How do I make a matrix with a repeating pattern but with different values

I have two variables xi and yi both with size nx1 and I want to create the following matrix:

M= [x1 0 y1; y1 0 x1; x2 0 y2; y2 0 x2; ... ;yn 0 xn].

I've tried using repmat but that just repeats the first row over and over.

Answer 1

[David Hill]

x=randi(100,5,1)

x = 5×1

61 44 71 31 36

y=randi(100,5,1)

y = 5×1

92 71 73 33 100

z=zeros(size(x));
M=[x';z';y';y';z';x']

M = 6×5

61 44 71 31 36 0 0 0 0 0 92 71 73 33 100 92 71 73 33 100 0 0 0 0 0 61 44 71 31 36

M=reshape(M(:),3,[])'

M = 10×3

61 0 92 92 0 61 44 0 71 71 0 44 71 0 73 73 0 71 31 0 33 33 0 31 36 0 100 100 0 36