main.py123456789101112131415def solution (input):valid_emails. =for i in input:set()i = i.lowercase()name, domain i.split('@')currVal = name.split('+')[0].replace('.valid_emails.add(currVal + '@' + domain)return len(valid_emails)A user is trying to make a new Twitch account with their email. But Twitch has a problem with"bots": users that make spam accounts on Twitch under fake emails. In this problem, given a userwho tries to make an account with a certain number of emails, we want to determine how many ofthem are unique.Valid emails consist of a username and a domain. They are separated by the '@' sign. The emailsabide by certain rules:• Emails are case insensitive. This means that ninja@twitch.tv is the same email asNinja@twitch.tv and ninja@Twitch.tv.• In addition to letters and numbers, the email may contain one or more '.' or '+'.• If you add periods '.' between some characters in the username, this is equivalent to the sameaddress without dots in the username. Note that this rule does not apply to domain names.Example: ninja@twitch.tv is the same email as nin.ja@twitch.tv, but ninja@twitch.tv is not thesame as ninja@twi.tch.tv.If you add a plus '+' in the username, every character following it in the username will beignored. Note that this rule again does not apply to domain names. Example:ninja+1@twitch.tv is the same email as ninja+2@twitch.tv, but ninja@twitch.tv is not the sameas ninja@tw+tch.tv.• All of these rules can be used at the same time.Given an array of strings possible_emails, how many unique emails does it contain? You canassume that all strings you will receive will be a valid email, as defined above. Failed:Args: [["\"alexleet@code.com\"", \"alex@leetcode.com\"", \"a.lex.leet@code.com\"." \"alex+leet@leetcode.com\""]]Result: 3Expected result: 211:11Failed:Args: [["\"ninja@gmail.com\1.com\"ail.com\""1111111\"nin.ja@gmail.com\"1Result: 3Expected result: 111:1111NLION@lion.com\""]]Result: 6Expected result: 411\"ninja.+streamer@gmail.com\""]]11\"n.inja@gmail.com\'\"ninj.A@gmail.com\'111111 11Passed:Args: [["\"test.email+Alex@twitch.tv\"", "\"test.e.mail+Bob.Carol@twitch.tv\"", "\"testemail+David@twitch.tv\""]]Result: 1Failed:Args: [["\"ninja@twitch.tv\"", \"NiNjA@TwiTch. Tv\"", \"nINJA@tWITCH.TV\"", \"N1NJA@TWITCH.TV\"", \"NORTHERNLION@lion.com\"", \"NORTHERSummary: 2 tests passed, 3 tests failed.1111J1111\"ni.nja@gmai\"ninja.@gm11Passed:Args: [["\"a@twitch.tv\"", \"b@twitch.tv\"", \"c@twitch.tv\""]]Result: 311

This is very simple. Here I have attached the correct code that satisfies all the requirements as…

Answered: Given an array of strings…

Given an array of strings possible_emails, how many unique emails does it contain? You can assume that all strings you will receive will be a valid email, as defined above.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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