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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
Median of Two Sorted Arrays	hard	-	adobe airbnb alibaba
Regular Expression Matching	hard	-	adobe airbnb alibaba
Maximum Edge Removal for Even Subtrees	hard	-	adobe
Merge K Sorted Lists	hard		adobe airbnb alibaba
K Reverse a linked list	hard	-	adobe amazon apple
Substring with Concatenation of All Words	hard	-	adobe amazon apple
Longest Valid Parentheses	hard	-	adobe amazon apple
Sudoku Solver	hard	-	adobe amazon apple
First Missing Positive	hard	-	adobe amazon apple
Trapping Rain Water	hard	-	adobe affirm airbnb
Wildcard Matching	hard	-	adobe amazon bloomberg
N-Queens	hard	-	adobe amazon apple
Valid Number	hard	-	adobe amazon apple
Minimum Window Substring	hard		adobe airbnb amazon
Largest Rectangle in Histogram	hard	-	adobe amazon bloomberg
Maximal Rectangle	hard	-	adobe amazon bloomberg
Distinct Subsequences	hard	-	adobe amazon barclays
Binary Tree Path Sum - Maximum between any two nodes	hard		adobe amazon appdynamics
Find Minimum in Rotated Sorted Array 2 - Duplicates allowed	hard	-	adobe amazon facebook
Department Top Three Salaries Problem	hard	-	adobe amazon google
Shortest Palindrome 1 - Prepending characters	hard	-	adobe amazon bloomberg
Skyline Problem	hard	-	adobe amazon apple
Contains Duplicate 3 - within k distance and t difference	hard	-	adobe airbnb apple
Basic Calculator 1	hard	-	adobe amazon bloomberg
Sliding Window Maximum	hard	-	adobe alibaba amazon
Find Median from Data Stream	hard		adobe amazon apple
Burst Balloons	hard	-	adobe amazon facebook
Count of Smaller Numbers After Self	hard	-	adobe amazon apple
Longest Increasing Path in a Matrix	hard	-	adobe amazon apple
Strong Password Checker	hard	-	adobe amazon google
Arithmetic Slices II - Subsequence	hard	-	adobe alibaba baidu
LFU Cache	hard	-	adobe alibaba amazon
Human Traffic of Stadium	hard	-	adobe amazon uber
Number of Atoms	hard	-	adobe amazon bytedance
Cherry Pickup	hard	-	adobe akuna-capital amazon
Preimage Size of Factorial Zeroes Function	hard	-	adobe
Vertical Order Traversal of a Binary Tree	hard	-	adobe amazon bloomberg
Brace Expansion II	hard	-	adobe google
Critical Connections in a Network	hard	-	adobe amazon google

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