Leetcode 217 - Contains Duplicate introduces the Hash-Set concept for the interview questions.
There are multiple variations of this question that we will cover in the future.
Problem Link: https://leetcode.com/problems/contains-duplicate/
Chapters:
0:00 - Read the Problem
1:21 - Brute Force Solution
3:40 - Sorting & two-pointers
6:44 - Hash-Set Solution
10:12 - Coding
11:11 - Recap
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