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- เผยแพร่เมื่อ 22 ก.ย. 2023
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In this video, I will be discussing Find duplicates in an array.
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Problem Statement -
Given an array a of size N which contains elements from 0 to N-1, you need to find all the elements occurring more than once in the given array. Return the answer in ascending order. If no such element is found, return list containing [-1].
Expected Time Complexity: O(N)
Expected Auxiliary Space: O(N)
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Tysm i did it own and will start from will do continue from today
Great ujjwal
But in the problem statement it is given that you extra space is only for the answer vector, do all the manipulations in the given array only. They are expecting O(1) space.
You can do some array manipulations to get this done. I completely missed that part and while explaination also, i didn't see that note. Apologies for that
Is it also done in O(1) space ???
No we are using Freq array which is o(n)