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38 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
Valid Sudoku	medium		adobe amazon apple
Trapping Rain Water	hard		adobe affirm airbnb
Merge Overlapping Intervals	medium		adobe alibaba amazon
Insert Interval	medium		adobe amazon apple
Text Justification	hard	-	airbnb amazon apple
Largest Rectangle in Histogram	hard	-	adobe amazon bloomberg
Construct Binary Tree from Inorder and Preorder Traversal	medium		adobe amazon apple
Construct Binary Tree from Inorder and Postorder Traversal	medium	-	amazon bloomberg facebook
Pascal’s Triangle 1 - Generate first n rows	easy	-	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
Maximum Points on a Line	hard	-	amazon apple bloomberg
Majority Element - Boyer–Moore majority vote algorithm	easy	-	adobe amazon apple
Largest Number From Given Numbers	medium		amazon apple bytedance
Number of Islands	medium		adobe affirm alibaba
Skyline Problem	hard	-	adobe amazon apple
Sliding Window Maximum	hard	-	adobe alibaba amazon
Strobogrammatic Number 2 - Generate for length n	medium	-	cisco facebook google
Flatten 2D Vector	medium	-	airbnb apple facebook
Paint House 1 - N houses with 3 colors with no two adjacent houses with same color color	medium	-	apple linkedin microsoft
Alien Dictionary	hard		airbnb amazon apple
Encode and Decode Strings	medium		bloomberg google microsoft
Best Meeting Point	hard	-	amazon facebook google
Range Sum Query – Mutable	medium	-	amazon facebook google
Moving Average of Last N numbers in a Stream	easy	-	amazon appdynamics bloomberg
Kth Smallest Element in a Sorted Matrix	medium	-	adobe amazon apple
Insert Delete Search and GetRandom in Constant Time 1 - Dupes not allowed	medium	-	adobe affirm amazon
Trapping Rain Water 2	hard	-	amazon apple bytedance
The Maze 1 - Can the Ball Stop at Destination	medium	-	amazon apple facebook
Next Greater Element 1	easy	-	amazon bloomberg facebook
Random Pick with Weight	medium	-	amazon apple atlassian
K-diff Pairs in an Array	medium	-	amazon bloomberg goldman-sachs
Single Element in a Sorted Array	medium	-	amazon apple atlassian
24 Game	hard	-	amazon facebook google
Design HashMap	easy	-	adobe amazon apple
Minimum Increment to Make Array Unique	medium		coursera ixl twitter
Minimum Number of Taps to Open to Water a Garden	hard	-	akuna-capital google twitter

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