How can I fix this iteration script

Hi, I'm trying to solve problem.

I have to set max 2 iteration and to be honest I am not skilled in this kind of script. If someone will help me u will give me good christmas present thank you.

it = 0; % Počet iterácií
while max(abs(U-UU))>eps  
    UU = U; %Saving previously iteration
    
    for m = 1:length(U) %Solve of new iteration
        if metoda == 1
            U(m,1) = a(m,m)\(-b(m,:)*UU+c(m,:));
        else
            U(m,1) = a(m,m)\(-b(m,:)*U+c(m,:));
        end
    end
    it = it+1;
end
[U.'*1e-3 it]

[Marek Endrizal]

Mb I found solution

it = 0; % Počet iterácií
while max(abs(U-UU))>eps 
    UU = U; 
    
    for m = 1:length(1) %
        if metoda == 1
            U(m,1) = a(m,m)\(-b(m,:)*UU+c(m,:));
        else
            U(m,1) = a(m,m)\(-b(m,:)*U+c(m,:));
        end
    end
    it = it+1;
end
[U.'*1e-3 it]

???

[KSSV]

You have to use for to have fixed number of iterations. If you want to run loop twice:

for i = 1:2
    i
    % do what you want 
end

[Marek Endrizal]

u mean replacing m by i ? cause I think it's the same as my latest script.

[KALYAN ACHARJYA]

it = 0; % Počet iterácií
while max(abs(U-UU))>eps 
    UU = U; 
    for m = 1:length(1) %
        if metoda == 1
            U(m,1) = a(m,m)\(-b(m,:)*UU+c(m,:));
        else
            U(m,1) = a(m,m)\(-b(m,:)*U+c(m,:));
        end
    end
    it = it+1;
    if it>2
        break;
    end
    end
end
[U.'*1e-3 it]

[Marek Endrizal]

Thank you so much <3

Answer 1

[Hiro Yoshino]

All you need is add one more restriction on the top of the "while" loop.

it = 0; % Počet iterácií
while max(abs(U-UU))>eps  || it <= 1
    UU = U; %Saving previously iteration
    
    for m = 1:length(U) %Solve of new iteration
        if metoda == 1
            U(m,1) = a(m,m)\(-b(m,:)*UU+c(m,:));
        else
            U(m,1) = a(m,m)\(-b(m,:)*U+c(m,:));
        end
    end
    it = it+1;
end
[U.'*1e-3 it]

[KALYAN ACHARJYA]

while max(abs(U-UU))>eps  && it <= 1

[Hiro Yoshino]

@KALYAN Yes, you're right! Haha