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

See similar textbooks

Related questions

Q: X1240: HashTable for Student ID The student ID at a fictitious university encodes various pieces of…

A: method addStidentId(String[] ids)// takes a string of student ids create an empty hasmap<String,…

Q: 30 31 32 33 34 35 36 def kwargs_to_args_decorator(*args, **kwargs): def decorator (func): def…

A: Function in python:- A collection of statements called Python Functions returns the particular…

Q: An array may contain multiple duplicate values, as shown below. In order to design an algorithm with…

A: According to the information given:- We have to choose the correct option to satisfy the statement.

Q: Three strings are read from input and stored into list musicians. Then, three more strings are read…

A: The objective of the question is to format and print strings in Python. The strings are stored in…

Q: Use cin to read each pair of inputs, integer currFee and string currState, until -1 is read from…

A: Define a class called License with two private member variables: fee and state integer and string…

Q: Make an array called array with three elements in it, a hashmap /dict / associative array called…

A: Algorithm: Start the program. Create a indexed array and a associate array. Create a string. Display…

Q: Developer Daniel is designing an application that parses a text file, and derives certain statistics…

A: Map:- A Map is a data structure that stores data in key-value pairs. It is an associative array that…

Q: e correct else dialike correct -----------Please.List[3], ..., myList[12]; The statement in Line 3…

A: THE ALGORITHM OF THE CODE:- 1. Create a class called myArray.2. Include two constructors that take…

Q: Write a program that will take this dictionary: gradePoints = {"A":4,"B":3,"C":2,"D":1,"F":0} and…

A: The average of the academic is determined by dividing the total amount of quality points earned for…

Q: Assignment: Linked List of Students You have been tasked with implementing a program in Java that…

A: Java program: public class Student { private String name; private int grade; public…

Q: to create a SortedList object with three names and IP addresses, show the code.

A: The use of SortedList in C#: One array is used to hold the list's keys, while the other is used to…

Q: A large parking-systems company would like to automate your assignment procedure for self- parking…

A: C) C++ CODE #include<bits/stdc++.h>using namespace std;int main(){Â int n;Â…

Q: ✪ Error UnboundLocalError local variable 'args' referenced before assignment

A: To tell Python that we want to use the global variable inside the function, we need to use the…

Q: Possible words in Hangmandef possible_words(words, pattern):Given a list of possible words, and a…

A: Source code: def possible_words_generator(seed):f = open('words_sorted.txt', 'r',…

Q: You are writing a program that repeatedly does a linear search on a list of items. In order to speed…

A: The solution is given in the below step

Q: Question 1.2 What is the time complexity of the following three algorithms? Express your answer in…

A: Task :- Identify the time complexity for given codes.

Q: Which of the following has its elements always sorted based on some criteria? O PriorityQueue O…

A: PriorityQueue has its elements always sorted based on some criteria.

Q: Multiple key-value pairs, each representing a hotel room number and the guest's name, are read from…

A: The objective of the question is to sort the values (guest names) in the dictionary 'room_data' and…

Q: Vectors are synchronized while ArrayLists are not. Group of answer choices True False

A: Vectors: A vector is a data structure that represents a sequence of elements. Vectors are typically…

Q: Use the arrays provided below which represent temperatures gathered by 3 thermocouples Parts b & c;…

A: NOTE: Since programming language is not mentioned. Therefore answering the question in Python…

Q: Strings all_colors and updated_value are read from input. Perform the following tasks: Split…

A: The objective of the question is to manipulate a string of colors separated by commas. The string…

Q: Select all answers that apply. In which of the following scenarios is using a vector less efficient…

A: Answer: A program that needs to add a large number of elements to the beginning of the container A…

Concept explainers

Array

The simplest way to start thinking about an array is as a collection, or a set of elements. In programming, these elements may be constants, variables, functions and pointers.

Question

main.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
def 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 user
who tries to make an account with a certain number of emails, we want to determine how many of
them are unique.
Valid emails consist of a username and a domain. They are separated by the '@' sign. The emails
abide by certain rules:
• Emails are case insensitive. This means that ninja@twitch.tv is the same email as
Ninja@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 same
address 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 the
same as ninja@twi.tch.tv.
If you add a plus '+' in the username, every character following it in the username will be
ignored. 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 same
as 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 can
assume that all strings you will receive will be a valid email, as defined above.

Failed:
Args: [["\"alexleet@code.com\"", \"alex@leetcode.com\"", \"a.lex.le
et@code.com\"." \"alex+leet@leetcode.com\""]]
Result: 3
Expected result: 2
11:11
Failed:
Args: [["\"ninja@gmail.com\
1.com\"
ail.com\""
1
11
11
11
\"nin.ja@gmail.com\"
1
Result: 3
Expected result: 1
11:11
11
NLION@lion.com\""]]
Result: 6
Expected result: 4
11
\"ninja.+streamer@gmail.com\""]]
11
\"n.inja@gmail.com\'
\"ninj.A@gmail.com\'
11
11
11 11
Passed:
Args: [["\"test.email+Alex@twitch.tv\"", "\"test.e.mail+Bob.Carol@twitc
h.tv\"", "\"testemail+David@twitch.tv\""]]
Result: 1
Failed:
Args: [["\"ninja@twitch.tv\"", \"NiNjA@TwiTch. Tv\"", \"nINJA@tWITCH
.TV\"", \"N1NJA@TWITCH.TV\"", \"NORTHERNLION@lion.com\"", \"NORTHER
Summary: 2 tests passed, 3 tests failed.
11
11
J
11
11
\"ni.nja@gmai
\"ninja.@gm
11
Passed:
Args: [["\"a@twitch.tv\"", \"b@twitch.tv\"", \"c@twitch.tv\""]]
Result: 3
11

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Suppose you have a dictionary of survey responses: keys are student names values are favourite ice cream flavours (e.g. "chocolate", "vanilla", "strawberry", etc.) Write a function that takes a dictionary of survey responses and returns a new dictionary where: keys are ice cream flavours and values are number of students with that favourite flavour. For example: Test survey = {"Howlett": "vanilla", "Grey": "chocolate", "Munroe": "vanilla", "Summers": "strawberry", "Xavier": "strawberry", "Drake": "strawberry"} print (survey_results (survey)) Result {'vanilla': 2, 'chocolate': 1, 'strawberry': 3}
A map is a container that stores a collection of ordered pairs, each pair consists of a key and a value, <key, value>. Keys must be unique. Values need not be unique, so several keys can map to the same values. The pairs in the map are sorted based on keys. Group of answer choices True False
Python question please include all steps and screenshot of code. Also please provide a docstring, and comments throughout the code, and test the given examples below. Thanks. Suppose that you are given a list of strings representing a deck of 52 cards. Write afunction called bridgeHands() which takes the list as its only parameter. It shuffles the listand divides it into 4 hands (tuples) of 13 cards each. It returns a dictionary in which thekeys are the strings 'North', 'South', 'East', and 'West', with each key corresponding to adifferent one of the hands.
def upgrade_stations(threshold: int, num_bikes: int, stations: List["Station"]) -> int: """Modify each station in stations that has a capacity that is less than threshold by adding num_bikes to the capacity and bikes available counts. Modify each station at most once. Return the total number of bikes that were added to the bike share network. Precondition: num_bikes >= 0
P__Given an empty ArrayList<Integer> numList, what are numList's contents after the following operations: numList.add(12);numList.add(14);numList.add(16);numList.set(1, 13);numList.add(0, 10);.
We need a linked list to hold information about penguins in a zoo. You will need the following integers for your IntNode (see below). I have included sample values for one of the penguins: penguin ID: 45821 penguin weight (kg): 11 penguin height (cm): 90 We now need to track the number of penguins in the zoo. I would like to propose a better way to track the size of the list. Rather than traversing the list every time you need to know its size, why not keep a variable called listSize that increments every time you add a node to the list and decrements anytime you remove an item from the list? public class penguinList { //nested class IntNode goes here private IntNode first; private int listSize; //...the methods of penguinList class go here } Now, you just need to increment the listSize instance variable in every method that adds a node to the list. If you have any methods that removes a node from the list, decrement the listSize instance variable in those methods instead.…
We need a linked list to hold information about penguins in a zoo. You will need the following integers for your IntNode (see below). I have included sample values for one of the penguins: penguin ID: 45821 penguin weight (kg): 11 penguin height (cm): 90 We now need to track the number of penguins in the zoo. I would like to propose a better way to track the size of the list. Rather than traversing the list every time you need to know its size, why not keep a variable called listSize that increments every time you add a node to the list and decrements anytime you remove an item from the list? public class penguinList { //nested class IntNode goes here private IntNode first; private int listSize; //...the methods of penguinList class go here } Now, you just need to increment the listSize instance variable in every method that adds a node to the list. If you have any methods that removes a node from the list, decrement the listSize instance variable in those methods instead.…
FIX THIS CODE Using python Application CODE: import csv playersList = [] with open('Players.csv') as f: rows = csv.DictReader(f) for r in rows: playersList.append(r) teamsList = [] with open('Teams.csv') as f: rows = csv.DictReader(f) for r in rows: teamsList.append(r) plays=len(playersList) for i in range(plays): if playersList[i]['team']=='Argentina' and int(playerlist[i]['minutes played'])<200 and int(playersList[i] ['shots'])>20: print(playersList[i]['last name']) c0=0 c1=0 c2=0 for i in range(len(teamsList)): if int(teamsList[i]['redCards'])==0: c0=c0+1 if int(teamsList[i]['redCards'])==1: c1=c1+1 if int(teamsList[i]['redCards'])==2: c2=c2+1 print("Number of teams with zero redcards:",c0) print("Number of teams with zero redcards:",c1) print("Number of teams with zero redcards:",c2) ratio=0 for i in range(len(teamsList)): if int(teamsList[i]['games']>3) and if int(teamsList[i]['goalsFor'])/int(teamsList[i]['goalsAgainst'])<ratio:…
Consider the set A = {1, 2, 11, {121}, 22, 1212, (111, 212, 112}} Enter the value of Al. (Note: Enter a number).
text file 80 1 2 3 100 100 100 1001 0 2 100 3 4 100 1002 2 0 4 4 100 5 1003 100 4 0 100 100 4 100100 3 4 100 0 3 3 3100 4 100 100 3 0 100 1100 100 5 4 3 100 0 2100 100 100 100 3 1 2 0 My code below. I am getting an error when trying to create my adjacency matrix. i dont know what i am doing wrong def readMatrix(inputfilename): ''' Returns a two-dimentional array created from the data in the given file. Pre: 'inputfilename' is the name of a text file whose first row contains the number of vertices in a graph and whose subsequent rows contain the rows of the adjacency matrix of the graph. ''' # Open the file f = open(inputfilename, 'r') # Read the number of vertices from the first line of the file n = int(f.readline().strip()) # Read the rest of the file stripping off the newline characters and splitting it into # a list of intger values rest = f.read().strip().split() # Create the adjacency matrix adjMat = []…
Write an application in java language using a hash table that finds all the pairs of two integers within the below array that add up to 12. Array = {4,9,6,13,5,3,2,8}
int [] myArray = {2,3,4,5}: What is the length of myArray? type your answer.