---
title: "Discussion on \"217. Contains Duplicate\" | Hashnode"
description: "Discussion on \"217. Contains Duplicate\". Link bài toán trên Leetcode: https://leetcode.com/problems/contains-duplicate/description/\n[EASY] Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct.\n\nExample 1:\nIn..."
url: "https://hashnode.com/posts/217-contains-duplicate/689b411020a8f26e414ab91b"
---

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# [217\. Contains Duplicate](https://dwnngnn.hashnode.dev/217-contains-duplicate?utm_source=hashnode&utm_medium=feed)

Link bài toán trên Leetcode: https://leetcode.com/problems/contains-duplicate/description/ \[EASY\] Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct. Example 1: In...

Aug 12, 2025 · 2 min read · dwnngnn.hashnode.dev  
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