Practice-Leetcode

这是一个Chinese School Girl🇨🇳用来练习leetcode的文档.每道下面的题都有详细的解题思路，和知识点分析，尽请参考。

找实习的小伙伴也可以参考我的Tech-blog里面的面经 miqianmimi Tech-blog

2018/04/10:

2018/04/18:

29.Divide Two Integers 二进制累加代替除法，防止溢出
36.Valid Sudoku set去重复

2018/04/19:

038.Count and Say 递归
040.Combination Sum II DFS

2018/04/20:

043.Multiply Strings Divide and Conquer FFT傅里叶快速算法
047.Permutations II 递归法+迭代法

2018/05/06:

050.Pow(x,n) 递归
special: lineupg 递归 RMQ问题的sparse_table 线段树

2018/05/07:

058.Length Of Last Word 第一个C++ (✿>◡‿<)
059.Spiral Matrix II 人工智能方法direction

2018/05/08:

060. Permutation Sequence 数学方法,循环迭代
061. Rotate List 链表指针连接+断开

2018/05/09:

063. Unique Paths II 动态规划 DP算法
066. Plus One 数学进位循环

2018/05/15:

头条机考1. Elastic Search 贪心算法遍历，ES经典搜索匹配算法，trick
头条机考2. 贪吃蛇蛇动态规划算法，加了特殊情况的状态转移方程的写法

2018/05/22:

067. Add Binary

2018/05/29:

069. Sqrt(x) 二分法，更新公式
071. Simplify Path 栈的运用和split函数~

2018/05/30:

073. Set Matrix Zeroes 找特殊位置放置，节省space
074. Search a 2D Matrix 二分法：矩阵看成列表；矩阵可以往右往下

2018/06/04:

077. Combination 回溯+递归方法.
080. Remove Duplicateds From Sorted Arrays II 两个指针

2018/06/11:

081. Search in Rotated Sorted Array II中间点递归

2018/06/14:

082.Remove Duplicates from Sorted List II 链表+一个list记录dict中key的顺序
083.Remove Duplicates from Sorted List 链表遍历一遍，记录一个key

2018/06/15:

086.Partition List 双链表的链接
088.Merge Sorted Array 双指针+反方向的循环

Name		Name	Last commit message	Last commit date
Latest commit History 181 Commits
014.longestcommonperfix		014.longestcommonperfix
016.3SumClosest		016.3SumClosest
018.4Sum		018.4Sum
024.SwapNodesInPairs		024.SwapNodesInPairs
026.RemoveDuplicateFromSortedArray		026.RemoveDuplicateFromSortedArray
027.RemoveElement		027.RemoveElement
028.ImplementStrstr		028.ImplementStrstr
029.DivideTwoIntegers		029.DivideTwoIntegers
035.SearchInsertPosition		035.SearchInsertPosition
036.ValidSudoku		036.ValidSudoku
038.CountandSay		038.CountandSay
040.CombinationSumII		040.CombinationSumII
043.MultiplyStrings		043.MultiplyStrings
047.PermutationsII		047.PermutationsII
050.Pow(x,n)		050.Pow(x,n)
058.LengthOfLastWord		058.LengthOfLastWord
059.SpiralMatrixII		059.SpiralMatrixII
060.PermutationSequence		060.PermutationSequence
061.RotateList		061.RotateList
063.UniquePathsII		063.UniquePathsII
066.PlusOne		066.PlusOne
067.AddBinary		067.AddBinary
069.Sqrtx		069.Sqrtx
071.SimplifyPath		071.SimplifyPath
073.SetMatrixZeroes		073.SetMatrixZeroes
074.Searcha2DMatrix		074.Searcha2DMatrix
077.Combination		077.Combination
080.RemoveDuplicatesfromSortedArrayII		080.RemoveDuplicatesfromSortedArrayII
081.SearchinRotatedSortedArrayII		081.SearchinRotatedSortedArrayII
082.RemoveDuplicatesfromSortedListII		082.RemoveDuplicatesfromSortedListII
083.RemoveDuplicatesfromSortedList		083.RemoveDuplicatesfromSortedList
086.PartitionList		086.PartitionList
088.MergeSortedArray		088.MergeSortedArray
special.lineupg		special.lineupg
toutiao1.elasticsearch		toutiao1.elasticsearch
toutiao2.tanchishe		toutiao2.tanchishe
.DS_Store		.DS_Store
001__Two Sum.py		001__Two Sum.py
002 Add Two Numbers.py		002 Add Two Numbers.py
003 Longest Substring Without Repeating Characters.py		003 Longest Substring Without Repeating Characters.py
005 Longest Palndromic Substring easy.py		005 Longest Palndromic Substring easy.py
006 ZigZag Conversion.py		006 ZigZag Conversion.py
007__Reverse Interger.py		007__Reverse Interger.py
008__StringtoInteger(atoi).py		008__StringtoInteger(atoi).py
009__Palindrome Number.py		009__Palindrome Number.py
011 Container With Most Water.py		011 Container With Most Water.py
012__IntegertoRoman.py		012__IntegertoRoman.py
013__Roman to Integer.py		013__Roman to Integer.py
013__RomantoInteger.md		013__RomantoInteger.md
015 3 Sum Fast.py		015 3 Sum Fast.py
017 Letter Combinations of a Phone Number.py		017 Letter Combinations of a Phone Number.py
019 Remove Nth Node From End of List.py		019 Remove Nth Node From End of List.py
020 Valid Parentheses.py		020 Valid Parentheses.py
021 Merge two sorted List.py		021 Merge two sorted List.py
021__Merge two sorted List.py		021__Merge two sorted List.py
022 Generate Parentheses.py		022 Generate Parentheses.py
031 Next Permutation.py		031 Next Permutation.py
033 Search in Rotated Sorted Array.py		033 Search in Rotated Sorted Array.py
034__Search For A Range.py		034__Search For A Range.py
039 Combination Sum.py		039 Combination Sum.py
042 Trapping Rain Water.py		042 Trapping Rain Water.py
046__Permutations.py		046__Permutations.py
048__Rotate Image.py		048__Rotate Image.py
049__Group Anagrams.py		049__Group Anagrams.py
053__Maximum Subarray.py		053__Maximum Subarray.py
054 Spatial Matrix.py		054 Spatial Matrix.py
055__Jump Game.py		055__Jump Game.py
056__Merge Intervals.py		056__Merge Intervals.py
062__Unique Parh.py		062__Unique Parh.py
064 Minimum Path Sum.py		064 Minimum Path Sum.py
070__Climbing Stairs.py		070__Climbing Stairs.py
075__Sort Colors.py		075__Sort Colors.py
078__Subsets.py		078__Subsets.py
079__Word Search.py		079__Word Search.py
094__Binary Tree Inorder Traversal.py		094__Binary Tree Inorder Traversal.py
096__Unique Binary Search Trees.py		096__Unique Binary Search Trees.py
098__Validate Binary Search Tree.py		098__Validate Binary Search Tree.py
101__Symmetric Tree.py		101__Symmetric Tree.py
102__Binary Tree Level Order Traversal.py		102__Binary Tree Level Order Traversal.py
104__Maximum Depth of Binary Tree.py		104__Maximum Depth of Binary Tree.py
105__Construct Binary Tree from Preorder and Inorder Traversal.py		105__Construct Binary Tree from Preorder and Inorder Traversal.py
112 Path Sum easy.py		112 Path Sum easy.py
114 Flatten Binary Tree to Linked List.py		114 Flatten Binary Tree to Linked List.py
121__Best Time to Buy and Sell Stock.py		121__Best Time to Buy and Sell Stock.py
136__Single Number.py		136__Single Number.py
139__Word Break.py		139__Word Break.py
141__Linked List Cycle.py		141__Linked List Cycle.py
142__Linked List Cycle 2.py		142__Linked List Cycle 2.py
148__Sort List.py		148__Sort List.py
152__Maximum Product Subrray.py		152__Maximum Product Subrray.py
155__Min Stack.py		155__Min Stack.py
160__Intersection of two linked list.py		160__Intersection of two linked list.py
169__Majority Element.py		169__Majority Element.py
198__House Robber.py		198__House Robber.py
200__Number of Islands.py		200__Number of Islands.py
206__Reverse Linked List.py		206__Reverse Linked List.py
207__Course Schedule.py		207__Course Schedule.py
208__Implement Trie.py		208__Implement Trie.py
215__Kth Largest Element.py		215__Kth Largest Element.py
221__Maximal Square.py		221__Maximal Square.py

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