how to terminate loop when i get desired result

i am sloving a matrix, which is in time loop (for). I want this time loop stop and present final output once the output matrix starts repeating itself.

Answer 1

[KSSV]

t0 = randperm(100,1) ;   % give some value 
tol = 10^-3 ;            % mention the accuracy you want 
for i = 1:10000
    % find your output here 
    t1 = randperm(100,1) ;    % random value for demo  
    if abs(t0-t1) < tol 
        break 
    else
        t0 = t1 ; 
    end
end
[t0 t1 i]

ans = 1×3

28 28 75