(10 points) Write code that that lets you know if a string is an email address or not. Based on the definition from problem 1. An email address identifies an email box to which messages are delivered. Every email address consists of 3 elements: local-part, @ symbol (pronounced as "at"), and domain name. The local-part is placed before the @ symbol, and the domain name is placed after the @symbol. For example, in the email johndoe@company.com, "johndoe" is the local-part, and "company.com" is the domain. Emails are invalid without these elements. The local-part or username contains: a. uppercase and lowercase Latin letters (A-Z, a-z); b. numeric values (from 0 to 9 ); c. special characters, such as \# !\% \$'\& +I=?_{} i. The period character (.) is valid for the local-part unless it is placed at the beginning or end of an email address. There also can't be two or more periods in a row A domain name consists of one or more parts separated by a dot and can contain: a. uppercase and lowercase Latin letters (A-Z, a-z); b. numeric values (from 0 to 9 ); c. a hyphen (-), on condition that it is not placed at the beginning or end of the domain 1. (9 points) Create a regular expression, DFA, and Regular Grammar for the local-part of the email address