Comparing and Ranking Children?
Hello, I am trying to make a function that compares every child to every other child in the most efficient way possible and rank them. (1st,2nd,3rd...)
I would have considered table.sort(Table,pos,comp) but I heard that it is not always reliable from lua.org
Please help, I have been looking everywhere for a way to compare a given set of points and rank them in a specific order.
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1 answer
table.sort(list, lessThan) sorts list in increasing order by consulting lessThan(a, b) to compute whether or not a < b.
Thus if you want to, for example, compare Vector3s by their Y-value, ascending, you could use this as your lessThan function:
function vectorYCompare(a, b)
return a.y < b.y
end
If you wanted the sort to be descending, you'd have to flip the < into a >:
function vectorYCompareDescending(a, b)
return a.y > b.y
end
If you actually had a list of Parts but you wanted to compare their locations,
function descendingParts(a, b)
return a.Position.y > b.Position.y
end
table.sort isn't stable. That means if you have "equal" elements (in this case, parts with the same Y), their order after doing the sort is undefined.
Unless you got the parts in some particular order (:GetChildren() won't give you in any particular order), this doesn't matter.