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How to return 5 topmost values from vector in R?

I have a vector and I'm able to return highest and lowest value, but how to return 5 topmost values? Is there a simple one-line solution for this?

question from:https://stackoverflow.com/questions/3692563/how-to-return-5-topmost-values-from-vector-in-r

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> a <- c(1:100)
> tail(sort(a),5)
[1]  96  97  98  99 100

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