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19 problems total

Array (172)Sorting (45)Depth First Search (44)Tree (41)Breadth First Search (35)Linked List (28)Stack (27)Recursion (18)Graph Theory (12)Monotonic Stack (8)Queue (6)Shortest Path (2)

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Title	Difficulty	Videos	Companies
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 1 - Count all paths moving right or down	medium		adobe alibaba amazon
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
Number of Islands	medium		adobe affirm alibaba
Maximal Square	medium	-	adobe airbnb amazon
Search a 2D Matrix 2 - Rows and columns are sorted	medium	-	adobe amazon apple
Longest Increasing Path in a Matrix	hard	-	adobe amazon apple
Kth Smallest Element in a Sorted Matrix	medium	-	adobe amazon apple
Max Area of Island	medium	-	adobe affirm amazon
Cherry Pickup	hard	-	adobe akuna-capital amazon
Critical Connections in a Network	hard	-	adobe amazon google