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113 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
Two Sum	easy		adobe aetion affirm
Longest Substring Without Repeating Characters	medium		adobe alation alibaba
Median of Two Sorted Arrays	hard	-	adobe airbnb alibaba
Convert String to Integer atoi	medium	-	adobe amazon apple
Container With Most Water	medium		adobe amazon apple
Roman To Integer	easy		adobe amazon apple
3Sum0 - Find three elements in an array that sum to a zero	medium		adobe akuna-capital alibaba
3Sum - Closest	medium	-	adobe amazon apple
Letter Combinations of a Phone Number	medium	-	amazon apple atlassian
Remove Nth Node From End of List	medium		adobe amazon apple
Valid Parentheses	easy		adobe airbnb akuna-capital
Merge K Sorted Lists	hard		adobe airbnb alibaba
Search in Rotated Sorted Array	medium		adobe alibaba amazon
Combination Sum 1	medium		airbnb akuna-capital amazon
Trapping Rain Water	hard	-	adobe affirm airbnb
Wildcard Matching	hard	-	adobe amazon bloomberg
Permutations of Array 1	medium	-	adobe amazon apple
Group Anagrams	medium		adobe affirm amazon
Implement Power Function 1	medium	-	adobe amazon apple
Maximum Subarray Sum	medium		adobe alibaba 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
Minimum Path Sum in matrix	medium	-	adobe amazon apple
Climbing Stairs - Take atmost 2 Steps	easy		adobe alibaba amazon
Edit Distance	medium	-	adobe amazon apple
Minimum Window Substring	hard		adobe airbnb amazon
Subsets 1	medium		adobe amazon apple
Merge Two Sorted Arrays	easy	-	adobe amazon apple
Decode Ways	medium		adobe amazon apple
Validate Binary Search Tree	medium		adobe amazon apple
Recover Binary Search Tree	medium	-	amazon bloomberg facebook
Maximum Depth of Binary Tree	easy		adobe amazon apple
Pascal’s Triangle 1 - Generate first n rows	easy	-	adobe amazon apple
Pascal’s Triangle 2 - Return nth row	easy	-	amazon goldman-sachs google
Minimum Triangle path sum from top to bottom	medium	-	amazon apple bloomberg
Best Time To Buy And Sell Stock 1 - only one transaction	easy		adobe akuna-capital alibaba
Best Time To Buy And Sell Stock 2 - Any number of times	medium	-	adobe amazon apple
Linked List Cycle 1 - Detect Cycle	easy		adobe amazon apple
Design LRU Cache	medium	-	adobe alibaba amazon
Find Minimum in Rotated Sorted Array	medium		amazon apple bloomberg
Min Stack	medium	-	adobe amazon apple
Intersection of Two Linked Lists	easy	-	airbnb alibaba amazon
Fraction to Recurring Decimal	medium	-	airbnb amazon apple
2Sum 2 – Input array is sorted	medium		amazon apple bloomberg
Rotate an Array to Right	medium	-	amazon bloomberg cisco
House Robber	medium		adobe airbnb amazon
Number of Islands	medium		adobe affirm alibaba
Count Primes	medium	-	adobe amazon apple

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