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Simultaneous Changing of Values in For Loop.

Asked by Yavar Hayat on 22 Apr 2019
Latest activity Edited by Yavar Hayat on 22 Apr 2019
Can I change two values at once in a for loop or any other way in MATLAB?
As an example:
t=0;
for (i=1:1:3)&(j=2:1:4)
k=i*j;
t=t+k;
end
I know this code is wrong but is there a way to simlateously increament i and j values!
i=1 and j=2
k=2
t=2
then
i=2 and j=3
hence
k=6
and t=2+6=8
like that???

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1 Answer

Answer by Stephen Cobeldick on 22 Apr 2019
Edited by Stephen Cobeldick on 22 Apr 2019
 Accepted Answer

Usually it is much easier to increment over indices, not data:
t0 = 0;
t = t0;
Iv = 1:1:3;
Jv = 2:1:4;
for x = 1:numel(Iv)
k = Iv(x)*Jv(x);
t = t+k;
end
In your case the loop is entirely superfluous anyway:
t = t0 + cumsum(Iv.*Jv)

  1 Comment

The system I had to solve was much more complex than this. Though this is the solution to the example but cuoldn't be applied directly to my system. Nonetheless, it did definitely help me and did solve my system.
Thank you.

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