problems

91	
Decode Ways    		23.1%	Medium	
15	
3Sum    		25.1%	Medium	
127	
Word Ladder    		26.2%	Medium	
98	
Validate Binary Search Tree    		26.6%	Medium	
179	
Largest Number    		26.8%	Medium	
402	
Remove K Digits    		27.1%	Medium	
5	
Longest Palindromic Substring    		28.2%	Medium	
50	
Pow(x, n)    		28.7%	Medium	
3	
Longest Substring Without Repeating Characters    		29.1%	Medium	
138	
Copy List with Random Pointer    		30.0%	Medium	
152	
Maximum Product Subarray    		30.3%	Medium	
31	
Next Permutation    		31.3%	Medium	
2	
Add Two Numbers    		32.1%	Medium	
322	
Coin Change    		32.3%	Medium	
55	
Jump Game    		32.8%	Medium	
79	
Word Search    		32.8%	Medium	
576	
Out of Boundary Paths    		33.1%	Medium	
33	
Search in Rotated Sorted Array    		33.3%	Medium	
229	
Majority Element II    		33.4%	Medium	
150	
Evaluate Reverse Polish Notation    		33.8%	Medium	
142	
Linked List Cycle II    		34.0%	Medium	
221	
Maximal Square    		34.5%	Medium	
34	
Find First and Last Position of Element in Sorted Array    		34.5%	Medium	
19	
Remove Nth Node From End of List    		34.6%	Medium	
304	
Range Sum Query 2D - Immutable    		34.8%	Medium	
227	
Basic Calculator II    		34.9%	Medium	
134	
Gas Station    		35.5%	Medium	
213	
House Robber II    		35.7%	Medium	
223	
Rectangle Area    		36.6%	Medium	
210	
Course Schedule II    		36.9%	Medium	
56	
Merge Intervals    		37.1%	Medium	
139	
Word Break    		37.1%	Medium	
395	
Longest Substring with At Least K Repeating Characters    		39.7%	Medium	
334	
Increasing Triplet Subsequence    		39.7%	Medium	
207	
Course Schedule    		39.8%	Medium	
116	
Populating Next Right Pointers in Each Node    		40.1%	Medium	
236	
Lowest Common Ancestor of a Binary Tree    		40.6%	Medium	
300	
Longest Increasing Subsequence    		41.6%	Medium	
208	
Implement Trie (Prefix Tree)    		41.7%	Medium	
416	
Partition Equal Subset Sum    		41.7%	Medium	
435	
Non-overlapping Intervals    		41.9%	Medium	
162	
Find Peak Element    		42.1%	Medium	
47	
Permutations II    		42.8%	Medium	
560	
Subarray Sum Equals K    		43.1%	Medium	
131	
Palindrome Partitioning    		43.3%	Medium	
279	
Perfect Squares    		43.4%	Medium	
200	
Number of Islands    		43.4%	Medium	
17	
Letter Combinations of a Phone Number    		43.6%	Medium	
75	
Sort Colors    		43.7%	Medium	
103	
Binary Tree Zigzag Level Order Traversal    43.8%
105	
Construct Binary Tree from Preorder and Inorder Traversal    		43.9%	Medium	
40	
Combination Sum II    		44.1%	Medium	
90	
Subsets II    		44.2%	Medium	
380	
Insert Delete GetRandom O(1)    		44.3%	Medium	
129	
Sum Root to Leaf Numbers    		44.3%	Medium	
114	
Flatten Binary Tree to Linked List    		44.9%	Medium	
309	
Best Time to Buy and Sell Stock with Cooldown    		45.1%	Medium	
16	
3Sum Closest    		45.7%	Medium	
494	
Target Sum    		45.9%	Medium	
11	
Container With Most Water    		47.4%	Medium	
357	
Count Numbers with Unique Digits    		47.6%	Medium	
96	
Unique Binary Search Trees    		48.3%	Medium	
337	
House Robber III    		49.1%	Medium	
64	
Minimum Path Sum    		49.3%	Medium	
646	
Maximum Length of Pair Chain    		49.9%	Medium	
62	
Unique Paths    		49.9%	Medium	
199	
Binary Tree Right Side View    		50.2%	Medium	
49	
Group Anagrams    		50.4%	Medium	
215	
Kth Largest Element in an Array    		50.6%	Medium	
102	
Binary Tree Level Order Traversal    		50.7%	Medium	
328	
Odd Even Linked List    		50.9%	Medium	
378	
Kth Smallest Element in a Sorted Matrix    		51.2%	Medium	
48	
Rotate Image    		51.4%	Medium	
287	
Find the Duplicate Number    		51.5%	Medium	
39	
Combination Sum    		51.5%	Medium	
454	
4Sum II    		51.7%	Medium	
12	
Integer to Roman    		52.5%	Medium	
230	
Kth Smallest Element in a BST    		54.1%	Medium	
78	
Subsets    		56.0%	Medium	
238	
Product of Array Except Self    		57.3%	Medium	
347	
Top K Frequent Elements    		57.3%	Medium	
22	
Generate Parentheses    		57.9%	Medium	
46	
Permutations    		58.3%	Medium	
94	
Binary Tree Inorder Traversal