leetcode

This repository contains my solution to the leetcode problems form easy to hard.

Algorithm

Easy

#	Title	My Solution	Related Topics
1	Two Sum	0001_Two_Sum.md	Array, Hash Table
7	Reverse Integer	0007_Reverse_Integer.md	Math
9	Palindrome Number	0009_Palindrome_Number.md	Math
13	Roman to Interger	0013_Roman_To_Integer.md	Math, String
14	Longest Common Prefix	0014_Longest_Common_Prefix.md	String
20	Valid Parentheses	0020_Valid_Parentheses.md	String, Stack
21	Merge Two Sorted Lists	0021_Merge_Two_Sorted_Lists.md	Linked List
26	Remove Duplicates From Sorted Array	0026_Remove_Duplicates_From_Sorted_Array.md	Array, Two pointers
27	Remove Element	0027_Remove_Element.md	Array, Two pointers
28	Implement strStr()	0028_Implement_strStr().md	String, Two pointers
35	Search Insert Position	0035_Search_Insert_Position.md	Array, Binary Search
38	Count and Say	0038_Count_and_Say.md	String
53	Maximum Subarray	0053_Maximum_Subarray.md	Array, Divide and Conquer, Dynamic Programming
58	Length of Last Word	0058_Length_of_Last_Word.md	String
66	Plus One	0066_Plus_One.md	Array
67	Add Binary	0067_Add_Binary.md	Math, String
69	Sqrt(x)	0069_Sqrt(x).md	Math, Binary Search
70	Climbing Stairs	0070_Climbing_Stairs.md	Dynamic Programming
83	Remove Duplicates from Sorted List	0083_Remove_Duplicates_from_Sorted_List.md	Linked List
88	Merge Sorted Array	0088_Merge_Sorted_Array.md	Array, Two pointers
100	Same Tree	0100_Same_Tree.md	Tree, Depth First Search
101	Symmetric Tree	0101_Symmetric_Tree.md	Tree, Depth First Search, Breadth first Search
104	Maximum Depth of Binary Tree	0104_Maximum_Depth_of_Binary_Tree.md	Tree, Depth First Search
107	Binary Tree Level Order Traversal II	0107_Binary_Tree_Level_Order_Traversal_II.md	Tree, Breadth first Search
108	Convert Sorted Array to Binary Search Tree	0108_Convert_Sorted_Array_to_Binary_Search_Tree.md	Tree, Depth First Search
110	Balanced Binary Tree	0110_Balanced_Binary_Tree.md	Tree, Depth First Search
111	Minimum Depth of Binary Tree	0111_Minimum_Depth_of_Binary_Tree.md	Tree, Depth First Search, Breadth first Search
112	Path Sum	0112_Path_Sum.md	Tree, Depth First Search
118	Pascal's Triangle	0118_Pascal's_Triangle.md	Array
119	Pascal's Triangle II	0119_Pascal's_Triangle_II.md	Array
121	Best Time to Buy and Sell Stock	0121_Best_Time_to_Buy_and_Sell_Stock.md	Array, Greedy
122	Best Time to Buy and Sell Stock II	0122_Best_Time_to_Buy_and_Sell_Stock_II.md	Array, Greedy
125	Valid Palindrome	0125_Valid_Palindrome.md	Two Pointers, String
136	Single Number	0136_Single_Number.md	Hash Table, Bit Manipulation
141	Linked List Cycle	0141_Linked_List_Cycle.md	Linked List, Two Pointer

Some Thoughts

1. 2020/03/03 Weak at Binary Search
2. 2020/03/06 Remember to new a node