How to stop finding a value once it has been attained? (Find function inside a loop)

Hello, I am finding a first nonzero value from the array within the while loop. However, the efficiency of my code got significantly lower as I tried to find a value from the entire array every time the code loops. Is there a way to stop finding a value once it has been found? Below is the excerpt of my code that is within the while loop.

ind_e = find(current_e(2,:),1,'first');

if exist('ind_e','var')
    if k > ind_e
        sur_current_e(1,k) = current_e(1,k-ind_e) - current_e(2,k);
    end
end

Thank you very much.

Answer 1

[Brendan Collins]

SungJun,

You could try something like this. Set I to 0 outside of the loop somewhere than give it a shot.

ind_e = find(current_e(2,:),1,'first');

if I == 0
    if exist('ind_e','var')
        if k > ind_e
            sur_current_e(1,k) = current_e(1,k-ind_e) - current_e(2,k);
            I = 1;
        end
    end
end

This will check the variable I before running back through the loop for the rest of your while loop's iterations, but because you already found the number you want, I has been changed from 0 to 1, and the nested if will not run.

[SungJun Cho]

Thank you Brendan! Actually what I wanted was to somehow 'stop'

ind_e = find(current_e(2,:),1,'first');

this find command once I found the ind_e value. But thanks for your help.

Answer 2

[Andrei Bobrov]

Please read about break in while loop.

[SungJun Cho]

Thank you! I will check out the document.