Grokking 75: Top Coding Interview Questions
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Introduction to Arrays
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What Is an Array?

An array is a collection of items (often called elements) stored in a single block of memory. Each item in an array is of the same type (for example, all integers or all strings). Arrays are very common because they allow quick access to elements by using an index.

Key Points

  • Same Data Type: All elements are of one type (e.g., int, float, string).
  • Index-Based Access: Each element is accessed by an index, usually starting at 0.
  • Fixed Position in Memory: Elements are placed in consecutive memory locations, making access by index very fast.

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Table of Contents

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