I want to make a loop that keeps replacing its own 'S's with SLSRSLS any N number of times

i want it like this, but in a loop

N = 3;
k = ('S');
k_1 = regexprep(k,{'S'},{'SLSRSLS'});
k_2 = regexprep(k_1,{'S'},{'SLSRSLS'});
k_3 = regexprep(k_2,{'S'},{'SLSRSLS'});
k_4 = regexprep(k_3,{'S'},{'SLSRSLS'});
disp(k_1)

I dont know if there is a easier way to do it, from what i have researched, changing variable names in a loop is not fun

Answer 1

[Simon Chan]

N = 3;
k{1} = {'S'};
for r = 1:N
    k{r+1} = strrep(k{r},{'S'},{'SLSRSLS'})
end

Results are k{1}, k{2}, k{3} & k{4}.

k{4} is

{'SLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLS'}

[Mads Albertsen]

it says for me "Unable to perform assignment because brace indexing

is not supported for variables of this type." for line 2

[Mads Albertsen]

i just need for k{1} to just be k, works like a charm, thanks

[Stephen23]

@Mads Albertsen: you get that error message because variable k already exists in the workspace and Simon Chan's code is not robustly written to handle that. Try this instead:

N = 5;
k = {'S'};
for ii = 2:N
    k{ii} = regexprep(k{ii-1},'S','SLSRSLS');
end
celldisp(k)

k{1} =
S
k{2} =
SLSRSLS
k{3} =
SLSRSLSLSLSRSLSRSLSRSLSLSLSRSLS
k{4} =
SLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLS
k{5} =
SLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLSLSLSRSLSLSLSRSLSRSLSRSLSLSLSRSLS

If you do not need to store all of those strings (i.e. you only need the last one) then get rid of the cell array entirely.

[Mads Albertsen]

only needed the last one, so makig k {1} to just k did the trick. but i am curius, if i want to do it with multiple strings and charachters at the same time without them overlapping can it be done in strrep?