Creating arrays that depend on each other

Hello everyone,

I have a question, I want to create two arrays that depend on each other. Loss and H are already predefind, I want to create in and out, the first value of out depends on in and the second value of in depends on the first value of in.

Should this be created in if statments or just in different steps like:

in(1,1) = 20;
out(1,1) = in(1) - loss(1);
in(2,1)  = out(1) - loss(2);
etc. 

I feel like there is a better way to do this, but I'm now sure what.

Any help would be appreciated.

Thank you!

This is the original arrays and how they depend on each other

in = [20; out(1) - loss(2);out(2) - loss(3); out(3) - loss(4); out(4) - Ploss(5); out(5) - loss(6); out(6) - loss(7)]

out = [in(1) - loss(1); in(2)+ H(2); in(3)+ H(3); in(4)+ H (4); in(5)+ H(5); in(6)+ H(5)]