divide a vector into two vectors of unequal length

How do I divide a vector into two vectors of unequal length so that the first vector contains 2/3 ,and the other contains1/3

Example

A=[1 2 3 4 5 6]

result

B=[ 1 2 3 4 ]

C=[6 7]

[Jan]

I assume you mean C = [5,6], because A does not contain a 7.

[reta jon]

That's right, thank you, sir

Answer 1

[Jan]

A = [1 2 3 4 5 6];
idx = ceil(numel(A) * 2 / 3);
B = A(1:idx)

B = 1×4

1 2 3 4

C = A(idx + 1:end)

C = 1×2

5 6