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You'll write a function altSum(1st: list[int]) -> int that takes a list of numbers and returns the alternating sum of the numbers in the list (the operators alternate between addition and subtraction, starting with addition). For example: • altSum([]) returns 0. • altSum([1,3,5,2]) returns 1 (that is, 1+3- 5+2). • altSum([7,7,7,7]) returns 14 (that is, 7+7–7+7). • altSum([31,4,28,5,71]) returns -59 (that is, 31 +4– 28+5– 71).

You'll write a function altSum(1st: list[int]) -> int that takes a list of numbers and returns the alternating sum of the numbers in the list (the operators alternate between addition and subtraction, starting with addition). For example: • altSum([]) returns 0. • altSum([1,3,5,2]) returns 1 (that is, 1+3- 5+2). • altSum([7,7,7,7]) returns 14 (that is, 7+7–7+7). • altSum([31,4,28,5,71]) returns -59 (that is, 31 +4– 28+5– 71).

Computer Networking: A Top-Down Approach (7th Edition)
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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Writing an alternating sum function.

You'll write a function altSum(lst: list[int]) -> int that takes a list of numbers and returns the alternating sum of the numbers in the list (the operators alternate between addition and subtraction, starting with addition). For example: altSum([]) returns 0. • altSum([1,3,5,2]) returns 1 (that is, 1+3-5+2). • altSum([7,7,7,7]) returns 14 (that is, 7+7-7+7). • altSum([31,4,28,5,71]) returns -59 (that is, 31 +4 – 28+5–71).
Transcribed Image Text:You'll write a function altSum(lst: list[int]) -> int that takes a list of numbers and returns the alternating sum of the numbers in the list (the operators alternate between addition and subtraction, starting with addition). For example: altSum([]) returns 0. • altSum([1,3,5,2]) returns 1 (that is, 1+3-5+2). • altSum([7,7,7,7]) returns 14 (that is, 7+7-7+7). • altSum([31,4,28,5,71]) returns -59 (that is, 31 +4 – 28+5–71).
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