SubArray -selecting same combination of rows from 2 arrays

New to Julia
6

Of course it gives a different row index in general - you are sampling twice? If you want the same index for both arrays, just index them with the same vector?

julia> rows = sample(1:size(A, 1), 2; replace = false, ordered = true)
2-element Vector{Int64}:
 2
 4

julia> A[rows, :]
2×4 Matrix{Int64}:
 2  2  2  2
 4  4  4  4

julia> B[rows, :]
2×4 Matrix{Int64}:
 6  6  6  6
 8  8  8  8
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