Uber

#	Title	Difficulty	Frequency
1	Two Sum	Easy	1.08
2	Add Two Numbers	Medium	0.62
3	Longest Substring Without Repeating Characters	Medium	0.39
5	Longest Palindromic Substring	Medium	0.80
7	Reverse Integer	Medium	1.85
13	Roman to Integer	Easy	6.01
17	Letter Combinations of a Phone Number	Medium	1.56
20	Valid Parentheses	Easy	1.48
21	Merge Two Sorted Lists	Easy	0.63
25	Reverse Nodes in k-Group	Hard	2.31
29	Divide Two Integers	Medium	2.58
33	Search in Rotated Sorted Array	Medium	0.19
35	Search Insert Position	Easy	0.83
45	Jump Game II	Medium	8.82
49	Group Anagrams	Medium	0.84
54	Spiral Matrix	Medium	1.61
56	Merge Intervals	Medium	4.58
59	Spiral Matrix II	Medium	7.55
68	Text Justification	Hard	19.71
73	Set Matrix Zeroes	Medium	2.90
79	Word Search	Medium	4.50
83	Remove Duplicates from Sorted List	Easy	1.72
91	Decode Ways	Medium	3.12
95	Unique Binary Search Trees II	Medium	14.29
127	Word Ladder	Hard	3.58
128	Longest Consecutive Sequence	Medium	0.87
152	Maximum Product Subarray	Medium	3.23
189	Rotate Array	Medium	0.75
212	Word Search II	Hard	5.32
215	Kth Largest Element in an Array	Medium	1.45
217	Contains Duplicate	Easy	0.47
218	The Skyline Problem	Hard	72.25
234	Palindrome Linked List	Easy	3.43
239	Sliding Window Maximum	Hard	2.08
295	Find Median from Data Stream	Hard	3.65
347	Top K Frequent Elements	Medium	3.87
355	Design Twitter	Medium	11.61
362	Design Hit Counter	Medium	99.78
380	Insert Delete GetRandom O(1)	Medium	14.16
394	Decode String	Medium	3.79
399	Evaluate Division	Medium	25.01
473	Matchsticks to Square	Medium	18.49
474	Ones and Zeroes	Medium	10.76
518	Coin Change II	Medium	0.64
529	Minesweeper	Medium	64.19
564	Find the Closest Palindrome	Hard	193.16
692	Top K Frequent Words	Medium	39.51
815	Bus Routes	Hard	189.50
863	All Nodes Distance K in Binary Tree	Medium	6.70
876	Middle of the Linked List	Easy	1.24
1046	Last Stone Weight	Easy	5.05
1140	Stone Game II	Medium	64.19
1353	Maximum Number of Events That Can Be Attended	Medium	66.62
2035	Partition Array Into Two Arrays to Minimize Sum Difference	Hard	65.72
2127	Maximum Employees to Be Invited to a Meeting	Hard	244.12
2158	Amount of New Area Painted Each Day	Hard	77.77
2468	Split Message Based on Limit	Hard	69.31
2493	Divide Nodes Into the Maximum Number of Groups	Hard	150.75
2551	Put Marbles in Bags	Hard	47.38