Index exceeds matrix dimensions. Error in RandomSelection (line 9) xx=r(1:numOfBits);

function [xx]=RandomSelection(numOfBits,max)

% This function generates unrepeated random numbers ranges from 1 to max

% x1=0;

xx= zeros(1, numOfBits);

r = randperm(max);

xx=r(1:numOfBits);

%

end

%

Answer 1

[Esen Ozbay]

You will get this error if numOfBits is greater than max.

For example, if max = 5 and numOfBits = 7, then r will be a 1x5 vector and you will try to access the seventh element of a 5-element array.

By the way, the line

xx= zeros(1, numOfBits);

is not necessary since you are redefining xx below.