Is node counting based on index wise (start from 0) or normal counting (start from 1)

is node counting based on index wise (start from 0)
or normal counting (start from 1)

suppose we have 3 node.
NODE NODE NODE
is it node 0 is it node 1 is it node 2
or node 1 or node 2 or node 3

hello @anujsharmabadboy

that is totally upto u .
whether u want to start from 1 or 0. ur implementation will change accordingly