---
title: "Discussion on \"How to Perform a Counting Using Array and Hash Table\" | Hashnode"
description: "Discussion on \"How to Perform a Counting Using Array and Hash Table\". Finding the first non-repeating character in a string"
url: "https://hashnode.com/posts/387-first-unique-character-in-a-string/63158958041b51e1712e69c7"
---

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# [How to Perform a Counting Using Array and Hash Table](https://leetsolve.com/387-first-unique-character-in-a-string?utm_source=hashnode&utm_medium=feed)

Finding the first non-repeating character in a string

Nov 28, 2023 · 3 min read · leetsolve.com  
Updated Jan 28, 2024  
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## Written by

[Nhut Nguyen](https://hashnode.com/@nhutnguyen)

@nhutnguyen · Copenhagen, Denmark

  
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Software developer and Writer

Hi! My name is Nhut Nguyen. I am a software engineer and a writer in Copenhagen, Denmark. Learn more about me at nhutnguyen.com

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