Matrix Interview Questions

Master 22 matrix problems frequently asked in technical interviews. These questions test your understanding of matrixconcepts and are essential for coding interview success.

Total Problems

Easy

Medium

Hard

Minimum Path Sum

Asked at Salesforce

Array Dynamic Programming Matrix

Rank

#772MediumFrequency: 83%

Construct Quad Tree

Asked at Infosys

Array Divide and Conquer Tree Matrix

Rank

#200MediumFrequency: 82%

Number of Islands

Asked at Amazon

Array Depth-First Search Breadth-First Search Union Find Matrix

Rank

#348MediumFrequency: 81%

Design Tic-Tac-Toe

Asked at PayPal

Array Hash Table Design Matrix Simulation

Rank

#733EasyFrequency: 81%

Flood Fill

Asked at Infosys

Array Depth-First Search Breadth-First Search Matrix

Rank

#329HardFrequency: 79%

Longest Increasing Path in a Matrix

Asked at Flipkart

Array Dynamic Programming Depth-First Search Breadth-First Search Graph Topological Sort Memoization Matrix

Rank

#74MediumFrequency: 78%

Search a 2D Matrix

Asked at Apple

Array Binary Search Matrix

Rank

#2089MediumFrequency: 73%

Maximum Matrix Sum

Asked at Airbnb

Array Greedy Matrix

Rank

#2711HardFrequency: 73%

Minimum Time to Visit a Cell In a Grid

Asked at Flipkart

Array Breadth-First Search Graph Heap (Priority Queue)Matrix Shortest Path

Rank

#1171MediumFrequency: 69%

Shortest Path in Binary Matrix

Asked at Meta

Array Breadth-First Search Matrix

#10

Rank

#1036MediumFrequency: 68%

Rotting Oranges

Asked at Databricks

Array Breadth-First Search Matrix

#11

Rank

#54MediumFrequency: 63%

Spiral Matrix

Asked at Uber

Array Matrix Simulation

#12

Rank

#79MediumFrequency: 63%

Word Search

Asked at Uber

Array String Backtracking Matrix

#13

Rank

#777EasyFrequency: 61%

Toeplitz Matrix

Asked at Infosys

Array Matrix

#14

Rank

#854HardFrequency: 60%

Making A Large Island

Asked at Meta

Array Depth-First Search Breadth-First Search Union Find Matrix

#15

Rank

#48MediumFrequency: 59%

Rotate Image

Asked at Infosys

Array Math Matrix

#16

Rank

#1147MediumFrequency: 55%

Flip Columns For Maximum Number of Equal Rows

Asked at Microsoft

Array Hash Table Matrix

#17

Rank

#63MediumFrequency: 48%

Unique Paths II

Asked at Infosys

Array Dynamic Programming Matrix

#18

Rank

#498MediumFrequency: 43%

Diagonal Traverse

Asked at Meta

Array Matrix Simulation

#19

Rank

#378MediumFrequency: 37%

Kth Smallest Element in a Sorted Matrix

Asked at Meta

Array Binary Search Sorting Heap (Priority Queue)Matrix

#20

Rank

#36MediumFrequency: 36%

Valid Sudoku

Asked at Amazon

Array Hash Table Matrix

#21

Rank

#1257HardFrequency: 34%

Rank Transform of a Matrix

Asked at Salesforce

Array Union Find Graph Topological Sort Sorting Matrix

#22

Rank

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Matrix Interview Questions

Master 22 matrix problems frequently asked in technical interviews. These questions test your understanding of matrixconcepts and are essential for coding interview success.

Total Problems

Easy

Medium

Hard