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217 Contains Duplicate 38.8% Easy
216 Combination Sum III 28.6% Medium
215 Kth Largest Element in an Array 26.0% Medium
214 Shortest Palindrome 14.1% Hard
213 House Robber II 26.3% Medium
212 Word Search II 15.6% Hard
211 Add and Search Word - Data structure design 20.8% Medium
210 Course Schedule II 18.6% Medium
209 Minimum Size Subarray Sum 22.7% Medium
208 Implement Trie (Prefix Tree) 24.8% Medium
207 Course Schedule 20.7% Medium
206 Reverse Linked List 32.9% Easy
205 Isomorphic Strings 24.0% Easy
204 Count Primes 18.7% Easy
203 Remove Linked List Elements 26.2% Easy
202 Happy Number 32.0% Easy
201 Bitwise AND of Numbers Range 27.1% Medium
200 Number of Islands 21.7% Medium
199 Binary Tree Right Side View 26.6% Medium
198 House Robber 28.6% Easy
191 Number of 1 Bits 37.3% Easy
190 Reverse Bits 28.2% Easy
189 Rotate Array 17.8% Easy
188 Best Time to Buy and Sell Stock IV 16.7% Hard
187 Repeated DNA Sequences 19.0% Medium
186 Reverse Words in a String II 31.9% Medium
179 Largest Number 15.6% Medium
174 Dungeon Game 17.4% Hard
173 Binary Search Tree Iterator 29.2% Medium
172 Factorial Trailing Zeroes 28.2% Easy
171 Excel Sheet Column Number 36.9% Easy
170 Two Sum III - Data structure design 24.8% Easy
169 Majority Element 34.7% Easy
168 Excel Sheet Column Title 18.0% Easy
167 Two Sum II - Input array is sorted 43.6% Medium
166 Fraction to Recurring Decimal 12.5% Medium
165 Compare Version Numbers 15.1% Easy
164 Maximum Gap 24.2% Hard
163 Missing Ranges 23.8% Medium
162 Find Peak Element 31.3% Medium
161 One Edit Distance 24.5% Medium
160 Intersection of Two Linked Lists 28.3% Easy
159 Longest Substring with At Most Two Distinct Characters 30.2% Hard
158 Read N Characters Given Read4 II - Call multiple times 22.0% Hard
157 Read N Characters Given Read4 29.9% Easy
156 Binary Tree Upside Down 34.5% Medium
155 Min Stack 18.0% Easy
154 Find Minimum in Rotated Sorted Array II 31.8% Hard
153 Find Minimum in Rotated Sorted Array 33.1% Medium
152 Maximum Product Subarray 19.2% Medium
151 Reverse Words in a String 15.0% Medium
150 Evaluate Reverse Polish Notation 20.9% Medium
149 Max Points on a Line 12.4% Hard
148 Sort List 21.9% Medium
147 Insertion Sort List 26.3% Medium
146 LRU Cache 14.9% Hard
145 Binary Tree Postorder Traversal 32.3% Hard
144 Binary Tree Preorder Traversal 36.3% Medium
143 Reorder List 20.9% Medium
142 Linked List Cycle II 31.3% Medium
141 Linked List Cycle 36.3% Medium
140 Word Break II 17.5% Hard
139 Word Break 22.8% Medium
138 Copy List with Random Pointer 24.9% Hard
137 Single Number II 34.8% Medium
136 Single Number 45.2% Medium
135 Candy 20.4% Hard
134 Gas Station 25.7% Medium
133 Clone Graph 23.9% Medium
132 Palindrome Partitioning II 19.5% Hard
131 Palindrome Partitioning 26.6% Medium
130 Surrounded Regions 14.6% Medium
129 Sum Root to Leaf Numbers 30.3% Medium
128 Longest Consecutive Sequence 29.3% Hard
127 Word Ladder 19.2% Medium
126 Word Ladder II 12.7% Hard
125 Valid Palindrome 22.0% Easy
124 Binary Tree Maximum Path Sum 21.4% Hard
123 Best Time to Buy and Sell Stock III 23.7% Hard
122 Best Time to Buy and Sell Stock II 38.2% Medium
121 Best Time to Buy and Sell Stock 32.6% Medium
120 Triangle 27.3% Medium
119 Pascal's Triangle II 29.4% Easy
118 Pascal's Triangle 30.1% Easy
117 Populating Next Right Pointers in Each Node II 31.9% Hard
116 Populating Next Right Pointers in Each Node 36.2% Medium
115 Distinct Subsequences 26.1% Hard
114 Flatten Binary Tree to Linked List 28.8% Medium
113 Path Sum II 26.7% Medium
112 Path Sum 29.9% Easy
111 Minimum Depth of Binary Tree 29.2% Easy
110 Balanced Binary Tree 32.1% Easy
109 Convert Sorted List to Binary Search Tree 27.9% Medium
108 Convert Sorted Array to Binary Search Tree 34.0% Medium
107 Binary Tree Level Order Traversal II 31.0% Easy
106 Construct Binary Tree from Inorder and Postorder Traversal 26.8% Medium
105 Construct Binary Tree from Preorder and Inorder Traversal 26.4% Medium
104 Maximum Depth of Binary Tree 45.2% Easy
103 Binary Tree Zigzag Level Order Traversal 26.5% Medium
102 Binary Tree Level Order Traversal 29.6% Easy
101 Symmetric Tree 31.6% Easy
100 Same Tree 42.0% Easy
99 Recover Binary Search Tree 24.5% Hard
98 Validate Binary Search Tree 20.9% Medium
97 Interleaving String 20.6% Hard
96 Unique Binary Search Trees 36.2% Medium
95 Unique Binary Search Trees II 27.8% Medium
94 Binary Tree Inorder Traversal 36.3% Medium
93 Restore IP Addresses 20.9% Medium
92 Reverse Linked List II 26.1% Medium
91 Decode Ways 16.4% Medium
90 Subsets II 27.6% Medium
89 Gray Code 32.7% Medium
88 Merge Sorted Array 30.0% Easy
87 Scramble String 24.1% Hard
86 Partition List 27.5% Medium
85 Maximal Rectangle 21.9% Hard
84 Largest Rectangle in Histogram 22.5% Hard
83 Remove Duplicates from Sorted List 34.5% Easy
82 Remove Duplicates from Sorted List II 25.0% Medium
81 Search in Rotated Sorted Array II 31.5% Medium
80 Remove Duplicates from Sorted Array II 30.7% Medium
79 Word Search 20.2% Medium
78 Subsets 28.2% Medium
77 Combinations 30.9% Medium
76 Minimum Window Substring 18.8% Hard
75 Sort Colors 32.6% Medium
74 Search a 2D Matrix 31.5% Medium
73 Set Matrix Zeroes 31.5% Medium
72 Edit Distance 26.3% Hard
71 Simplify Path 20.1% Medium
70 Climbing Stairs 34.3% Easy
69 Sqrt(x) 23.1% Medium
68 Text Justification 14.4% Hard
67 Add Binary 24.8% Easy
66 Plus One 30.6% Easy
65 Valid Number 11.4% Hard
64 Minimum Path Sum 32.2% Medium
63 Unique Paths II 28.0% Medium
62 Unique Paths 32.7% Medium
61 Rotate List 21.8% Medium
60 Permutation Sequence 22.8% Medium
59 Spiral Matrix II 31.7% Medium
58 Length of Last Word 28.4% Easy
57 Insert Interval 21.3% Hard
56 Merge Intervals 22.3% Hard
55 Jump Game 27.2% Medium
54 Spiral Matrix 20.8% Medium
53 Maximum Subarray 34.6% Medium
52 N-Queens II 35.7% Hard
51 N-Queens 26.6% Hard
50 Pow(x, n) 26.7% Medium
49 Anagrams 24.4% Medium
48 Rotate Image 31.9% Medium
47 Permutations II 25.8% Hard
46 Permutations 31.9% Medium
45 Jump Game II 24.3% Hard
44 Wildcard Matching 15.0% Hard
43 Multiply Strings 20.9% Medium
42 Trapping Rain Water 30.1% Hard
41 First Missing Positive 23.0% Hard
40 Combination Sum II 25.1% Medium
39 Combination Sum 27.9% Medium
38 Count and Say 25.2% Easy
37 Sudoku Solver 21.7% Hard
36 Valid Sudoku 27.3% Easy
35 Search Insert Position 35.5% Medium
34 Search for a Range 27.6% Medium
33 Search in Rotated Sorted Array 29.0% Hard
32 Longest Valid Parentheses 20.8% Hard
31 Next Permutation 25.0% Medium
30 Substring with Concatenation of All Words 19.4% Hard
29 Divide Two Integers 15.1% Medium
28 Implement strStr() 22.1% Easy
27 Remove Element 32.4% Easy
26 Remove Duplicates from Sorted Array 31.5% Easy
25 Reverse Nodes in k-Group 25.5% Hard
24 Swap Nodes in Pairs 32.5% Medium
23 Merge k Sorted Lists 21.1% Hard
22 Generate Parentheses 32.5% Medium
21 Merge Two Sorted Lists 32.9% Easy
20 Valid Parentheses 26.6% Easy
19 Remove Nth Node From End of List 27.4% Easy
18 4Sum 21.6% Medium
17 Letter Combinations of a Phone Number 25.8% Medium
16 3Sum Closest 26.9% Medium
15 3Sum 16.9% Medium
14 Longest Common Prefix 26.0% Easy
13 Roman to Integer 35.2% Easy
12 Integer to Roman 34.9% Medium
11 Container With Most Water 31.9% Medium
10 Regular Expression Matching 20.7% Hard
9 Palindrome Number 29.7% Easy
8 String to Integer (atoi) 13.2% Easy
7 Reverse Integer 26.0% Easy
6 ZigZag Conversion 22.1% Easy
5 Longest Palindromic Substring 20.7% Medium
4 Median of Two Sorted Arrays 17.6% Hard
3 Longest Substring Without Repeating Characters 20.9% Medium
2 Add Two Numbers 21.6% Medium
1 Two Sum 17.6% Medium

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