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Frontend Engineer Interview Preparation

Master frontend engineering interviews with JavaScript, React, and web development focused questions.

Key Skills & Technologies

JavaScript/TypeScript
React/Vue/Angular
CSS/HTML
Web APIs
Performance Optimization
Browser Compatibility

Interview Focus Areas

DOM manipulation and event handling
Asynchronous JavaScript (Promises, async/await)
Frontend performance optimization
Component design patterns
State management
Browser APIs and compatibility

Top Hiring Companies

MetaGoogleNetflixAirbnbUber

Top Frontend Engineer Coding Questions

Practice these 20 most relevant coding problems for frontend engineer interviews.

#1EasyFrequency: 100%

Two Sum

Asked at Google
ArrayHash Table
#1
Recommended
#3594MediumFrequency: 100%

Identify the Largest Outlier in an Array

Asked at Amazon
ArrayHash TableCountingEnumeration
#2
Recommended
#1371MediumFrequency: 100%

Minimum Remove to Make Valid Parentheses

Asked at Meta
StringStack
#3
Recommended
#1352HardFrequency: 100%

Maximum Profit in Job Scheduling

Asked at Apple
ArrayBinary SearchDynamic ProgrammingSorting
#4
Recommended
#232EasyFrequency: 100%

Implement Queue using Stacks

Asked at TikTok
StackDesignQueue
#5
Recommended
#3613MediumFrequency: 100%

Maximize Amount After Two Days of Conversions

Asked at Uber
ArrayStringDepth-First SearchBreadth-First SearchGraph
#6
Recommended
#716HardFrequency: 100%

Max Stack

Asked at LinkedIn
StackLinked ListDesignDoubly-Linked ListOrdered Set
#7
Recommended
#1085MediumFrequency: 100%

The Earliest Moment When Everyone Become Friends

Asked at Oracle
ArrayUnion FindSorting
#8
Recommended
#392EasyFrequency: 100%

Is Subsequence

Asked at Oracle
Two PointersStringDynamic Programming
#9
Recommended
#64MediumFrequency: 100%

Minimum Path Sum

Asked at Salesforce
ArrayDynamic ProgrammingMatrix
#10
Recommended
#817EasyFrequency: 100%

Design HashMap

Asked at DoorDash
ArrayHash TableLinked ListDesignHash Function
#11
Recommended
#322MediumFrequency: 100%

Coin Change

Asked at Airbnb
ArrayDynamic ProgrammingBreadth-First Search
#12
Recommended
#42HardFrequency: 100%

Trapping Rain Water

Asked at PayPal
ArrayTwo PointersStackDynamic ProgrammingMonotonic Stack
#13
Recommended
#3681MediumFrequency: 100%

Maximum Area Rectangle With Point Constraints I

Asked at Infosys
ArrayMathBinary Indexed TreeSegment TreeGeometrySortingEnumeration
#14
Recommended
#1056MediumFrequency: 100%

Capacity To Ship Packages Within D Days

Asked at Databricks
ArrayBinary Search
#15
Recommended
#694MediumFrequency: 98%

Number of Distinct Islands

Asked at Flipkart
Hash TableDepth-First SearchBreadth-First SearchUnion FindHash Function
#16
Recommended
#314MediumFrequency: 97%

Binary Tree Vertical Order Traversal

Asked at Meta
Hash TableTreeDepth-First SearchBreadth-First SearchSortingBinary Tree
#17
Recommended
#227MediumFrequency: 96%

Basic Calculator II

Asked at Meta
StringStackMath
#18
Recommended
#680EasyFrequency: 95%

Valid Palindrome II

Asked at Meta
Two PointersStringGreedy
#19
Recommended
#833HardFrequency: 95%

Bus Routes

Asked at Uber
ArrayHash TableBreadth-First Search
#20
Recommended

All Interview Questions

Browse questions by company and difficulty level

Topics & Algorithms

Practice by specific algorithm and data structure topics

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