[R] inverse function of order()

[Uwe Ligges]

Wolfram Fischer wrote:

> I have:
> 
>  d <- sample(10:100, 9)
>  o <- order(d)
>  r <- d[o]
> How I can get d (in the original order), knowing only r and o?

r[order(o)]

Uwe Ligges


> Thanks - Wolfram
> 
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