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What You'll Learn: Problem Overview: Understand what the Easy explanation with brute force method, optimised algorithm, live code and time complexity. Try it yourself: I have created a detailed solution to the problem explaining 3 different approaches to the solution and performing the time ... 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
217. Contains Duplicate LeetCode Javascript Solution
Contains Duplicate - Leetcode 217 - Python
217. Contains Duplicate | JavaScript | Set | O(n) Time Complexity | LeetCode Data Structures
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Last Updated: June 3, 2026
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