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What You'll Learn: Problem Overview: Understand what the I have created a detailed solution to the problem explaining 3 different approaches to the solution and performing the time ... Easy explanation with brute force method, optimised algorithm, live code and time complexity. Try it yourself: Do you need more help with coding? ════════════════════════════ ✓ Apply for 1-1 coaching ... 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.

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Contains Duplicate - LeetCode 217 - JavaScript

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217. Contains Duplicate LeetCode Javascript Solution

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Contains Duplicate - Leetcode 217 - Python

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217. Contains Duplicate | JavaScript | Set | O(n) Time Complexity | LeetCode Data Structures

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Last Updated: June 8, 2026

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