator2	📗	Medium	LeetCode	Stack
177	TargetSum	📗	Medium	LeetCode	DP
178	ImplementQueueUsingStacks	📗	Easy	LeetCode	Stack
179	ImplementStackUsingQueues	📗	Easy	LeetCode	Stack
180	NextGreaterElement2	📗	Medium	LeetCode	Stack
181	BinaryTreeTilt	📗	Easy	LeetCode	Tree
182	DiameterOfBinaryTree	📗	Easy	LeetCode	Tree
183	SymmetricTree	📗	Easy	LeetCode	Tree
184	SecondMinimumNodeInABinaryTree	📗	Easy	LeetCode	Tree
185	SubTreeOfAnotherTree	📗	Easy	LeetCode	Tree
186	BinaryTreePaths	📗	Easy	LeetCode	DFS
187	PathSum	📗	Easy	LeetCode	DFS
188	MinimumDepthOfBinaryTree	📗	Easy	LeetCode	DFS
189	FindBottomLeftTreeValue	📗	Medium	LeetCode	DFS
190	DecodeString	📗	Medium	LeetCode	DFS,Stack
191	FindLargestvalueInEachTreeRow	📗	Medium	LeetCode	DFS
192	MaxAreaOfIsLand	📗	Easy	LeetCode	DFS
193	FloodFill	📗	Easy	LeetCode	DFS
194	BalancedBinaryTree	📗	Easy	LeetCode	DFS
195	FriendCircles	📗	Medium	LeetCode	DFS
196	HouseRobber3	📗	Medium	LeetCode	DFS
197	IncreasingSubsequences	📗	Medium	LeetCode	DFS
198	SumRootToLeafNumbers	📗	Medium	LeetCode	DFS
199	NumberOfIsLands	📗	Medium	LeetCode	DFS
200	PathSum2	📗	Medium	LeetCode	DFS
201	MatchsticksToSquare	📗	Medium	LeetCode	DFS
202	TwoSum	📗	Easy	LeetCode	Array
203	UniqueMorseCodeWords	📗	Easy	LeetCode	Hash
204	ImageSmoother	📗	Easy	LeetCode	Array
205	PascalsTriangle	📗	Easy	LeetCode	Array
206	PascalsTriangle2	📗	Easy	LeetCode	Array
207	ShortestUnsortedContinuousSubarray	📗	Easy	LeetCode	Array
208	Non-decreasingArray	📗	Easy	LeetCode	Array
209	RangeAddition2	📗	Easy	LeetCode	Math
210	RepeatedStringMatch	📗	Easy	LeetCode	Math
211	HouseRobber	📗	Easy	LeetCode	DP
212	MinimumASCIIDeleteSumForTwoStrings	📗	Medium	LeetCode	DP
213	Maximum Length of Pair Chain	📗	Medium	LeetCode	DP,Greedy
214	IntegerBreak	📗	Medium	LeetCode	DP
215	CountNumbersWithUniqueDigits	📗	Medium	LeetCode	DP
216	BestTimetoBuyAndSellStockWithTransactionFee	📗	Medium	LeetCode	DP,Greedy
217	ShoppingOffers	📗	Medium	LeetCode	DP,DFS
218	PredictTheWinner	📗	Medium	LeetCode	DP
219	2-keys-keyboard	📗	Medium	LeetCode	DP
220	IsSubsequence	📗	Medium	LeetCode	DP
221	delete-and-earn	📗	Medium	LeetCode	DP
222	longest-palindromic-subsequence	📗	Medium	LeetCode	DP
223	combination-sum-iv	📗	Medium	LeetCode	DP
224	maximum-length-of-repeated-subarray	📗	Medium	LeetCode	DP
225	minimum-path-sum	📗	Medium	LeetCode	DP
226	largest-sum-of-averages	📗	Medium	LeetCode	DP
227	longest-increasing-subsequence	📗	Medium	LeetCode	DP

Collaborators

_{weikun tang}