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Approach 2
Eslam Hossam
Oct 17, 2023
For approach 2, what is the difference between using set and using list since the if condition will check if the number is unique or not.
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Design Gurus2 years ago
The set allows us to check if the element exists in it in O(1), whereas, in the case of a list, we have to iterate the whole list to find if the element exists in it or not which is O(n).