Date: May 4, 2015 - May 10, 2015
| ID | Name | AC |
|---|---|---|
| 165 | Compare Version Numbers | 15.0% |
| 205 | Isomorphic Strings | 24.1% |
| 203 | Remove Linked List Elements | 27.1% |
| 202 | Happy Number | 32.2% |
| 6 | ZigZag Conversion | 22.2% |
| 7 | Reverse Integer | 26.4% |
| 8 | String to Integer (atoi) | 13.2% |
Date: May 11, 2015 - May 17, 2015
| ID | Name |
|---|---|
| 9 | Palindrome Number |
| 13 | Roman to Integer |
| 14 | Longest Common Prefix |
| 19 | Remove Nth Node From End of List |
| 20 | Valid Parentheses |
| 21 | Merge Two Sorted Lists |
| 26 | Remove Duplicates from Sorted Array |
Date: May 18, 2015 - May 25, 2015
| Day | ID | Name |
|---|---|---|
| MON | 27 | Remove Element |
| TUE | 28 | Implement strStr() |
| WED | 36 | Valid Sudoku |
| THU | 38 | Count and Say |
| FRI | 58 | Length of Last Word |
| SAT | 66 | Plus One |
| SUN | 67 | Add Binary |
6 ZigZag Conversion 22.2% Easy 7 Reverse Integer 26.3% Easy 8 String to Integer (atoi) 13.2% Easy 9 Palindrome Number 29.7% Easy 13 Roman to Integer 35.1% Easy 14 Longest Common Prefix 26.0% Easy 19 Remove Nth Node From End of List 27.5% Easy 20 Valid Parentheses 26.5% Easy 21 Merge Two Sorted Lists 32.9% Easy 26 Remove Duplicates from Sorted Array 31.5% Easy 27 Remove Element 32.5% Easy 28 Implement strStr() 22.1% Easy 36 Valid Sudoku 27.3% Easy 38 Count and Say 25.3% Easy 58 Length of Last Word 28.5% Easy 66 Plus One 30.7% Easy 67 Add Binary 24.9% Easy 70 Climbing Stairs 34.2% Easy 83 Remove Duplicates from Sorted List 34.4% Easy 88 Merge Sorted Array 30.2% 100 Same Tree 42.0% Easy 101 Symmetric Tree 31.6% Easy 102 Binary Tree Level Order Traversal 29.6% Easy 104 Maximum Depth of Binary Tree 45.1% Easy 107 Binary Tree Level Order Traversal II 31.0% Easy 110 Balanced Binary Tree 32.1% Easy 111 Minimum Depth of Binary Tree 29.2% Easy 112 Path Sum 29.8% Easy 118 Pascal's Triangle 30.2% Easy 119 Pascal's Triangle II 29.4% Easy 125 Valid Palindrome 22.1% Easy 155 Min Stack 17.8% Easy 157 Read N Characters Given Read4 29.7% Easy 160 Intersection of Two Linked Lists 28.1% Easy 165 Compare Version Numbers 15.0% Easy 168 Excel Sheet Column Title 17.9% Easy 169 Majority Element 34.7% Easy 170 Two Sum III - Data structure design 25.0% Easy 171 Excel Sheet Column Number 36.9% Easy 172 Factorial Trailing Zeroes 28.0% Easy 189 Rotate Array 17.7% Easy 190 Reverse Bits 27.9% Easy 191 Number of 1 Bits 37.2% Easy 198 House Robber 28.2% Easy 202 Happy Number 32.1% Easy 203 Remove Linked List Elements 26.7% Easy 204 Count Primes 18.7% Easy 205 Isomorphic Strings 23.7% Easy 206 Reverse Linked List 34.7% Easy
1 Two Sum 17.6% Medium
2 Add Two Numbers 21.8% Medium
3 Longest Substring Without Repeating Characters 21.0% Medium
5 Longest Palindromic Substring 20.7% Medium
11 Container With Most Water 32.0% Medium
12 Integer to Roman 34.9% Medium
15 3Sum 17.0% Medium
16 3Sum Closest 26.9% Medium
17 Letter Combinations of a Phone Number 25.9% Medium
18 4Sum 21.5% Medium
22 Generate Parentheses 32.5% Medium
24 Swap Nodes in Pairs 32.5% Medium
29 Divide Two Integers 15.1% Medium
31 Next Permutation 25.1% Medium
34 Search for a Range 27.6% Medium
35 Search Insert Position 35.5% Medium
39 Combination Sum 27.9% Medium
40 Combination Sum II 25.1% Medium
43 Multiply Strings 20.9% Medium
46 Permutations 31.9% Medium
48 Rotate Image 31.9% Medium
49 Anagrams 24.4% Medium
50 Pow(x, n) 26.8% Medium
53 Maximum Subarray 34.6% Medium
54 Spiral Matrix 20.8% Medium
55 Jump Game 27.2% Medium
59 Spiral Matrix II 31.6% Medium
60 Permutation Sequence 22.8% Medium
61 Rotate List 21.8% Medium
62 Unique Paths 32.8% Medium
63 Unique Paths II 28.0% Medium
64 Minimum Path Sum 32.1% Medium
69 Sqrt(x) 23.1% Medium
71 Simplify Path 20.1% Medium
73 Set Matrix Zeroes 31.5% Medium
74 Search a 2D Matrix 31.5% Medium
75 Sort Colors 32.6% Medium
77 Combinations 30.8% Medium
78 Subsets 28.2% Medium
79 Word Search 20.1% Medium
80 Remove Duplicates from Sorted Array II 30.7% Medium
81 Search in Rotated Sorted Array II 31.6% Medium
82 Remove Duplicates from Sorted List II 25.0% Medium
86 Partition List 27.6% Medium
89 Gray Code 32.6% Medium
90 Subsets II 27.6% Medium
91 Decode Ways 16.4% Medium
92 Reverse Linked List II 26.2% Medium
93 Restore IP Addresses 20.9% Medium
94 Binary Tree Inorder Traversal 36.2% Medium
95 Unique Binary Search Trees II 27.7% Medium
96 Unique Binary Search Trees 36.3% Medium
98 Validate Binary Search Tree 21.0% Medium
103 Binary Tree Zigzag Level Order Traversal 26.5% Medium
105 Construct Binary Tree from Preorder and Inorder Traversal 26.4% Medium
106 Construct Binary Tree from Inorder and Postorder Traversal 26.8% Medium
108 Convert Sorted Array to Binary Search Tree 33.9% Medium
109 Convert Sorted List to Binary Search Tree 27.9% Medium
113 Path Sum II 26.7% Medium
114 Flatten Binary Tree to Linked List 28.8% Medium
116 Populating Next Right Pointers in Each Node 36.2% Medium
120 Triangle 27.2% Medium
121 Best Time to Buy and Sell Stock 32.6% Medium
122 Best Time to Buy and Sell Stock II 38.2% Medium
127 Word Ladder 19.2% Medium
129 Sum Root to Leaf Numbers 30.4% Medium
130 Surrounded Regions 14.6% Medium
131 Palindrome Partitioning 26.5% Medium
133 Clone Graph 23.8% Medium
134 Gas Station 25.7% Medium
136 Single Number 45.3% Medium
137 Single Number II 34.8% Medium
139 Word Break 22.8% Medium
141 Linked List Cycle 36.3% Medium
142 Linked List Cycle II 31.3% Medium
143 Reorder List 20.9% Medium
144 Binary Tree Preorder Traversal 36.3% Medium
147 Insertion Sort List 26.2% Medium
148 Sort List 21.8% Medium
150 Evaluate Reverse Polish Notation 20.9% Medium
151 Reverse Words in a String 15.0% Medium
152 Maximum Product Subarray 19.1% Medium
153 Find Minimum in Rotated Sorted Array 33.1% Medium
156 Binary Tree Upside Down 34.6% Medium
161 One Edit Distance 24.9% Medium
162 Find Peak Element 31.1% Medium
163 Missing Ranges 23.7% Medium
166 Fraction to Recurring Decimal 12.5% Medium
167 Two Sum II - Input array is sorted 43.3% Medium
173 Binary Search Tree Iterator 29.0% Medium
179 Largest Number 15.6% Medium
186 Reverse Words in a String II 31.6% Medium
187 Repeated DNA Sequences 18.8% Medium
199 Binary Tree Right Side View 26.4% Medium
200 Number of Islands 21.6% Medium
201 Bitwise AND of Numbers Range 26.6% Medium
207 Course Schedule 19.9% Medium
208 Implement Trie (Prefix Tree) 24.6% Medium
4 Median of Two Sorted Arrays 17.7% Hard
10 Regular Expression Matching 20.7% Hard
23 Merge k Sorted Lists 21.1% Hard
25 Reverse Nodes in k-Group 25.4% Hard
30 Substring with Concatenation of All Words 19.4% Hard
32 Longest Valid Parentheses 20.7% Hard
33 Search in Rotated Sorted Array 29.0% Hard
37 Sudoku Solver 21.6% Hard
41 First Missing Positive 23.0% Hard
42 Trapping Rain Water 30.1% Hard
44 Wildcard Matching 15.1% Hard
45 Jump Game II 24.3% Hard
47 Permutations II 25.7% Hard
51 N-Queens 26.5% Hard
52 N-Queens II 35.6% Hard
56 Merge Intervals 22.3% Hard
57 Insert Interval 21.3% Hard
65 Valid Number 11.5% Hard
68 Text Justification 14.4% Hard
72 Edit Distance 26.4% Hard
76 Minimum Window Substring 18.8% Hard
84 Largest Rectangle in Histogram 22.5% Hard
85 Maximal Rectangle 21.8% Hard
87 Scramble String 24.1% Hard
97 Interleaving String 20.6% Hard
99 Recover Binary Search Tree 24.5% Hard
115 Distinct Subsequences 26.1% Hard
117 Populating Next Right Pointers in Each Node II 31.8% Hard
123 Best Time to Buy and Sell Stock III 23.7% Hard
124 Binary Tree Maximum Path Sum 21.3% Hard
126 Word Ladder II 12.7% Hard
128 Longest Consecutive Sequence 29.2% Hard
132 Palindrome Partitioning II 19.5% Hard
135 Candy 20.3% Hard
138 Copy List with Random Pointer 24.8% Hard
140 Word Break II 17.5% Hard
145 Binary Tree Postorder Traversal 32.2% Hard
146 LRU Cache 14.9% Hard
149 Max Points on a Line 12.3% Hard
154 Find Minimum in Rotated Sorted Array II 31.7% Hard
158 Read N Characters Given Read4 II - Call multiple times 22.0% Hard
159 Longest Substring with At Most Two Distinct Characters 30.2% Hard
164 Maximum Gap 24.1% Hard
174 Dungeon Game 17.3% Hard
188 Best Time to Buy and Sell Stock IV 16.4% Hard