I have a string with 10 variables created using randi, between 0 and 1, in the last 5 variables (i.e 5-10 variables) i want maximum 2 places with 1 only (eg:- 1011101001).

I want in the last 5 variables, there to be maximum of two 1's only

Acceptable :- 1110110100, 1011100010, 0010101100 etc.

Not Acceptable :- 1101011001 etc.

nVar = 10;
a = randi([0, 1], 1, nVar);

[Jan]

What you call "variable" is called "element" in Matlab.

"(i.e. 5-10 variables)" - these are 6 elements, not 5.

[Nishant Ajnoti]

Okay, 6-10 elements

Answer 1

[Jan]

nVar = 10;
last = 5;

a = randi([0, 1], 1, nVar - last);
b = zeros(1, last);
n = randi([0, 2]);         % 0, 1 or 2
b(randperm(last, n)) = 1;  % Elements at n indices of 5 set o 1

result = [a, b]

result = 1×10

1 0 1 0 1 0 0 1 1 0