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Explain arrays and memory layout

Last updated: Mar 29, 2026

Quick Overview

This question evaluates understanding of arrays, their contiguous memory representation including element size, alignment and indexing arithmetic, along with time-complexity analysis for access, insertion and deletion and implications for cache locality.

  • medium
  • xAI
  • Coding & Algorithms
  • Software Engineer

Explain arrays and memory layout

Company: xAI

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Technical Screen

What is an array? How is an array represented in memory (contiguous layout, element size and alignment, indexing arithmetic). Analyze time complexities for access, insertion, and deletion, and discuss cache locality implications.

Quick Answer: This question evaluates understanding of arrays, their contiguous memory representation including element size, alignment and indexing arithmetic, along with time-complexity analysis for access, insertion and deletion and implications for cache locality.

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|Home/Coding & Algorithms/xAI

Explain arrays and memory layout

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xAI
Aug 12, 2025, 12:00 AM
mediumSoftware EngineerTechnical ScreenCoding & Algorithms
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What is an array? How is an array represented in memory (contiguous layout, element size and alignment, indexing arithmetic). Analyze time complexities for access, insertion, and deletion, and discuss cache locality implications.

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