How to separate words with the symbol ";"?

Question

bash

echo ${string[@]} | grep -E -o -z "\b[A-Za-z0-9._%+-][email protected][A-Za-z0-9.-]+\.[A-Za-z]{2,6}\b"

This line searches the text for email addresses and displays them.
Please tell me how to display the character ";" after each mail output (except the last one is a prerequisite)?

Answer 1

echo ${string[@]} | grep -E -o -z "\b[A-Za-z0-9._%+-][email protected][A-Za-z0-9.-]+\.[A-Za-z]{2,6}\b" | tr "\0" \; | sed -r 's/(.*)./\1\n/'