Regular Chatbot
10 Points
regular-expressions
Instructions
You have been hired as a Regular Expression Specialist in a company that is developing a Chatbot.
It is in a very basic phase of development, hence your mission is to use Regular Expressions to improve the chatbot's ability to understand and generate natural language.
Note
For learning purposes, please solve these tasks using Regular Expressions.
We know that alternatives are sometimes possible (and may even be more performant!)
1. Check Valid Command
Apart from being smart, the Chatbot is also a loyal assistant.
To ask something to the chatbot, the user must say the word “Chatbot” in the first position of the command.
It doesn"t matter if the keyword is in UPPERCASE or lowercase. The important aspect here is the position of the word.
Implement the function is_valid_command() that helps the Chatbot recognize when the user is giving a command.
julia> is_valid_command("Chatbot, play a song from the 80's.")
True
julia> is_valid_command("Hey Chatbot, where is the closest pharmacy?")
False
julia> is_valid_command("CHATBOT, do you have a solution for this challenge?")
True2. Remove Encrypted Emojis
The Chatbot has a difficult time understanding how humans use emojis to express their emotions.
When the chatbot receives user messages, each emoji is represented as “emoji” followed by its id number.
Implement the remove_emoji() method to take a string and remove all the emoji’s encryption throughout the message.
Lines not containing emoji’s text should be returned unmodified.
Just remove the emoji string. Do not attempt to adjust the whitespace.
julia> remove_emoji("I love playing videogames emoji3465 it's one of my hobbies")
"I love playing videogames it's one of my hobbies"3. Check Valid Phone Number
Considering the download of chatbot features on a mobile app, the user is expected to write a phone number during the conversation.
The problem is that the chatbot can only read and validate a number with a specific format.
If the number is valid (matches the character sequence specified by the regular expression), the chatbot answers with a message thanking the user and confirming the number. If the number is invalid, the function informs the user that the phone number is not valid.
The expected format is: (+##) ###-###-###
julia> check_phone_number("(+34) 659-771-594")
"Thanks! You can now download me to your phone."
julia> check_phone_number("659-771-594")
"Oops, it seems like I can't reach out to 659-771-594"4. Get Website Link
The Chatbot is a really curious software. Even though he can search on the internet about a particular topic, he likes to ask users about cool websites or URL’s to go find relevant information.
Example of Conversation:
- Chatbot: Hey username, I would like to learn how to code in JavaScript, do you know any cool website where I could learn?
- User: I learned a lot from exercism.org
Implement the function getURL() which is able to return an array with just the link of each website.
julia> getURL("I learned a lot from exercism.org")
["exercism.org"]5. Greet the User
For storing data from all the persons who have had a conversation with, the chatbot is able to get the Full Name from the user’s profile in this style: “smith, john”.
In this way, we want our chatbot to be really polite and make a good impression.
Write the function nice_to_meet_you() that takes a string with the full name of the user, and returns the string “Nice to meet you, John Smith”
julia> str = "Smith, John"
julia> nice_to_meet_you(str)
"Nice to meet you, John Smith"Regular Chatbot
10 Points
regular-expressions
Instructions
You have been hired as a Regular Expression Specialist in a company that is developing a Chatbot.
It is in a very basic phase of development, hence your mission is to use Regular Expressions to improve the chatbot's ability to understand and generate natural language.
Note
For learning purposes, please solve these tasks using Regular Expressions.
We know that alternatives are sometimes possible (and may even be more performant!)
1. Check Valid Command
Apart from being smart, the Chatbot is also a loyal assistant.
To ask something to the chatbot, the user must say the word “Chatbot” in the first position of the command.
It doesn"t matter if the keyword is in UPPERCASE or lowercase. The important aspect here is the position of the word.
Implement the function is_valid_command() that helps the Chatbot recognize when the user is giving a command.
julia> is_valid_command("Chatbot, play a song from the 80's.")
True
julia> is_valid_command("Hey Chatbot, where is the closest pharmacy?")
False
julia> is_valid_command("CHATBOT, do you have a solution for this challenge?")
True2. Remove Encrypted Emojis
The Chatbot has a difficult time understanding how humans use emojis to express their emotions.
When the chatbot receives user messages, each emoji is represented as “emoji” followed by its id number.
Implement the remove_emoji() method to take a string and remove all the emoji’s encryption throughout the message.
Lines not containing emoji’s text should be returned unmodified.
Just remove the emoji string. Do not attempt to adjust the whitespace.
julia> remove_emoji("I love playing videogames emoji3465 it's one of my hobbies")
"I love playing videogames it's one of my hobbies"3. Check Valid Phone Number
Considering the download of chatbot features on a mobile app, the user is expected to write a phone number during the conversation.
The problem is that the chatbot can only read and validate a number with a specific format.
If the number is valid (matches the character sequence specified by the regular expression), the chatbot answers with a message thanking the user and confirming the number. If the number is invalid, the function informs the user that the phone number is not valid.
The expected format is: (+##) ###-###-###
julia> check_phone_number("(+34) 659-771-594")
"Thanks! You can now download me to your phone."
julia> check_phone_number("659-771-594")
"Oops, it seems like I can't reach out to 659-771-594"4. Get Website Link
The Chatbot is a really curious software. Even though he can search on the internet about a particular topic, he likes to ask users about cool websites or URL’s to go find relevant information.
Example of Conversation:
- Chatbot: Hey username, I would like to learn how to code in JavaScript, do you know any cool website where I could learn?
- User: I learned a lot from exercism.org
Implement the function getURL() which is able to return an array with just the link of each website.
julia> getURL("I learned a lot from exercism.org")
["exercism.org"]5. Greet the User
For storing data from all the persons who have had a conversation with, the chatbot is able to get the Full Name from the user’s profile in this style: “smith, john”.
In this way, we want our chatbot to be really polite and make a good impression.
Write the function nice_to_meet_you() that takes a string with the full name of the user, and returns the string “Nice to meet you, John Smith”
julia> str = "Smith, John"
julia> nice_to_meet_you(str)
"Nice to meet you, John Smith"