All Problems

3944 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)Algorithms(3944)Database(305)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)

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Title	Difficulty	Videos	Companies
0-1 Knapsack Problem	medium	-
0-1 Knapsack with Gold Bars	medium	-
2-CNF Boolean Satisfiability Problem	hard	-	dropbox
2Sum - 0 - closest - Find two elements whose sum is closest to zero	medium	-
3Sum - Classic	medium	-	microsoft
4Sum - Output in Sorted Order	medium	-
8-Puzzle Solver	hard	-	airbnb
Add one to a number without using plus or minus sign	easy	-
Add Two Numbers represented as Linked List	medium	-
Add two numbers without using the plus operator	hard	-
Aggregate Sum Over Partitions With Parts at least K	medium	-
Aho-Corasick Algorithm for Multi-Pattern String Search	hard	-
Alice Joins Probability Student Club by Calculating Expected Values of Probabilistic Games	hard	-	two-sigma
All Permutations of a String 3 in Lexicographic Order	easy	-
All Permutations of a String with distinct characters	medium	-
All Permutations of a String with duplicate characters	medium	-
Amount of New Area Painted Each Day	hard	-
Apply Substitutions	medium	-
Approximate Median in Sub-linear Time	medium	-	dropbox
Area of intersection of two rectangles	easy	-	google
Arrange Given Number To Form The Biggest Number Possible	medium	-	uber
Array With Elements Not Equal to Average of Neighbors	medium	-
Array-based Trie Implementation	medium	-
Assign Elements to Groups with Constraints	medium	-
Assign Mice To Holes	easy	-	amazon
Autocomplete Suggestion System	medium	-	twitter
Avoid Overflow when calculating Mid in Binary Search	easy	-
Balance Parentheses with Minimum Insertions and Deletions	hard	-	facebook
Balanced delimiters in an expression	easy	-	uber
Bartender Drink Optimization	medium	-	amazon
Basic Euclidean Algorithm to find GCD of two numbers using modulo operator	medium	-
Best Position for a Service Centre	hard	-	reddit
Best Time To Buy And Sell Stock - Any number of times - Overlapping Transactions	medium	-
Binary Search on a linked list	medium	-
Binary Search Without Multiplication, Division and Bit-shift Operations	hard	-	netflix
Binary Tree Bottom View	medium	-	yelp
Binary Tree Left Side View	medium	-
Binary Tree Level Order Traversal	medium		microsoft
Binary Tree Path Sum - Find all paths between any two nodes	medium	-
Binary Tree Path Sum - Maximum between any two leaves	medium	-
Binary Tree Path Sum - Maximum Sum Leaf to Root path	medium	-
Binary Tree Path Sum - Maximum Sum Root to Leaf path	medium	-
Binary Tree Path Sum - Minimum Sum Root to Leaf path	easy	-	apple
Binary Tree Top View	medium	-
Bishop diagonally attack on chess board	medium	-	google
Blackjack Optimal Strategy with Known Card Sequence	hard	-	MIT
Bloom Filter Implementation	medium	-	triplebyte
Blum Floyd Pratt Rivest Tarjan Algorithm	medium	-
Boolean Parenthesization Problem	hard	-	quantcast
Boyer-Moore String Searching	medium	-

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