Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
Bartleby Related Questions Icon

Related questions

Q: Python guidelines?
A: Guidelines for writing efficient, maintainable and best-practice compliant Python code are
Q: Differentiate between procedural and object-oriented programming languages.
A: Procedural programming: It is characterised as a programming language based on calling procedures…
Q: Differentiate between object-oriented and procedural programming languages and explain your…
A:
Question

Python Language

Dan's recently announced that he's teaching n top-secret courses next semester. Instead of enrolling in them through ACORN, students need to email Dan to express their interests. These courses are numbered from 1 to n in some arbitrary order. In particular, if a student named s is interested in taking a course c, they need to send an email to Dan containing the message c s. Note that if a student is interested in taking multiple courses, they need to send multiple emails, one per course. Upon receiving a message c s, Dan looks at the list of students already enrolled in course c. If there's already a student on the list whose name is too similar to s, Dan assumes s is the same student and ignores the message. Otherwise, he enrollss in the course. Dan considers two names too similar if and only if they have the same length and differ in at most one letter (note that "a" and "A" are considered the same letter). For example, "Josh" and "Josh" are too similar. "Sam" and "CaM" are too similar as well. However, neither "Max" and "Cat" nor "Ann" and "Anne" are too similar. Dan has a lot of students and teaches a lot of courses. Consequently, it would take him forever to process the messages sent by the students one-by-one manually. Instead, he's asking you to help him out by writing a program that takes in the messages as the input and outputs, for every course, the list of the students enrolled in that course in the order of their enrolments. Filename Your filename for this question must be q2.py. Input The first line of the input consists of two space-separated integers n and m, denoting the number of secret courses Dan is teaching next semester and the number of messages sent by the students, respectively. The m messages will be described in the following m lines in chronological order. The i-th line describes the i-th message and consists of an integer c_i followed by a string s_i. This indicates that a student named s_i wants to enrol in course ci. Output You should output exactly n lines. The i-th line should contain the names of the students enrolled in the i-th course in the order of enrolment (note that the line would be empty if there were no students enrolled in the course). These names should be separated by single spaces. Sample Input 1 26 1 alex 1 Alex 2 sam 1 alix 1 Alix 2 cam Sample Output 1 alex sam Sample 1 Explanation • The first line of the input indicates that there are 2 courses and 6 messages to process. • Dan ignores the second, fourth, fifth, and sixth messages. • The second, fourth, and fifth messages are all ignored because "Alex", "alix", and "Alix" are all too similar to "alex". The sixth message is ignored because "caM" is too similar to "sam".
expand button
Transcribed Image Text:Dan's recently announced that he's teaching n top-secret courses next semester. Instead of enrolling in them through ACORN, students need to email Dan to express their interests. These courses are numbered from 1 to n in some arbitrary order. In particular, if a student named s is interested in taking a course c, they need to send an email to Dan containing the message c s. Note that if a student is interested in taking multiple courses, they need to send multiple emails, one per course. Upon receiving a message c s, Dan looks at the list of students already enrolled in course c. If there's already a student on the list whose name is too similar to s, Dan assumes s is the same student and ignores the message. Otherwise, he enrollss in the course. Dan considers two names too similar if and only if they have the same length and differ in at most one letter (note that "a" and "A" are considered the same letter). For example, "Josh" and "Josh" are too similar. "Sam" and "CaM" are too similar as well. However, neither "Max" and "Cat" nor "Ann" and "Anne" are too similar. Dan has a lot of students and teaches a lot of courses. Consequently, it would take him forever to process the messages sent by the students one-by-one manually. Instead, he's asking you to help him out by writing a program that takes in the messages as the input and outputs, for every course, the list of the students enrolled in that course in the order of their enrolments. Filename Your filename for this question must be q2.py. Input The first line of the input consists of two space-separated integers n and m, denoting the number of secret courses Dan is teaching next semester and the number of messages sent by the students, respectively. The m messages will be described in the following m lines in chronological order. The i-th line describes the i-th message and consists of an integer c_i followed by a string s_i. This indicates that a student named s_i wants to enrol in course ci. Output You should output exactly n lines. The i-th line should contain the names of the students enrolled in the i-th course in the order of enrolment (note that the line would be empty if there were no students enrolled in the course). These names should be separated by single spaces. Sample Input 1 26 1 alex 1 Alex 2 sam 1 alix 1 Alix 2 cam Sample Output 1 alex sam Sample 1 Explanation • The first line of the input indicates that there are 2 courses and 6 messages to process. • Dan ignores the second, fourth, fifth, and sixth messages. • The second, fourth, and fifth messages are all ignored because "Alex", "alix", and "Alix" are all too similar to "alex". The sixth message is ignored because "caM" is too similar to "sam".
Sample Input 2 3 16 3 jun 3 Jin 1 Li 2 Kitty 2 Josh 3 Bob 1 Dave 2 Jose 1 David 3 Rob 3 Anne 3 Ann 2 Kevin 2 Lara 1 ALI 3 Xin Sample Output 2 Li Dave David ALI Kitty Josh Kevin Lara jun Bob Anne Ann Xin
expand button
Transcribed Image Text:Sample Input 2 3 16 3 jun 3 Jin 1 Li 2 Kitty 2 Josh 3 Bob 1 Dave 2 Jose 1 David 3 Rob 3 Anne 3 Ann 2 Kevin 2 Lara 1 ALI 3 Xin Sample Output 2 Li Dave David ALI Kitty Josh Kevin Lara jun Bob Anne Ann Xin
Expert Solution
Check Mark
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
See solutionCheck out a sample Q&A here
Step 1
VIEW
Step 2
VIEW
Step 3
VIEW
bartleby

Step by stepSolved in 3 steps with 2 images

See solution
Check out a sample Q&A here
Blurred answer
Still need help?
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

When I run the code it doesn't work meaning I can't input any thing. Could you please help me with that? 

Solution
Bartleby Expert
by Bartleby Expert
SEE SOLUTION
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

When I run the code it doesn't work meaning I can't input any thing. Could you please help me with that? 

Solution
Bartleby Expert
by Bartleby Expert
SEE SOLUTION
Knowledge Booster
Background pattern image
Computer Science
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
Recommended textbooks for you
Text book image
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Text book image
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Text book image
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
Text book image
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Text book image
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Text book image
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
SEE MORE TEXTBOOKS