How do I add variables into a string within a table?

I have a table with a column of 10 digit strings that I need to add "-" into.

How do I turn a column of strings looking like this "0001336363" into a column of strings looking like this "0001336-36-3"?

Answer 1

[Star Strider]

The only option appears to be to turn the string variable into a char array first:

str = "0001336363";
strc = char(str);
Out = sprintf("%7s-%2s-%s", strc(1:7),strc(8:9),strc(10))

producing:

Out = 
    "0001336-36-3"

.

[Nick O'Connor]

Thank you. I was trying to come up with something along that line but hadn't thought to change it to a character array.

After asking here, I found this alternative solution.

tests.CAS12 = insertAfter(tests.CAS12,7,"-"); % Add in the first "-"

tests.CAS12 = insertAfter(tests.CAS12,10,"-") % Add in the second "-".

I shall compare the two and decide which I think is cleaner.

[Star Strider]

As always, my pleasure!

I searched through the string functions, although I didn’t consider that insertAfter would apply. It would likely come down to which is the more efficient use of computer resources.