numPairs Write a function numPairs that accepts two arguments, a target number and a list of numbers. The function then returns the count of pairs of numbers from the list that sum to the target number. In the first example the answer is 2 because the pairs (0,3) and (1,2) both sum to 3. The pair can be two of the same number, e.g. (2,2) but only if the two 2's are separate twos in the list. In the last example below, there are three 2's, so there are three different pairs (2,2) so there are 5 pairs total that sum to 4. Sample usage:
numPairs Write a function numPairs that accepts two arguments, a target number and a list of numbers. The function then returns the count of pairs of numbers from the list that sum to the target number. In the first example the answer is 2 because the pairs (0,3) and (1,2) both sum to 3. The pair can be two of the same number, e.g. (2,2) but only if the two 2's are separate twos in the list. In the last example below, there are three 2's, so there are three different pairs (2,2) so there are 5 pairs total that sum to 4. Sample usage:
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...
Related questions
Question
In Python IDLE: How would I write a function for the problem in the attached image?
![numPairs
Write a function numPairs that accepts two arguments, a target number and a list of numbers.
The function then returns the count of pairs of numbers from the list that sum to the target
number. In the first example the answer is 2 because the pairs (0,3) and (1,2) both sum to 3. The
pair can be two of the same number, e.g. (2,2) but only if the two 2's are separate twos in the list.
In the last example below, there are three 2's, so there are three different pairs (2,2) so there are
5 pairs total that sum to 4. Sample usage:
>>> numPairs ( 3, [0,1,2,3] )
>>> numPairs( 4, [0,1,2, 3] )
1
>>> numPairs( 6, [0,1,2,3] )
>>> numPairs( 4, [0,1,2,3,4,2] )
3
>>> numPairs( 4, [0,1,2,3,4,2,2] )
>>> numPairs( 4, [0,1,2,3,4,2,2] )==5
True](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc4b85f9b-2931-43f1-91f6-17c8a9947553%2F2373830a-7a70-4171-8565-a37f8f789b16%2F04cmqj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:numPairs
Write a function numPairs that accepts two arguments, a target number and a list of numbers.
The function then returns the count of pairs of numbers from the list that sum to the target
number. In the first example the answer is 2 because the pairs (0,3) and (1,2) both sum to 3. The
pair can be two of the same number, e.g. (2,2) but only if the two 2's are separate twos in the list.
In the last example below, there are three 2's, so there are three different pairs (2,2) so there are
5 pairs total that sum to 4. Sample usage:
>>> numPairs ( 3, [0,1,2,3] )
>>> numPairs( 4, [0,1,2, 3] )
1
>>> numPairs( 6, [0,1,2,3] )
>>> numPairs( 4, [0,1,2,3,4,2] )
3
>>> numPairs( 4, [0,1,2,3,4,2,2] )
>>> numPairs( 4, [0,1,2,3,4,2,2] )==5
True
Expert Solution

Step 1
Actually, python is a easiest programming language.
It has a concise(less) code.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps

Recommended textbooks for you

Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON

Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science

Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning

Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON

Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science

Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning

Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning

Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education

Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY