Math Interview Questions

Math Graph Heap (Priority Queue)Number Theory Shortest Path

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#227MediumFrequency: 96%

Basic Calculator II

Math String Stack

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#912MediumFrequency: 87%

Random Pick with Weight

Array Math Binary Search Prefix Sum Randomized

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#50MediumFrequency: 85%

Pow(x, n)

Math Recursion

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#70EasyFrequency: 79%

Climbing Stairs

Math Dynamic Programming Memoization

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#2383EasyFrequency: 73%

Add Two Integers

Math

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#224HardFrequency: 73%

Basic Calculator

Asked at DoorDash

Math String Stack Recursion

Rank

#381HardFrequency: 72%

Insert Delete GetRandom O(1) - Duplicates allowed

Asked at LinkedIn

Array Hash Table Math Design Randomized

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#2MediumFrequency: 71%

Add Two Numbers

Linked List Math Recursion

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#1014MediumFrequency: 68%

K Closest Points to Origin

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

#10

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#9EasyFrequency: 66%

Palindrome Number

Math

#11

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#415EasyFrequency: 62%

Add Strings

Asked at TikTok

Math String Simulation

#12

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#69EasyFrequency: 56%

Sqrt(x)

Math Binary Search

#13

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#12MediumFrequency: 55%

Integer to Roman

Hash Table Math String

#14

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#273HardFrequency: 55%

Integer to English Words

Math String Recursion

#15

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#3555EasyFrequency: 55%

Final Array State After K Multiplication Operations I

Array Math Heap (Priority Queue)Simulation

#16

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#380MediumFrequency: 51%

Insert Delete GetRandom O(1)

Asked at Amazon

Array Hash Table Math Design Randomized

#17

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#398MediumFrequency: 51%

Random Pick Index

Hash Table Math Reservoir Sampling Randomized

#18

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#7MediumFrequency: 48%

Reverse Integer

Math

#19

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#976MediumFrequency: 48%

Minimum Area Rectangle

Array Hash Table Math Geometry Sorting

#20

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#48MediumFrequency: 47%

Rotate Image

Array Math Matrix

#21

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#523MediumFrequency: 43%

Continuous Subarray Sum

Array Hash Table Math Prefix Sum

#22

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#670MediumFrequency: 43%

Maximum Swap

Math Greedy

#23

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#13EasyFrequency: 42%

Roman to Integer

Hash Table Math String

#24

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#62MediumFrequency: 42%

Unique Paths

Math Dynamic Programming Combinatorics

#25

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#66EasyFrequency: 42%

Plus One

Array Math

#26

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#268EasyFrequency: 42%

Missing Number

Array Hash Table Math Binary Search Bit Manipulation Sorting

#27

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#1585MediumFrequency: 42%

The kth Factor of n

Math Number Theory

#28

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#3681MediumFrequency: 42%

Maximum Area Rectangle With Point Constraints I

Array Math Binary Indexed Tree Segment Tree Geometry Sorting Enumeration

#29

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#282HardFrequency: 37%

Expression Add Operators