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355 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
Amount of New Area Painted Each Day	hard	-
Array With Elements Not Equal to Average of Neighbors	medium	-
Check if Duplicates Exist Within K Manhattan Distance in Matrix	medium	-
Check if two given matrices are identical	easy	-
Chess King Check Detector	hard	-	Oracle
Construct ancestor matrix from a binary tree	medium	-
Construct binary tree from an ancestor matrix	medium	-
Count Cells in Overlapping Horizontal and Vertical Substrings	medium	-
Design Spreadsheet	medium	-
Dot Product of 2 Sparse Vectors	medium	-
Equal Sum Grid Partition I	medium	-
Equal Sum Grid Partition II	hard	-
Fill a Special Grid	medium	-
Find distinct elements common to all rows of a matrix	medium	-
Find longest Snake sequence in a given matrix	medium	-
Find the median in a row-wise sorted 2D matrix	medium	-
Find Unique Binary String	medium
Freivald’s Algorithm to check if a matrix is product of two	medium	-
Largest 1-Bordered Rectangle	hard	-
Length of Longest V-Shaped Diagonal Segment	hard	-
Longest Palindromic Subsequence - Get Subsequence	medium	-
Matrix Chain Multiplication	medium	-
Matrix Chain Multiplication 2 - Print brackets	medium	-
Maximum Alternating Subsequence Sum	medium	-
Maximum Amount of Money Robot Can Earn	medium	-
Maximum Number of Matching Indices After Right Shifts	easy	-
Maximum Sum Submatrix	medium	-
Maximum Sum With at Most K Elements	medium	-
Minimum Cost to Make at Least One Valid Path in a Grid	hard	-	google
Minimum Operations to Make Columns Strictly Increasing	easy	-
Path With Minimum Effort	medium	-
Process Tasks Using Servers	medium	-
Return all diagonals of a rectangular two-dimensional matrix	medium	-
Rotting Oranges	medium	-
Row with maximum number of 1s in sorted binary matrix	medium	-
Strassen Matrix Multiplication Algorithm	medium	-
Valid Sudoku	medium	-	adobe amazon apple
Sudoku Solver	hard	-	adobe amazon apple
Rotate n x n matrix by 90 degrees	medium		adobe akuna-capital amazon
Spiral Matrix 1 - Return	medium		adobe amazon apple
Spiral Matrix 2 - Generate	medium		adobe amazon apple
Unique Paths in Grid - Count all paths moving right or down or diagonally	medium	-
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
Set Matrix Zeros	medium		adobe amazon apple
Search a 2D Matrix 1 - Elements sorted row-wise and first integer of each row is greater than last element of previous row is greater than last element of previous row	medium	-	adobe amazon apple
Word Search 1 - Find if word exists	medium		adobe amazon apple
Maximal Rectangle	hard	-	adobe amazon bloomberg
Surrounded Regions	medium	-	amazon ebay facebook

Showing 1 to 50 of 355 results