Generate equal length strings from numbers by padding with "0"?

General Usage
2 
julia> x = [1, 14, 356];

julia> function pad_zeros(x)
           strs = string.(x)
           m = maximum(length, strs)
           lpad.(x, m, "0")
       end
pad_zeros (generic function with 1 method)

julia> pad_zeros(x)
3-element Array{String,1}:
 "001"
 "014"
 "356"
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