Write a regular expression to match the strings with the following requirements: Strings present an ...

---

Write a regular expression to match the strings with the following requirements: Strings present an email address The username only starts with a letter, and it can continue with any mix of alphanumeric characters or hyphen. Username is at least one character long and it can be of any length. The username is followed by the at sign symbol, i.e. @. The at sign is followed by one or more subdomains separated by dot symbols. A subdomain consists of alphanumeric characters. The address is terminated with the high-level domain name edu.