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92 problems total

Array (1906)Sorting (442)Depth First Search (316)Database (301)Breadth First Search (241)Tree (241)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)

All Topics(4301)Database(305)Java(0)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)Algorithms(3945)

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Title	Difficulty	Videos	Companies
Find Coin Denominations from Change Count	medium	-	snapchat
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
3Sum0 - Find three elements in an array that sum to a zero	medium		adobe akuna-capital alibaba
Generate Parentheses	medium	-	adobe alibaba amazon
Search in Rotated Sorted Array	medium		adobe alibaba amazon
Valid Sudoku	medium		adobe amazon apple
Sudoku Solver	hard	-	adobe amazon apple
Combination Sum 1	medium		airbnb akuna-capital amazon
Combination Sum 2 - Cant Reuse same element	medium	-	adobe amazon apple
Trapping Rain Water	hard		adobe affirm airbnb
Wildcard Matching	hard	-	adobe amazon bloomberg
Group Anagrams	medium		adobe affirm amazon
Spiral Matrix 1 - Return	medium		adobe amazon apple
Merge Overlapping Intervals	medium		adobe alibaba amazon
Unique Paths in Grid 1 - Count all paths moving right or down	medium		adobe alibaba amazon
Unique Paths in Grid 2 - Count all paths moving right or down with obstacles	medium	-	amazon apple bloomberg
Text Justification	hard	-	airbnb amazon apple
Minimum Window Substring	hard		adobe airbnb amazon
Word Search 1 - Find if word exists	medium		adobe amazon apple
Decode Ways	medium		adobe amazon apple
Restore IP Addresses	medium	-	adobe amazon apple
Unique BSTs 1 - Count	medium	-	adobe amazon apple
Best Time To Buy And Sell Stock 1 - only one transaction	easy		adobe akuna-capital alibaba
Word Ladder 1 - Get Ladder Length	hard	-	affirm amazon apple
Copy List with Random Pointer	medium	-	adobe amazon apple
Word Break 1 - Check if word is breakable	medium		adobe amazon apple
Word Break 2 - Construct a sentence	hard		amazon apple audible
Design LRU Cache	medium	-	adobe alibaba amazon
Reverse Words in a String	medium	-	amazon apple bloomberg
Min Stack	medium	-	adobe amazon apple
Friend Words - One Edit Distance	medium	-	amazon facebook google
Majority Element - Boyer–Moore majority vote algorithm	easy	-	adobe amazon apple
Rotate an Array to Right	medium	-	amazon bloomberg cisco
Number of Islands	medium		adobe affirm alibaba
Reverse Linked List	easy		adobe alibaba amazon
Course Schedule 2 - Get Ordered Courses	medium	-	airbnb amazon apple
Word Search 2 - Return All Words	hard		airbnb amazon apple
Kth Largest Element in an Array	medium	-	adobe airbnb alibaba
Basic Calculator 1	hard	-	adobe amazon bloomberg
Basic Calculator 2 Problem	medium	-	airbnb amazon apple
Palindrome Linked List	easy	-	adobe amazon apple
Product of Array Except Self	medium		adobe amazon apple
Valid Anagram	easy		amazon apple bloomberg
Maximum Intervals Overlap Count	medium		amazon apple atlassian
Paint House 2 - N houses with k colors with no two adjacent houses with same color color	hard	-	facebook google linkedin
Alien Dictionary	hard		airbnb amazon apple
Closest Binary Search Tree Value	easy	-	amazon bloomberg facebook
Expression Add Operators	hard	-	apple bytedance facebook

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