Leetcode 217. Contains Duplicate

Leetcode 217. Contains Duplicate
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I am Mohammad Fraz , a final year Engineer at DTU and I create content for Coding and technical interviews for FAANG. I explain the intuition to solve Data Structure and Algorithm Questions from leetcode and other platforms. I also cover interview experiences for FAANG and other tech giants. You will also find lectures on the frequently asked interview questions.

[anandkumarnitrourkela]

great contribution bhaiya ..loved the solution

[ankitgaur]

very very good and simple explanation. pls provide source code also.

[kunalgupta]

why is sorting soloution 2nd one (nlogn) faster than unordered set 3rd one with O(n) complexity

[hrithikkumar]

what was the problem with doing it with 2 pointer??

[dilipsuthar]

In second approach which sorting algorithms apply
If merge sort then O(n) space
How O(1)