Math Interview Questions

Math Graph Heap (Priority Queue)Number Theory Shortest Path

Rank

#227MediumFrequency: 96%

Basic Calculator II

Math String Stack

Rank

#912MediumFrequency: 87%

Random Pick with Weight

Array Math Binary Search Prefix Sum Randomized

Rank

#50MediumFrequency: 85%

Pow(x, n)

Math Recursion

Rank

#70EasyFrequency: 79%

Climbing Stairs

Math Dynamic Programming Memoization

Rank

#2383EasyFrequency: 73%

Add Two Integers

Rank

#224HardFrequency: 73%

Basic Calculator

Asked at DoorDash

Math String Stack Recursion

Rank

#381HardFrequency: 72%

Insert Delete GetRandom O(1) - Duplicates allowed

Asked at LinkedIn

Rank

#2MediumFrequency: 71%

Add Two Numbers

Linked List Math Recursion

Rank

#1014MediumFrequency: 68%

K Closest Points to Origin

Array Math Divide and Conquer Geometry Sorting Heap (Priority Queue)Quickselect

#10

Rank

#9EasyFrequency: 66%

Palindrome Number

#11

Rank

#415EasyFrequency: 62%

Add Strings

Asked at TikTok

Math String Simulation

#12

Rank

#69EasyFrequency: 56%

Sqrt(x)

Math Binary Search

#13

Rank

#12MediumFrequency: 55%

Integer to Roman

#14

Rank

#273HardFrequency: 55%

Integer to English Words

Math String Recursion

#15

Rank

#3555EasyFrequency: 55%

Final Array State After K Multiplication Operations I

Array Math Heap (Priority Queue)Simulation

#16

Rank

#380MediumFrequency: 51%

Insert Delete GetRandom O(1)

Asked at Amazon

#17

Rank

#398MediumFrequency: 51%

Random Pick Index

Hash Table Math Reservoir Sampling Randomized

#18

Rank

#7MediumFrequency: 48%

Reverse Integer

#19

Rank

#976MediumFrequency: 48%

Minimum Area Rectangle

Array Hash Table Math Geometry Sorting

#20

Rank

#48MediumFrequency: 47%

Rotate Image

Array Math Matrix

#21

Rank

#523MediumFrequency: 43%

Continuous Subarray Sum

Array Hash Table Math Prefix Sum

#22

Rank

#670MediumFrequency: 43%

Maximum Swap

Math Greedy

#23

Rank

#13EasyFrequency: 42%

Roman to Integer

#24

Rank

#62MediumFrequency: 42%

Unique Paths

Math Dynamic Programming Combinatorics

#25

Rank

#66EasyFrequency: 42%

Plus One

Array Math

#26

Rank

#268EasyFrequency: 42%

Missing Number

Array Hash Table Math Binary Search Bit Manipulation Sorting

#27

Rank

#1585MediumFrequency: 42%

The kth Factor of n

Math Number Theory

#28

Rank

#3681MediumFrequency: 42%

Maximum Area Rectangle With Point Constraints I

Array Math Binary Indexed Tree Segment Tree Geometry Sorting Enumeration

#29

Rank

#282HardFrequency: 37%

Expression Add Operators

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Math String Backtracking

#30

Rank

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Math Interview Questions

Master 30 math problems frequently asked in technical interviews. These questions test your understanding of mathconcepts and are essential for coding interview success.

Total Problems

Easy

Medium

Hard

Digit Operations to Make Two Integers Equal

Math Graph Heap (Priority Queue)Number Theory Shortest Path

Rank

#227MediumFrequency: 96%

Basic Calculator II

Math String Stack

Rank

#912MediumFrequency: 87%

Random Pick with Weight

Array Math Binary Search Prefix Sum Randomized

Rank

#50MediumFrequency: 85%

Pow(x, n)

Math Recursion

Rank

#70EasyFrequency: 79%

Climbing Stairs

Math Dynamic Programming Memoization

Rank

#2383EasyFrequency: 73%

Add Two Integers

Rank

#224HardFrequency: 73%

Basic Calculator

Asked at DoorDash

Math String Stack Recursion

Rank

#381HardFrequency: 72%

Insert Delete GetRandom O(1) - Duplicates allowed

Asked at LinkedIn

Rank

#2MediumFrequency: 71%

Add Two Numbers

Linked List Math Recursion

Rank

#1014MediumFrequency: 68%

K Closest Points to Origin

Array Math Divide and Conquer Geometry Sorting Heap (Priority Queue)Quickselect

#10

Rank

#9EasyFrequency: 66%

Palindrome Number

#11

Rank

#415EasyFrequency: 62%

Add Strings

Asked at TikTok

Math String Simulation

#12

Rank

#69EasyFrequency: 56%

Sqrt(x)

Math Binary Search

#13

Rank

#12MediumFrequency: 55%

Integer to Roman

#14

Rank

#273HardFrequency: 55%

Integer to English Words

Math String Recursion

#15

Rank

#3555EasyFrequency: 55%

Final Array State After K Multiplication Operations I

Array Math Heap (Priority Queue)Simulation

#16

Rank

#380MediumFrequency: 51%

Insert Delete GetRandom O(1)

Asked at Amazon

#17

Rank

#398MediumFrequency: 51%

Random Pick Index

Hash Table Math Reservoir Sampling Randomized

#18

Rank

#7MediumFrequency: 48%

Reverse Integer

#19

Rank

#976MediumFrequency: 48%

Minimum Area Rectangle

Array Hash Table Math Geometry Sorting

#20

Rank

#48MediumFrequency: 47%

Rotate Image

Array Math Matrix

#21

Rank

#523MediumFrequency: 43%

Continuous Subarray Sum

Array Hash Table Math Prefix Sum

#22

Rank

#670MediumFrequency: 43%

Maximum Swap

Math Greedy

#23

Rank

#13EasyFrequency: 42%

Roman to Integer

#24

Rank

#62MediumFrequency: 42%

Unique Paths

Math Dynamic Programming Combinatorics

#25

Rank

#66EasyFrequency: 42%

Plus One

Array Math

#26

Rank

#268EasyFrequency: 42%

Missing Number

Array Hash Table Math Binary Search Bit Manipulation Sorting

#27

Rank

#1585MediumFrequency: 42%

The kth Factor of n

Math Number Theory

#28

Rank

#3681MediumFrequency: 42%

Maximum Area Rectangle With Point Constraints I

Array Math Binary Indexed Tree Segment Tree Geometry Sorting Enumeration

#29

Rank

#282HardFrequency: 37%

Expression Add Operators