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Title	Difficulty	Videos	Companies
Dungeon Game	hard	-	amazon google microsoft
Combine Two Tables Problem	easy	-	adobe amazon apple
Second Highest Salary Problem	medium	-	adobe amazon apple
Nth Highest Salary Problem	medium	-	adobe amazon apple
Rank Scores	medium	-	adobe amazon apple
Largest Number From Given Numbers	medium		amazon apple bytedance
Consecutive Numbers Problem	medium	-	amazon apple
Employees Earning More Than Their Managers Problem	easy	-	adobe amazon apple
Duplicate Emails Problem	easy	-
Customers Who Never Order Problem	easy	-	amazon
Department Highest Salary Problem	medium	-	amazon apple oracle
Department Top Three Salaries Problem	hard	-	adobe amazon google
Reverse Words in a String 2	medium	-	amazon google microsoft
Repeated DNA Sequences	medium	-	amazon apple google
Best Time To Buy And Sell Stock 4 - at most k times	hard	-	amazon apple bloomberg
Rotate an Array to Right	medium	-	amazon bloomberg cisco
Reverse Bits	easy		airbnb amazon apple
Number of 1 Bits	easy		adobe amazon apple
Word Frequency from File	medium	-	adobe amazon facebook
Valid Phone Numbers Problem	easy	-	apple
Transpose File Problem	medium	-
Tenth Line Problem	easy	-	adobe apple google
Delete Duplicate Emails Problem	easy	-	amazon
Rising Temperature Problem	easy	-	adobe
House Robber	medium		adobe airbnb amazon
Binary Tree Right Side View	medium	-	adobe amazon apple
Number of Islands	medium		adobe affirm alibaba
Bitwise AND of Numbers Range	medium	-	adobe
Happy Number	easy	-	adobe airbnb amazon
Remove Linked List Elements	easy	-	adobe amazon apple
Count Primes	medium	-	adobe amazon apple
Isomorphic Strings	easy		adobe amazon bloomberg
Reverse Linked List	easy		adobe alibaba amazon
Course Schedule 1 - Is it Possible	medium		amazon apple bloomberg
Implement Trie	medium		amazon apple bloomberg
Minimum Size Subarray Sum	medium	-	amazon apple bloomberg
Course Schedule 2 - Get Ordered Courses	medium	-	airbnb amazon apple
Design Add and Search Words Data Structure	medium		airbnb amazon apple
Word Search 2 - Return All Words	hard		airbnb amazon apple
House Robber 2 - Houses in circle	medium		amazon ebay google
Shortest Palindrome 1 - Prepending characters	hard	-	adobe amazon bloomberg
Kth Largest Element in an Array	medium	-	adobe airbnb alibaba
Combination Sum 3 - Find k numbers summing up to n	medium	-	amazon bloomberg google
Contains Duplicate 1 - Check if array has duplicates	easy		adobe airbnb amazon
Skyline Problem	hard	-	adobe amazon apple
Contains Duplicate 2 - within k distance	easy	-	adobe airbnb amazon
Contains Duplicate 3 - within k distance and t difference	hard	-	adobe airbnb apple
Maximal Square	medium	-	adobe airbnb amazon
Count Complete Tree Nodes	easy	-	amazon bloomberg bytedance
Rectangle Area - Total area of two rectangles	medium	-	apple facebook microsoft

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