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Top 50 function implementation Interview Questions

The most frequently asked function implementation questions across all roles and companies, ranked by real interview frequency. Updated daily.

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127companies covered
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1
function implementationStart here. 34 questions · ~850 min
Cosine Similarity From ScratchMedium
Practice
Recently asked

Compute cosine similarity for equal-length high-dimensional vectors using dot products and Euclidean norms.

function implementationArraysArray ManipulationCommonwealth Bank of AustraliaLLogicFFever
Power of Two CheckEasy
Practice
Recently asked

Determine if an integer is a power of two using bit manipulation in constant time.

function implementationCubicCyientSparta Systems
Rotate an ArrayEasy
Practice
Recently asked

Rotate an array to the right by k positions in place using reversal and modular arithmetic.

function implementationArraysNorth CarolinaScribdAmazon
Duplicate Detection in ListEasy
Practice
Recently asked

Use a hash set to determine whether a target item appears at least twice in an Uber Eats item list.

function implementationUberElite TechnologyAshby
Linked List or Binary Tree ImplementationEasy
Practice
Recently asked

Reverse an inclusive linked-list segment in place using pointer manipulation with O(n) time and O(1) extra space.

function implementationLinked ListsAndela ProductsJJohnsonArista Networks
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2
coding challenge7 questions · ~175 min
Generate N-Digit Numbers Divisible by 5Easy
Practice
Recently asked

Generate all n-digit integers divisible by 5 using arithmetic range stepping.

coding challengefunction implementationArraysC3 AIC3.ai
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3
Coding3 questions · ~75 min
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4
More topics6 questions · ~150 min
Reverse String Without Built-insEasy
Practice
Recently asked

Reverse a string using basic iteration and swapping, without built-in reverse helpers.

Basic Algorithmsfunction implementationStringsCCypress GFISSagitec Solutions
Find Second Largest ElementEasy
Practice
Recently asked

Scan an array once to return the second-largest distinct value, handling duplicates and invalid cases efficiently.

Basic Algorithmsfunction implementationArraysTEKsystemsLabcorpHashedIn
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