Try this
System.out.println("originaltext".replaceAll(".{1}","$0ry"));
The above is using the String replaceAll(String regex, String replacement) method – “Replaces each substring of this string that matches the given regular expression with the given replacement.”
“.{1}” – The regular expression used to find exactly one occurrence({1}) of any character(.)
“$0ry” – The replacement string with “$0” for the matched value followed by the required characters(ry).
This is repeated for all matches!
3
solved Inserting letters into a string at every possible spot [closed]