Doubling of the vector buckets

#1

I did not get the size 8 of the vector, the doubling of the vector

#2

@Kartikey-Saini-2865539636852100 Say at any moment the size of vector is 4. So when the vector becomes full it will double its size to 8. You may know the fact that vectors have variable size. When it becomes full it expands itself by doubling its size.

#3

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