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914 problems total

All Topics(4302)Algorithms(0)Database(0)Networking(0)Object Oriented Design(0)Programming Languages(0)System Design(0)

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Title	Difficulty	Videos	Companies
2-CNF Boolean Satisfiability Problem	hard	-	dropbox
8-Puzzle Solver	hard	-	airbnb
Add two numbers without using the plus operator	hard	-
Aho-Corasick Algorithm for Multi-Pattern String Search	hard	-
Alice Joins Probability Student Club by Calculating Expected Values of Probabilistic Games	hard	-	two-sigma
Amount of New Area Painted Each Day	hard	-
Analyze Organization Hierarchy	hard	-
Balance Parentheses with Minimum Insertions and Deletions	hard	-	facebook
Best Position for a Service Centre	hard	-	reddit
Binary Search Without Multiplication, Division and Bit-shift Operations	hard	-	netflix
Blackjack Optimal Strategy with Known Card Sequence	hard	-	MIT
Boolean Parenthesization Problem	hard	-	quantcast
Check If Digits Are Equal in String After Operations II	hard	-
Chess King Check Detector	hard	-	Oracle
Concatenated Divisibility	hard	-
Construct Cartesian Tree from Sequence	hard	-	netflix
Convert Binary Tree into Threaded Binary Tree	hard	-
Count Beautiful Numbers	hard	-
Count Connected Components in LCM Graph	hard	-
Count elements in range in sorted matrix	hard	-	google
Count Knight's Tour	hard	-	google
Count Non-Decreasing Subarrays After K Operations	hard	-
Count Numbers with Non-Decreasing Digits	hard	-
Count Substrings Divisible By Last Digit	hard	-
Count the number of 2s between 0 and n	hard	-
Count the Number of Arrays with K Matching Adjacent Elements	hard	-
Create Sorted Array through Instructions	hard	-
De Bruijn Sequence	hard	-	LinkedIn
Delivering Boxes from Storage to Ports	hard	-
Design an Array Statistics Tracker	hard	-
Design and implement Connect 4	hard	-	salesforce
Distributed Wikipedia Crawler System Design	hard	-	google
Divide array into two subsets with minimum difference	hard	-	microsoft
Dodgeball Team Division	hard	-	twitter
Equal Sum Grid Partition II	hard	-
Fancy Sequence	hard	-
Find a Value of a Mysterious Function Closest to Target	hard	-
Find all starting indices of anagrams of a word in a string	hard	-
Find Circular Gift Exchange Chains	hard	-
Find Invalid IP Addresses	hard	-
Find largest 1M numbers in 1B numbers	hard	-
Find Smallest window that contains all characters of string itself	hard	-
Find Sum of Array Product of Magical Sequences	hard	-
Find the Lexicographically Largest String From the Box II	hard	-
Find Time Required to Eliminate Bacterial Strains	hard	-
Find X Value of Array II	hard	-
First Letter Capitalization II	hard	-
Frequencies of Shortest Supersequences	hard	-
Ghost Word Game Winning Strategy	hard	-	two-sigma
Implement 3 stacks in 1 list	hard	-	microsoft

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