---
title: "Discussion on \"Array - The Building Block of Data Structures\" | Hashnode"
description: "Discussion on \"Array - The Building Block of Data Structures\". Learn what arrays are, how they work in memory, and why they matter for coding interviews. Includes Java examples and must-practice LeetCode problems."
url: "https://hashnode.com/posts/array-the-building-block-of-data-structures/681e814ad666458ae351c8f7"
---

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# [Array - The Building Block of Data Structures](https://ns717.hashnode.dev/array-the-building-block-of-data-structures?utm_source=hashnode&utm_medium=feed)

Learn what arrays are, how they work in memory, and why they matter for coding interviews. Includes Java examples and must-practice LeetCode problems.

May 9, 2025 · 5 min read · ns717.hashnode.dev  
Updated Dec 18, 2025  
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-   [#coding-interviews](https://hashnode.com/tag/coding-interviews)
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-   [#leetcode](https://hashnode.com/tag/leetcode)
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## Written by

[Nitin Singh](https://hashnode.com/@ns717)

@ns717 · India

  
[View profile](https://hashnode.com/@ns717)

"Software Engineer | Problem Solver | Blogger | Passionate About Software Engineering | Writing on Java, Backend Systems & Clean Code"

I'm a passionate Software Engineer with over 12 years of experience working with leading MNCs and big tech companies. I specialize in Java, microservices, system design, data structures, problem solving, and distributed systems. Through this blog, I share my learnings, real-world engineering challenges, and insights into building scalable, maintainable backend systems. Whether it’s Java internals, cloud-native architecture, or system design patterns, my goal is to help engineers grow through practical, experience-backed content.

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