---
title: "Discussion on \"#100DaysOfJava — Day 4: Array Practice Problems\" | Hashnode"
description: "Discussion on \"#100DaysOfJava — Day 4: Array Practice Problems\". After Day 3 introduced arrays, Big O, and my first two search algorithms, Day 4 was a pure practice day — no new theory, just solving classic array problems to actually build muscle memory. Here's eve"
url: "https://hashnode.com/posts/100daysofjava-day-4-array-practice-problems/6a85b24b00674bd5af40014d"
---

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# [#100DaysOfJava — Day 4: Array Practice Problems](https://daultani-gaurav-java.hashnode.dev/100daysofjava-day-4-array-practice-problems?utm_source=hashnode&utm_medium=feed)

After Day 3 introduced arrays, Big O, and my first two search algorithms, Day 4 was a pure practice day — no new theory, just solving classic array problems to actually build muscle memory. Here's eve

Aug 19 · 6 min read · daultani-gaurav-java.hashnode.dev  
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[Gaurav Daultani](https://hashnode.com/@daultanigaurav)

@daultanigaurav · india

  
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