_leetcode-python.pdf

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Introduction

001 Two Sum

002 Add Two Numbers

003 Longest Substring Without Repeating Characters

004 Median of Two Sorted Arrays

005 Longest Palindromic Substring

006 ZigZag Conversion

007 String to Integer (atoi)

008 Reverse Integer

009 Palindrome Number

010 Regular Expression Matching

011 Container With Most Water

012 Integer to Roman

013 Roman to Integer

014 Longest Common Prefix

015 3Sum

016 3Sum Closest

017 Letter Combinations of a Phone Number

018 4Sum

019 Remove Nth Node From End of List

020 Valid Parentheses

021 Merge Two Sorted Lists

022 Generate Parentheses

023 Merge k Sorted Lists

024 Swap Nodes in Pairs

025 Reverse Nodes in k-Group

026 Remove Duplicates from Sorted Array

027 Remove Element

028 Implement strStr()

029 Divide Two Integers

030 Substring with Concatenation of All Words

031 Next Permutation

032 Longest Valid Parentheses

033 Search in Rotated Sorted Array

034 Search for a Range

035 Search Insert Position

036 Valid Sudoku

037 Sudoku Solver

038 Count and Say

039 Combination Sum

040 Combination Sum II

041 First Missing Positive

042 Trapping Rain Water

043 Multiply Strings

044 Wildcard Matching

045 Jump Game II

046 Permutations

047 Permutations II

048 Rotate Image

049 Group Anagrams

050 Pow(X, n)

051 N-Queens

052 N-Queens II

053 Maximum Subarray

054 Spiral Matrix

055 Jump Game

056 Merge Intervals

057 Insert Interval

058 Length of Last Word

059 Spiral Matrix II

060 Permutation Sequence

061 Rotate List

062 Unique Paths

063 Unique Paths II

064 Minimum Path Sum

065 Valid Number

066 Plus One

067 Add Binary

068 Text Justification

069 Sqrt(X)

070 Climbing Stairs

071 Simplify Path

072 Edit Distance

073 Set Matrix Zeroes

074 Search a 2D Matrix

075 Sort Colors

076 Minimum Window Substring

077 Combinations

078 Subsets

079 Word Search

080 Remove Duplicates from Sorted Array II

081 Search in Rotated Sorted Array II

082 Remove Duplicates from Sorted List II

083 Remove Duplicates from Sorted List

084 Largest Rectangle in Histogram

085 Maximal Rectangle

086 Partition List

087 Scramble String

088 Merge Sorted Array

089 Gray Code

090 Subsets II

091 Decode Ways

092 Reverse Linked List II

093 Restore IP Addresses

094 Binary Tree Inorder Traversal

095 Unique Binary Search Trees II

096 Unique Binary Search Trees

097 Interleaving String

098 Validate Binary Search Tree

099 Recover Binary Search Tree

100 Same Tree

101 Symmetric Tree

102 Binary Tree Level Order Traversal

103 Binary Tree Zigzag Level Order Traversal

104 Maximum Depth of Binary Tree

105 Construct Binary Tree from Preorder and Inorder Traversal

106 Construct Binary Tree from Inorder and Postorder Traversal

107 Binary Tree Level Order Traversal II

108 Convert Sorted Array to Binary Search Tree

109 Convert Sorted List to Binary Search Tree

110 Balanced Binary Tree

111 Minimum Depth of Binary Tree

112 Path Sum

113 Path Sum II

114 Flatten Binary Tree to Linked List

115 Distinct Subsequences

116 Populating Next Right Pointers in Each Node

117 Populating Next Right Pointers in Each Node II

118 Pascal's Triangle

119 Pascal's Triangle II

120 Triangle

121 Best Time to Buy and Sell Stock

122 Best Time to Buy and Sell Stock II

123 Best Time to Buy and Sell Stock III

124 Binary Tree Maximum Path Sum

125 Valid Palindrome

126 Word Ladder II

127 Word Ladder

128 Longest Consecutive Sequence

129 Sum Root to Leaf Numbers

130 Surrounded Regions

131 Palindrome Partitioning

132 Palindrome Partitioning II

133 Clone Graph

134 Gas Station

135 Candy

136 Single Number

137 Single Number II

138 Copy List with Random Pointer

139 Word Break

140 Word Break II

141 Linked List Cycle

142 Linked List Cycle II

143 Reorder List

144 Binary Tree Preorder Traversal

145 Binary Tree Postorder Traversal

146 LRU Cache

147 Insertion Sort List

149 Max Points on a Line

150 Evaluate Reverse Polish Notation

151 Reverse Words in a String

152 Maximum Product Subarray

155 Min Stack

160 Intersection of Two Linked Lists

162 Find Peak Element

166 Fraction to Recurring Decimal

168 Excel Sheet Column Title

169 Majority Element

171 Excel Sheet Column Number

172 Factorial Trailing Zeroes

173 Binary Search Tree Iterator

179 Largest Number

189 Rotate Array

Table of Contents Introduction 001 Two Sum 002 Add Two Numbers 003 Longest Substring Without Repeating Characters 004 Median of Two Sorted Arrays 005 Longest Palindromic Substring 006 ZigZag Conversion 007 String to Integer (atoi) 008 Reverse Integer 009 Palindrome Number 010 Regular Expression Matching 011 Container With Most Water 012 Integer to Roman 013 Roman to Integer 014 Longest Common Prefix 015 3Sum 016 3Sum Closest 017 Letter Combinations of a Phone Number 018 4Sum 019 Remove Nth Node From End of List 020 Valid Parentheses 021 Merge Two Sorted Lists 022 Generate Parentheses 023 Merge k Sorted Lists 024 Swap Nodes in Pairs 025 Reverse Nodes in k-Group 026 Remove Duplicates from Sorted Array 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1

027 Remove Element 028 Implement strStr() 029 Divide Two Integers 030 Substring with Concatenation of All Words 031 Next Permutation 032 Longest Valid Parentheses 033 Search in Rotated Sorted Array 034 Search for a Range 035 Search Insert Position 036 Valid Sudoku 037 Sudoku Solver 038 Count and Say 039 Combination Sum 040 Combination Sum II 041 First Missing Positive 042 Trapping Rain Water 043 Multiply Strings 044 Wildcard Matching 045 Jump Game II 046 Permutations 047 Permutations II 048 Rotate Image 049 Group Anagrams 050 Pow(X, n) 051 N-Queens 052 N-Queens II 053 Maximum Subarray 054 Spiral Matrix 055 Jump Game 056 Merge Intervals 1.28 1.29 1.30 1.31 1.32 1.33 1.34 1.35 1.36 1.37 1.38 1.39 1.40 1.41 1.42 1.43 1.44 1.45 1.46 1.47 1.48 1.49 1.50 1.51 1.52 1.53 1.54 1.55 1.56 1.57 2

057 Insert Interval 058 Length of Last Word 059 Spiral Matrix II 060 Permutation Sequence 061 Rotate List 062 Unique Paths 063 Unique Paths II 064 Minimum Path Sum 065 Valid Number 066 Plus One 067 Add Binary 068 Text Justification 069 Sqrt(X) 070 Climbing Stairs 071 Simplify Path 072 Edit Distance 073 Set Matrix Zeroes 074 Search a 2D Matrix 075 Sort Colors 076 Minimum Window Substring 077 Combinations 078 Subsets 079 Word Search 080 Remove Duplicates from Sorted Array II 081 Search in Rotated Sorted Array II 082 Remove Duplicates from Sorted List II 083 Remove Duplicates from Sorted List 084 Largest Rectangle in Histogram 085 Maximal Rectangle 086 Partition List 1.58 1.59 1.60 1.61 1.62 1.63 1.64 1.65 1.66 1.67 1.68 1.69 1.70 1.71 1.72 1.73 1.74 1.75 1.76 1.77 1.78 1.79 1.80 1.81 1.82 1.83 1.84 1.85 1.86 1.87 3

087 Scramble String 088 Merge Sorted Array 089 Gray Code 090 Subsets II 091 Decode Ways 092 Reverse Linked List II 093 Restore IP Addresses 094 Binary Tree Inorder Traversal 095 Unique Binary Search Trees II 096 Unique Binary Search Trees 097 Interleaving String 098 Validate Binary Search Tree 099 Recover Binary Search Tree 100 Same Tree 101 Symmetric Tree 102 Binary Tree Level Order Traversal 103 Binary Tree Zigzag Level Order Traversal 104 Maximum Depth of Binary Tree 105 Construct Binary Tree from Preorder and Inorder Traversal 106 Construct Binary Tree from Inorder and Postorder Traversal 107 Binary Tree Level Order Traversal II 108 Convert Sorted Array to Binary Search Tree 109 Convert Sorted List to Binary Search Tree 110 Balanced Binary Tree 111 Minimum Depth of Binary Tree 112 Path Sum 113 Path Sum II 114 Flatten Binary Tree to Linked List 115 Distinct Subsequences 116 Populating Next Right Pointers in Each Node 1.88 1.89 1.90 1.91 1.92 1.93 1.94 1.95 1.96 1.97 1.98 1.99 1.100 1.101 1.102 1.103 1.104 1.105 1.106 1.107 1.108 1.109 1.110 1.111 1.112 1.113 1.114 1.115 1.116 1.117 4

117 Populating Next Right Pointers in Each Node II 118 Pascal's Triangle 119 Pascal's Triangle II 120 Triangle 121 Best Time to Buy and Sell Stock 122 Best Time to Buy and Sell Stock II 123 Best Time to Buy and Sell Stock III 124 Binary Tree Maximum Path Sum 125 Valid Palindrome 126 Word Ladder II 127 Word Ladder 128 Longest Consecutive Sequence 129 Sum Root to Leaf Numbers 130 Surrounded Regions 131 Palindrome Partitioning 132 Palindrome Partitioning II 133 Clone Graph 134 Gas Station 135 Candy 136 Single Number 137 Single Number II 138 Copy List with Random Pointer 139 Word Break 140 Word Break II 141 Linked List Cycle 142 Linked List Cycle II 143 Reorder List 144 Binary Tree Preorder Traversal 145 Binary Tree Postorder Traversal 146 LRU Cache 1.118 1.119 1.120 1.121 1.122 1.123 1.124 1.125 1.126 1.127 1.128 1.129 1.130 1.131 1.132 1.133 1.134 1.135 1.136 1.137 1.138 1.139 1.140 1.141 1.142 1.143 1.144 1.145 1.146 1.147 5

147 Insertion Sort List 148 Sort List 149 Max Points on a Line 150 Evaluate Reverse Polish Notation 151 Reverse Words in a String 152 Maximum Product Subarray 153 Find Minimum in Rotated Sorted Array 154 Find Minimum in Rotated Sorted Array II 155 Min Stack 156 Binary Tree Upside Down 157 Read N Characters Given Read4 158 Read N Characters Given Read4 II - Call multiple times 159 Longest Substring with At Most Two Distinct Characters 160 Intersection of Two Linked Lists 161 One Edit Distance 162 Find Peak Element 163 Missing Ranges 164 Maximum Gap 165 Compare Version Numbers 166 Fraction to Recurring Decimal 167 Two Sum II - Input array is sorted 168 Excel Sheet Column Title 169 Majority Element 170 Two Sum III - Data structure design 171 Excel Sheet Column Number 172 Factorial Trailing Zeroes 173 Binary Search Tree Iterator 174 Dungeon Game 175 Combine Two Tables 176 Second Highest Salary 1.148 1.149 1.150 1.151 1.152 1.153 1.154 1.155 1.156 1.157 1.158 1.159 1.160 1.161 1.162 1.163 1.164 1.165 1.166 1.167 1.168 1.169 1.170 1.171 1.172 1.173 1.174 1.175 1.176 1.177 6

177 Nth Highest Salary 178 Rank Scores 179 Largest Number 180 Consecutive Numbers 181 Employees Earning More Than Their Managers 182 Duplicate Emails 183 Customers Who Never Order 184 Department Highest Salary 185 Department Top Three Salaries 186 Reverse Words in a String II 187 Repeated DNA Sequences 188 Best Time to Buy and Sell Stock IV 189 Rotate Array 190 Reverse Bits 191 Number of 1 Bits 192 Word Frequency 193 Valid Phone Numbers 194 Transpose File 195 Tenth Line 196 Delete Duplicate Emails 197 Rising Temperature 198 House Robber 199 Binary Tree Right Side View 200 Number of Islands 1.178 1.179 1.180 1.181 1.182 1.183 1.184 1.185 1.186 1.187 1.188 1.189 1.190 1.191 1.192 1.193 1.194 1.195 1.196 1.197 1.198 1.199 1.200 1.201 7

Introduction LeetCode Python LeetCode的解题思路，代码是Python3版本。 8

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