---
title: "Discussion on \"287. Find the Duplicate Number\" | Hashnode"
description: "Discussion on \"287. Find the Duplicate Number\". The Pigeonhole principle"
url: "https://hashnode.com/posts/287-find-the-duplicate-number/6371e092b409cc3d17fda16d"
---

[Feed](https://hashnode.com/feed) /

Discussion

# [287\. Find the Duplicate Number](https://leetsolve.com/287-find-the-duplicate-number?utm_source=hashnode&utm_medium=feed)

The Pigeonhole principle

Nov 14, 2022 · 3 min read · leetsolve.com  
Updated Feb 24, 2023  
Read the article

-   [#cpp](https://hashnode.com/tag/cpp)
-   [#programming-blogs](https://hashnode.com/tag/programming-blogs)
-   [#programming-tips](https://hashnode.com/tag/programming-tips)
-   [#algorithms](https://hashnode.com/tag/algorithms)
-   [#codenewbies](https://hashnode.com/tag/codenewbies)

## Written by

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

@nhutnguyen · Copenhagen, Denmark

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

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

## Responses

Markdown supported · ⌘↵ to post

No responses yet.