How to keep TRUE if followed by FALSE but if TRUE is followed by TRUE, change the second TRUE to false?

I have an array of logic 1 and 0's.

If 1 is immediately followed by another 1, I want to change this second 1 to a 0.

trial_index = zeros(size(trial)+1); 

for i = 1: length(trial)
    if trial(i) == 1 
        strial_index(i) = 1;
    else
        trial_index(i) = 0;
    end
    
    if trial(i+1) == 1
        trial_index(i+1) = 0;
    end
    
end

Answer 1

[KSSV]

a = round(rand(100,1)) ; 
b = a ;

for i = 2:length(a)
    if a(i-1)==1 && a(i)==1
        b(i) = 0 ;
    end
end

[Mirthand]

Thank you! this worked!