How do i make this matrix simply

I am looking for an easy way to make this Nx2 matrix starting at [0 1]. Every other line the numbers are the inverse of the previous. See example below. I would like to be able to make this array in a simple way in one line without a loop. Either one of the matrix below would work.

x=[0 1;1 0;2 3 ;3 2;4 5;5 4]

OR

x=[0 1;0 1;2 3;2 3;4 5;4 5;]

Answer 1

[Stephen23]

>> N = 5;
>> X = reshape(repmat([0:2:N-1,1:2:N],2,1),[],2)
X =
   0   1
   0   1
   2   3
   2   3
   4   5
   4   5
>> X(2:2:end,[1,2]) = X(2:2:end,[2,1])
X =
   0   1
   1   0
   2   3
   3   2
   4   5
   5   4

[Matthew]

This is exactly what i was looking for. Thank you.