Leetcode solutions

Update time: 2019-09-23 15:59:27

I have solved 114 / 1116 problems

NO.	Title	Solutions	Note	Difficulty
1	Two Sum	Cpp Python	None	Easy
2	Add Two Numbers	Python3 Cpp	None	Medium
4	Median of Two Sorted Arrays	Cpp	None	Hard
5	Longest Palindromic Substring	Cpp	None	Medium
7	Reverse Integer	Cpp	None	Easy
8	String to Integer (atoi)	Cpp	None	Medium
9	Palindrome Number	Cpp	None	Easy
11	Container With Most Water	Cpp	None	Medium
13	Roman to Integer	Python3 Cpp	None	Easy
14	Longest Common Prefix	Cpp	None	Easy
15	3Sum	Cpp	None	Medium
19	Remove Nth Node From End of List	Cpp	None	Medium
20	Valid Parentheses	Cpp	None	Easy
21	Merge Two Sorted Lists	Python3 Cpp	None	Easy
23	Merge k Sorted Lists	Cpp	None	Hard
26	Remove Duplicates from Sorted Array	Python Cpp	None	Easy
27	Remove Element	Python Cpp	None	Easy
28	Implement strStr()	Python3 Cpp	None	Easy
33	Search in Rotated Sorted Array	Cpp	None	Medium
34	Find First and Last Position of Element in Sorted Array	Cpp	None	Medium
35	Search Insert Position	Cpp Python3	None	Easy
42	Trapping Rain Water	Cpp	None	Hard
50	Pow(x, n)	Cpp	None	Medium
53	Maximum Subarray	Cpp	None	Easy
54	Spiral Matrix	Cpp	None	Medium
56	Merge Intervals	Cpp	None	Medium
58	Length of Last Word	Cpp	None	Easy
62	Unique Paths	Cpp	None	Medium
64	Minimum Path Sum	Cpp	None	Medium
67	Add Binary	Cpp	None	Easy
69	Sqrt(x)	Cpp	None	Easy
70	Climbing Stairs	Cpp	None	Easy
78	Subsets	Cpp	None	Medium
81	Search in Rotated Sorted Array II	Cpp	None	Medium
83	Remove Duplicates from Sorted List	Python3 Cpp	None	Easy
88	Merge Sorted Array	Cpp	None	Easy
96	Unique Binary Search Trees	Cpp	None	Medium
100	Same Tree	Cpp	None	Easy
101	Symmetric Tree	Cpp	None	Easy
104	Maximum Depth of Binary Tree	Cpp	None	Easy
110	Balanced Binary Tree	Cpp	None	Easy
111	Minimum Depth of Binary Tree	Cpp	None	Easy
112	Path Sum	Cpp	None	Easy
113	Path Sum II	Cpp	None	Medium
118	Pascal's Triangle	Cpp	None	Easy
121	Best Time to Buy and Sell Stock	Cpp	None	Easy
122	Best Time to Buy and Sell Stock II	Cpp	None	Easy
123	Best Time to Buy and Sell Stock III	Cpp	None	Hard
125	Valid Palindrome	Cpp	None	Easy
136	Single Number	Cpp	None	Easy
137	Single Number II	Cpp	None	Medium
141	Linked List Cycle	Cpp	None	Easy
142	Linked List Cycle II	Cpp	None	Medium
146	LRU Cache	Cpp	None	Medium
153	Find Minimum in Rotated Sorted Array	Cpp	None	Medium
154	Find Minimum in Rotated Sorted Array II	Cpp	None	Hard
155	Min Stack	Cpp	None	Easy
160	Intersection of Two Linked Lists	Cpp	None	Easy
162	Find Peak Element	Cpp	None	Medium
167	Two Sum II - Input array is sorted	Cpp	None	Easy
168	Excel Sheet Column Title	Cpp	None	Easy
169	Majority Element	Cpp	None	Easy
171	Excel Sheet Column Number	Cpp	None	Easy
172	Factorial Trailing Zeroes	Cpp	None	Easy
188	Best Time to Buy and Sell Stock IV	Cpp	None	Hard
189	Rotate Array	Cpp	None	Easy
190	Reverse Bits	Cpp	None	Easy
191	Number of 1 Bits	Cpp	None	Easy
202	Happy Number	Cpp	None	Easy
203	Remove Linked List Elements	Cpp	None	Easy
206	Reverse Linked List	Cpp	None	Easy
215	Kth Largest Element in an Array	Cpp	None	Medium
217	Contains Duplicate	Python3 Cpp	None	Easy
231	Power of Two	Cpp	None	Easy
234	Palindrome Linked List	Cpp	None	Easy
237	Delete Node in a Linked List	Cpp	None	Easy
242	Valid Anagram	Cpp	None	Easy
258	Add Digits	Cpp	None	Easy
278	First Bad Version	Cpp	None	Easy
287	Find the Duplicate Number	Cpp	None	Medium
292	Nim Game	Cpp	None	Easy
295	Find Median from Data Stream	Cpp	None	Hard
322	Coin Change	Cpp	None	Medium
344	Reverse String	Cpp	None	Easy
349	Intersection of Two Arrays	Cpp	None	Easy
350	Intersection of Two Arrays II	Cpp	None	Easy
371	Sum of Two Integers	Cpp	None	Easy
392	Is Subsequence	Cpp	None	Easy
404	Sum of Left Leaves	Cpp	None	Easy
412	Fizz Buzz	Cpp	None	Easy
414	Third Maximum Number	Cpp	None	Easy
415	Add Strings	Cpp	None	Easy
416	Partition Equal Subset Sum	Cpp	None	Medium
421	Maximum XOR of Two Numbers in an Array	Cpp	None	Medium
434	Number of Segments in a String	Cpp	None	Easy
441	Arranging Coins	Python3 Cpp	None	Easy
460	LFU Cache	Cpp	None	Hard
461	Hamming Distance	Cpp	None	Easy
520	Detect Capital	Cpp	None	Easy
633	Sum of Square Numbers	Cpp	None	Easy
704	Binary Search	Cpp	None	Easy
705	Design HashSet	Cpp	None	Easy
706	Design HashMap	Cpp	None	Easy
707	Design Linked List	Cpp	None	Easy
709	To Lower Case	Cpp	None	Easy
744	Find Smallest Letter Greater Than Target	Cpp	None	Easy
771	Jewels and Stones	Cpp	None	Easy
804	Unique Morse Code Words	Cpp	None	Easy
819	Most Common Word	Cpp	None	Easy
844	Backspace String Compare	Cpp	None	Easy
852	Peak Index in a Mountain Array	Cpp	None	Easy
867	Transpose Matrix	Cpp	None	Easy
922	Sort Array By Parity II	Cpp	None	Easy
1122	Relative Sort Array	Cpp	None	Easy

Name		Name	Last commit message	Last commit date
001. Two Sum		001. Two Sum
002. Add Two Numbers		002. Add Two Numbers
004. Median of Two Sorted Arrays		004. Median of Two Sorted Arrays
005. Longest Palindromic Substring		005. Longest Palindromic Substring
007. Reverse Integer		007. Reverse Integer
008. String to Integer (atoi)		008. String to Integer (atoi)
009. Palindrome Number		009. Palindrome Number
011. Container With Most Water		011. Container With Most Water
013. Roman to Integer		013. Roman to Integer
014. Longest Common Prefix		014. Longest Common Prefix
015. 3Sum		015. 3Sum
019. Remove Nth Node From End of List		019. Remove Nth Node From End of List
020. Valid Parentheses		020. Valid Parentheses
021. Merge Two Sorted Lists		021. Merge Two Sorted Lists
023. Merge k Sorted Lists		023. Merge k Sorted Lists
026. Remove Duplicates from Sorted Array		026. Remove Duplicates from Sorted Array
027. Remove Element		027. Remove Element
028. Implement strStr()		028. Implement strStr()
033. Search in Rotated Sorted Array		033. Search in Rotated Sorted Array
034. Find First and Last Position of Element in Sorted Array		034. Find First and Last Position of Element in Sorted Array
035. Search Insert Position		035. Search Insert Position
042. Trapping Rain Water		042. Trapping Rain Water
050. Pow(x, n)		050. Pow(x, n)
053. Maximum Subarray		053. Maximum Subarray
054. Spiral Matrix		054. Spiral Matrix
056. Merge Intervals		056. Merge Intervals
058. Length of Last Word		058. Length of Last Word
062. Unique Paths		062. Unique Paths
064. Minimum Path Sum		064. Minimum Path Sum
067. Add Binary		067. Add Binary
069. Sqrt(x)		069. Sqrt(x)
070. Climbing Stairs		070. Climbing Stairs
078. Subsets		078. Subsets
081. Search in Rotated Sorted Array II		081. Search in Rotated Sorted Array II
083. Remove Duplicates from Sorted List		083. Remove Duplicates from Sorted List
088. Merge Sorted Array		088. Merge Sorted Array
096. Unique Binary Search Trees		096. Unique Binary Search Trees
100. Same Tree		100. Same Tree
101. Symmetric Tree		101. Symmetric Tree
104. Maximum Depth of Binary Tree		104. Maximum Depth of Binary Tree
110. Balanced Binary Tree		110. Balanced Binary Tree
111. Minimum Depth of Binary Tree		111. Minimum Depth of Binary Tree
112. Path Sum		112. Path Sum
1122. Relative Sort Array		1122. Relative Sort Array
113. Path Sum II		113. Path Sum II
118. Pascal's Triangle		118. Pascal's Triangle
121. Best Time to Buy and Sell Stock		121. Best Time to Buy and Sell Stock
122. Best Time to Buy and Sell Stock II		122. Best Time to Buy and Sell Stock II
123. Best Time to Buy and Sell Stock III		123. Best Time to Buy and Sell Stock III
125. Valid Palindrome		125. Valid Palindrome
136. Single Number		136. Single Number
137. Single Number II		137. Single Number II
141. Linked List Cycle		141. Linked List Cycle
142. Linked List Cycle II		142. Linked List Cycle II
146. LRU Cache		146. LRU Cache
153. Find Minimum in Rotated Sorted Array		153. Find Minimum in Rotated Sorted Array
154. Find Minimum in Rotated Sorted Array II		154. Find Minimum in Rotated Sorted Array II
155. Min Stack		155. Min Stack
160. Intersection of Two Linked Lists		160. Intersection of Two Linked Lists
162. Find Peak Element		162. Find Peak Element
167. Two Sum II - Input array is sorted		167. Two Sum II - Input array is sorted
168. Excel Sheet Column Title		168. Excel Sheet Column Title
169. Majority Element		169. Majority Element
171. Excel Sheet Column Number		171. Excel Sheet Column Number
172. Factorial Trailing Zeroes		172. Factorial Trailing Zeroes
188. Best Time to Buy and Sell Stock IV		188. Best Time to Buy and Sell Stock IV
189. Rotate Array		189. Rotate Array
190. Reverse Bits		190. Reverse Bits
191. Number of 1 Bits		191. Number of 1 Bits
202. Happy Number		202. Happy Number
203. Remove Linked List Elements		203. Remove Linked List Elements
206. Reverse Linked List		206. Reverse Linked List
215. Kth Largest Element in an Array		215. Kth Largest Element in an Array
217. Contains Duplicate		217. Contains Duplicate
231. Power of Two		231. Power of Two
234. Palindrome Linked List		234. Palindrome Linked List
237. Delete Node in a Linked List		237. Delete Node in a Linked List
242. Valid Anagram		242. Valid Anagram
258. Add Digits		258. Add Digits
278. First Bad Version		278. First Bad Version
287. Find the Duplicate Number		287. Find the Duplicate Number
292. Nim Game		292. Nim Game
295. Find Median from Data Stream		295. Find Median from Data Stream
322. Coin Change		322. Coin Change
344. Reverse String		344. Reverse String
349. Intersection of Two Arrays		349. Intersection of Two Arrays
350. Intersection of Two Arrays II		350. Intersection of Two Arrays II
371. Sum of Two Integers		371. Sum of Two Integers
392. Is Subsequence		392. Is Subsequence
404. Sum of Left Leaves		404. Sum of Left Leaves
412. Fizz Buzz		412. Fizz Buzz
414. Third Maximum Number		414. Third Maximum Number
415. Add Strings		415. Add Strings
416. Partition Equal Subset Sum		416. Partition Equal Subset Sum
421. Maximum XOR of Two Numbers in an Array		421. Maximum XOR of Two Numbers in an Array
434. Number of Segments in a String		434. Number of Segments in a String
441. Arranging Coins		441. Arranging Coins
460. LFU Cache		460. LFU Cache
461. Hamming Distance		461. Hamming Distance
520. Detect Capital		520. Detect Capital

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