Question

How would I generate a vector like

x1,x2,x3,x4,...,xn 

the problem is concatenate ‘,’and a ‘x’ char

n=100
A = (1:n);

Answer 1

To generate the string 'x1,x2' etc, you can create a mask for SPRINTF using REPMAT like so:

n = 5;

mask = repmat('x%i,',1,n);

out = sprintf(mask,1:n);

out = out(1:end-1)

out =
x1,x2,x3,x4,x5

Note that in case you actually want to create a vector containing the strings 'x1','x2' etc, you’d use ARRAYFUN to generate a cell array:

out = arrayfun(@(x)sprintf('x%i',x),1:n,'uniformOutput',false)
out = 
    'x1'    'x2'    'x3'    'x4'    'x5'