How to split a text into characters and get a text including every nth character ? (Maybe in Excel)

Question

Here's the problem: I have a text and I want it to be represented as separate texts that is made by characters mod n. For example text: "hfhshsseekbfe...", n=5, then first one "hsb..." (1st,6th,11th character from the original), second one "fsf..." (2nd,7th,12th character from the original) and so on. It will be simpler to write a program in cpp that reads and extracts needed information (modulo n characters) from a file and writes it down in a new.txt file. But I'm not a coder, I did some of coding for my Numerical Analysis course, but there wasn't any strings. So maybe Excel have some algorithms to do it?

Answer 1

In excel sheet, with ExcelO365 you can use Sequence() formula with MID() function like-

=TEXTJOIN("",TRUE,MID(A1,SEQUENCE(LEN(A1),,1,5),1))

For second one just make Start Number parameter of Sequence() formula to 2 like

=TEXTJOIN("",TRUE,MID(A1,SEQUENCE(LEN(A1),,2,5),1))