Apply flat list of indices to nested list

[crapai]

Is there a way to apply a flat list of indices to a nested list?

If I have:
[0,1,2,5,12,18,22]

Any my nested list is:
[[a,b,c],[b,c,**d**],[a,b,c],[a,b,c,e],[a,b,c],[c,d,f],[c,d,e,g]]

I’m using Lists.DuplicateItemIndicies to get unique and duplicate indices but I couldn’t get it to work on my list of 666 items without flattening it first. Is there a way to apply the output of that node to the original nested list?

[AmolShah]

Not sure what you exactly need in the end but hope this points you in the right direction.

Solution.dyn (26.5 KB)