creating loop for subtracting values from matrix which size is variable.

for example

a=[y1,x1,y2,x2,....yn+1,xn+1]

I wanna subtract all y values as y_column=[y1;y2;y3;y4;.....;yn+1] and

I wanna subtract all x values as x_column=[x1;x2;x3;x4;......;xn+1]

what kind of loop I have to write for these subtracting?

Answer 1

[Azzi Abdelmalek]

out1=a(1:2:end)
out2=a(2:2:end)