setting a threshold for consecutive number

Hello everybody, I have a problem with this following issue:

I want to select X=1 or 2 randomly but if in this code if X=2

happens 3 times consecutively ,for the next time, program should select X=1 and vice versa.

(I mean 1 or 2 should be selected randomly but with a threshold==3 after that it should choice another value)

my code is here:

Please if you know it tell me about that, I really stuck (Thanks in advance)

Z{1,1}={0};
for h=1: 45
    Y = {'L', 'R'};
    %% Here is my problem (Setting a threshold)
    X = randi([1, 2], 1); % Get a 1 or 2 randomly.but I want to set a threshold that if X=2 happens 3 times consecutively for the next time choice another value and vice versa. (I mean (for example) it should not select X=2, 4 times consecutively in this loop randomly )
    Z{1,h} = Y(X);  
end

Answer 1

[Image Analyst]

Make X an array, and if X(h), X(h-1) and X(h-2) are all the same, get a new X. Like this:

numTrials = 45;
maxRunLength = 3;
Z{1}={0};
Y = {'L', 'R'};
for h = 1 : numTrials
	% Here is my problem (Setting a threshold)
	X(h) = randi([1, 2], 1); % Get a 1 or 2 randomly.but I want to set a threshold that if X=2 happens 3 times consecutively for the next time choice another value and vice versa. (I mean (for example) it should not select X=2, 4 times consecutively in this loop randomly )
	if h >= maxRunLength
		theRange = range(X(h-maxRunLength+1 : h))
		if theRange == 0
			% They're all the same.  Swap the current X so 1 is now 2 or 2 is now 1
			X(h) = 3 - X(h);
		end
	end
	Z(h) = Y(X(h)); % Use parentheses, not braces.
end
% Show values in command window
X
Z

You'll see

X =

Columns 1 through 22

1 2 1 1 2 1 2 1 2 1 2 1 1 2 2 1 2 2 1 1 2 1

Columns 23 through 44

1 2 1 1 2 1 1 2 2 1 1 2 1 2 1 1 2 2 1 2 1 1

Column 45

2

Z =

1×45 cell array

Columns 1 through 15

{'L'} {'R'} {'L'} {'L'} {'R'} {'L'} {'R'} {'L'} {'R'} {'L'} {'R'} {'L'} {'L'} {'R'} {'R'}

Columns 16 through 30

{'L'} {'R'} {'R'} {'L'} {'L'} {'R'} {'L'} {'L'} {'R'} {'L'} {'L'} {'R'} {'L'} {'L'} {'R'}

Columns 31 through 45

{'R'} {'L'} {'L'} {'R'} {'L'} {'R'} {'L'} {'L'} {'R'} {'R'} {'L'} {'R'} {'L'} {'L'} {'R'}

[mohadeseh zamani]

you're right. Thanks a zillion,you really helped me.