LeetCode 217 | Contains Duplicate | Python Set vs Sorting Methods | AlgoYogi

Welcome to AlgoYogi! 🚀 Start Your Smart Coding Prep at 👉 https://algoyogi.io In this video, we solve **LeetCode 217: Contains Duplicate** using Python. Problem: given an integer array nums, return true if any value appears more than once in the array; otherwise return false. We cover two methods: - Use a set to track seen numbers and check duplicates in one pass - Sort the array and check consecutive elements for equality 👉 Problem Link: https://leetcode.com/problems/contains-duplicate/ --- ### ⏱ Timestamps 0:00 Introduction 0:20 Problem Statement 0:30 Set-Based One-Pass Method 5:00 Python Code Walkthrough 6:30 Time & Space Complexity --- ### Why Watch? - Learn fast detection of duplicates with O(n) time using a hash set - Compare with sorting method: O(n log n) time, but simple logic - Understand trade-offs: memory vs performance #LeetCode #ContainsDuplicate #Python #HashSet #Sorting #AlgoYogi