2. A positive integer is "perfect" if it equals the sum of all of its factors, excluding the number itself. Using a list comprehension and the function "factors", define a function "perfects ::
2. A positive integer is "perfect" if it equals the sum of all of its factors, excluding the number itself. Using a list comprehension and the function "factors", define a function "perfects ::
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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![2. A positive integer is "perfect" if it equals the sum of
all of its
factors, excluding the number itself. Using a list
comprehension and
the function "factors", define a function "perfects ::
Int -> [Int]"
that returns the list of all perfect numbers up to a
given limit. For
example (in GHCI):
> perfects 500
[6,28,496]
Note that "factors" is just:
factors: Int -> [Int]
factors n = [x | x Bool" which
returns "True" if the given "Int" is perfect, and "False"
otherwise.
Then use "isperfect" as a guard in a list
comprehension to filter out
all of the non-perfect integers (i.e., to keep only the
perfect
integers).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F3b8f61c3-b57f-4943-8538-4e0823d8c6e6%2Fd7154342-ca4e-41c1-9ae9-47b9b3183216%2Fn29mq3p_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. A positive integer is "perfect" if it equals the sum of
all of its
factors, excluding the number itself. Using a list
comprehension and
the function "factors", define a function "perfects ::
Int -> [Int]"
that returns the list of all perfect numbers up to a
given limit. For
example (in GHCI):
> perfects 500
[6,28,496]
Note that "factors" is just:
factors: Int -> [Int]
factors n = [x | x Bool" which
returns "True" if the given "Int" is perfect, and "False"
otherwise.
Then use "isperfect" as a guard in a list
comprehension to filter out
all of the non-perfect integers (i.e., to keep only the
perfect
integers).
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