Adobe

#	Title	Difficulty	Frequency
1	Two Sum	Easy	29.23
2	Add Two Numbers	Medium	17.21
3	Longest Substring Without Repeating Characters	Medium	3.50
4	Median of Two Sorted Arrays	Hard	6.32
5	Longest Palindromic Substring	Medium	4.92
7	Reverse Integer	Medium	1.85
9	Palindrome Number	Easy	1.87
11	Container With Most Water	Medium	2.57
12	Integer to Roman	Medium	2.33
13	Roman to Integer	Easy	32.75
14	Longest Common Prefix	Easy	7.79
15	3Sum	Medium	11.15
16	3Sum Closest	Medium	6.91
18	4Sum	Medium	2.36
20	Valid Parentheses	Easy	0.37
21	Merge Two Sorted Lists	Easy	1.42
22	Generate Parentheses	Medium	5.70
23	Merge k Sorted Lists	Hard	2.03
25	Reverse Nodes in k-Group	Hard	2.31
26	Remove Duplicates from Sorted Array	Easy	1.05
27	Remove Element	Easy	4.97
29	Divide Two Integers	Medium	21.12
31	Next Permutation	Medium	13.41
33	Search in Rotated Sorted Array	Medium	0.08
34	Find First and Last Position of Element in Sorted Array	Medium	6.62
35	Search Insert Position	Easy	0.83
39	Combination Sum	Medium	1.35
42	Trapping Rain Water	Hard	14.14
44	Wildcard Matching	Hard	3.91
45	Jump Game II	Medium	3.27
48	Rotate Image	Medium	5.14
49	Group Anagrams	Medium	5.14
53	Maximum Subarray	Medium	6.15
54	Spiral Matrix	Medium	9.69
55	Jump Game	Medium	1.01
56	Merge Intervals	Medium	7.07
57	Insert Interval	Medium	2.30
67	Add Binary	Easy	4.10
72	Edit Distance	Medium	2.74
73	Set Matrix Zeroes	Medium	7.85
75	Sort Colors	Medium	4.49
76	Minimum Window Substring	Hard	4.49
77	Combinations	Medium	2.86
84	Largest Rectangle in Histogram	Hard	18.52
86	Partition List	Medium	13.27
88	Merge Sorted Array	Easy	1.98
92	Reverse Linked List II	Medium	3.18
94	Binary Tree Inorder Traversal	Easy	1.20
104	Maximum Depth of Binary Tree	Easy	0.77
118	Pascal's Triangle	Easy	9.70
121	Best Time to Buy and Sell Stock	Easy	2.24
122	Best Time to Buy and Sell Stock II	Medium	1.36
124	Binary Tree Maximum Path Sum	Hard	4.45
125	Valid Palindrome	Easy	0.60
128	Longest Consecutive Sequence	Medium	1.94
139	Word Break	Medium	1.30
143	Reorder List	Medium	10.33
146	LRU Cache	Medium	8.12
148	Sort List	Medium	3.72
164	Maximum Gap	Hard	17.44
169	Majority Element	Easy	0.65
188	Best Time to Buy and Sell Stock IV	Hard	5.47
189	Rotate Array	Medium	1.69
204	Count Primes	Medium	3.31
205	Isomorphic Strings	Easy	1.72
206	Reverse Linked List	Easy	1.44
215	Kth Largest Element in an Array	Medium	1.45
219	Contains Duplicate II	Easy	5.10
227	Basic Calculator II	Medium	8.39
229	Majority Element II	Medium	6.88
234	Palindrome Linked List	Easy	6.01
238	Product of Array Except Self	Medium	0.67
239	Sliding Window Maximum	Hard	2.08
242	Valid Anagram	Easy	0.52
278	First Bad Version	Easy	6.21
287	Find the Duplicate Number	Medium	5.02
344	Reverse String	Easy	1.40
345	Reverse Vowels of a String	Easy	1.83
347	Top K Frequent Elements	Medium	3.87
349	Intersection of Two Arrays	Easy	6.79
383	Ransom Note	Easy	1.73
403	Frog Jump	Hard	13.67
437	Path Sum III	Medium	10.38
441	Arranging Coins	Easy	7.52
443	String Compression	Medium	3.17
450	Delete Node in a BST	Medium	3.49
453	Minimum Moves to Equal Array Elements	Medium	23.78
485	Max Consecutive Ones	Easy	1.98
486	Predict the Winner	Medium	7.89
506	Relative Ranks	Easy	17.28
540	Single Element in a Sorted Array	Medium	2.70
560	Subarray Sum Equals K	Medium	6.89
567	Permutation in String	Medium	9.35
605	Can Place Flowers	Easy	2.72
662	Maximum Width of Binary Tree	Medium	4.85
704	Binary Search	Easy	0.97
790	Domino and Tromino Tiling	Medium	12.48
802	Find Eventual Safe States	Medium	6.26
808	Soup Servings	Medium	26.29
852	Peak Index in a Mountain Array	Medium	6.55
875	Koko Eating Bananas	Medium	4.08
894	All Possible Full Binary Trees	Medium	19.11
980	Unique Paths III	Hard	21.83
983	Minimum Cost For Tickets	Medium	22.71
1027	Longest Arithmetic Subsequence	Medium	23.30
1039	Minimum Score Triangulation of Polygon	Medium	23.78
511	Game Play Analysis I	Easy	4.86
1108	Defanging an IP Address	Easy	4.29
1207	Unique Number of Occurrences	Easy	2.79
2215	Find the Difference of Two Arrays	Easy	3.91
1399	Count Largest Group	Easy	52.13
1480	Running Sum of 1d Array	Easy	1.92
1498	Number of Subsequences That Satisfy the Given Sum Condition	Medium	16.43
1512	Number of Good Pairs	Easy	3.82
1557	Minimum Number of Vertices to Reach All Nodes	Medium	18.40
1672	Richest Customer Wealth	Easy	2.54
1661	Average Time of Process per Machine	Easy	4.56
1667	Fix Names in a Table	Easy	3.50
1710	Maximum Units on a Truck	Easy	19.11
1752	Check if Array Is Sorted and Rotated	Easy	3.63
1757	Recyclable and Low Fat Products	Easy	1.18
1802	Maximum Value at a Given Index in a Bounded Array	Medium	63.85
1857	Largest Color Value in a Directed Graph	Hard	32.54
1876	Substrings of Size Three with Distinct Characters	Easy	16.30
2141	Maximum Running Time of N Computers	Hard	19.29
2275	Largest Combination With Bitwise AND Greater Than Zero	Medium	69.71
2352	Equal Row and Column Pairs	Medium	13.80
2646	Minimize the Total Price of the Trips	Hard	55.20
2658	Maximum Number of Fish in a Grid	Medium	41.40
2742	Painting the Walls	Hard	50.05
2667	Create Hello World Function	Easy	4.37
2763	Sum of Imbalance Numbers of All Subarrays	Hard	71.09
2762	Continuous Subarrays	Medium	29.41