Creating a vector from a vector of values and a vector of indices to the first vector

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1

I have a vector x that contains “actual values” and a vector y that contains indices (which are less than or equal to the length of x). I want to create a new vector z whose ith element is x[y[i]]. I am looking for a one-liner to do this. I tried z = x.[y] but that’s not a thing.
The code below does implement this but I was hoping for a better method.

For purposes of this post, I am trying to distill the issue, but this would be with columns in a dataframe and x would be a multidimensional array representing a probability in each state (i.e. in each index combinination of x). y (and other variables) would be categorical variables giving the indices/states of interest.

x = [1, 2, 2, 5]
y = [1, 2, 3, 4]

z = zeros(length(y))
for entry in y
    z[entry] = x[entry]
end
z
# result:
 4-element Array{Float64,1}:
 1.0
 2.0
 2.0
 5.0
2 
julia> x[y]
4-element Array{Int64,1}:
 1
 2
 2
 5
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