Write sections of a long string as new lines in a text document

I have a very long string value, approx. 13,000 characters long, that is made up of the letters X, Y and Z. So:

sub = 'XYZYXYZYZYZXYZYXYZ....'

and so on. Within the long string, there is also every so often a 0:

sub = '...X0Y...'

The 0 represents a break point. I need to write out this long sequence onto a single txt file, but at each instance where there is a '0', I need to remove that zero and start a new line on the text file.

How would I go about doing this?

Answer 1

[Stephen23]

sub = 'XYZYXYZYZYZXYZYXYZ0XYXYXYX';
tmp = split(sub,'0');
fprintf('%s\n',tmp{:})

XYZYXYZYZYZXYZYXYZ
XYXYXYX

[Stephen23]

Where of course you replace that FPRINTF line with:

fid = fopen('myfile.txt','wt');
fprintf(fid,'%s\n',tmp{:});
fclose(fid);

Answer 2

[Steven Lord]

sub = 'XYZYXYZYZYZXYZYXYZ0XYXYXYX';
sub2 = replace(sub, '0', newline)

sub2 = 
    'XYZYXYZYZYZXYZYXYZ
     XYXYXYX'