Is there a built-in function that finds the percentile of a number in a vector?

(Deleted because I misunderstood the question)

I think you want something like the `percentile`

function in StatsBase.jl? (Most of the statistics functions in Julia are in packages.)

Or do you want something like `percent(x, v) = 100 * count(<(x), v) / length(v)`

, i.e. the percent of elements of `v`

that are `< x`

?

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