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39 problems total

Array (1905)Sorting (440)Depth First Search (316)Database (301)Breadth First Search (241)Tree (240)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)

All Topics(4301)Database(305)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)Algorithms(3944)

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Title	Difficulty	Videos	Companies
Binary Tree Bottom View	medium	-	yelp
Two Sum	easy		adobe aetion affirm
Longest Substring Without Repeating Characters	medium		adobe alation alibaba
Longest Common Prefix in array of string	easy	-	adobe alibaba amazon
Letter Combinations of a Phone Number	medium	-	amazon apple atlassian
Generate Parentheses	medium	-	adobe alibaba amazon
Combination Sum 1	medium		airbnb akuna-capital amazon
Group Anagrams	medium		adobe affirm amazon
Merge Overlapping Intervals	medium		adobe alibaba amazon
Word Ladder 2 - Get all the ladders	hard	-	amazon apple bloomberg
Word Ladder 1 - Get Ladder Length	hard	-	affirm amazon apple
Word Break 1 - Check if word is breakable	medium		adobe amazon apple
Reverse Words in a String	medium	-	amazon apple bloomberg
Word Frequency from File	medium	-	adobe amazon facebook
Isomorphic Strings	easy		adobe amazon bloomberg
Reverse Linked List	easy		adobe alibaba amazon
Course Schedule 1 - Is it Possible	medium		amazon apple bloomberg
Skyline Problem	hard	-	adobe amazon apple
Sliding Window Maximum	hard	-	adobe alibaba amazon
Valid Anagram	easy		amazon apple bloomberg
Maximum Intervals Overlap Count	medium		amazon apple atlassian
Integer to English Words	hard		amazon apple barclays
Reconstruct Itinerary	hard	-	amazon apple bloomberg
Top K Frequent Elements	medium		amazon apple bloomberg
Intersection of Two Arrays 1 - Unique Elements	easy		amazon apple bloomberg
Design Twitter (Data Structure Design)	medium	-	amazon doordash oracle
Insert Delete Search and GetRandom in Constant Time 1 - Dupes not allowed	medium	-	adobe affirm amazon
Insert Delete Search and GetRandom in Constant Time 2 - Duplicates allowed	hard	-	affirm amazon apple
Decode String	medium	-	alibaba amazon appdynamics
String Compression	medium	-	akuna-capital amazon apple
Random Pick with Weight	medium	-	amazon apple atlassian
Find the Closest Palindrome	hard	-	amazon facebook google
Minimum Index Sum of Two Lists	easy	-	oracle yelp
Top K Frequent Words	medium	-	adobe amazon apple
Letter Case Permutation	medium	-	amazon bloomberg facebook
Active Businesses	medium	-	yelp
Filter Restaurants by Vegan-Friendly, Price and Distance	medium	-	yelp
Destination City	easy	-	yelp
Check If a Word Occurs As a Prefix of Any Word in a Sentence	easy	-	yelp

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