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Write a function differBy which takes two arguments, a number N and a list of numbers L, and returns a new list containing all pairs of adjacent (side-by-side) numbers X and Y in the list L where the difference between X and Y is exactly N. Each such pair of numbers should be in a sublist of the returned list. For example, the call (differBy 1 (4 3 56734)) returns the list ((4 3) (5 6) (6 7) (34)) because the input number N is equal to 1, and the first two numbers (4 and 3) differ by 1, as do the third and fourth numbers (5 and 6), the fourth and fifth numbers (6 and 7) and the sixth and seventh numbers (3 and 4). Note that pairs of numbers are returned in the order they appear in the input list.

Write a function differBy which takes two arguments, a number N and a list of numbers L, and returns a new list containing all pairs of adjacent (side-by-side) numbers X and Y in the list L where the difference between X and Y is exactly N. Each such pair of numbers should be in a sublist of the returned list. For example, the call (differBy 1 (4 3 56734)) returns the list ((4 3) (5 6) (6 7) (34)) because the input number N is equal to 1, and the first two numbers (4 and 3) differ by 1, as do the third and fourth numbers (5 and 6), the fourth and fifth numbers (6 and 7) and the sixth and seventh numbers (3 and 4). Note that pairs of numbers are returned in the order they appear in the input list.

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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Write a function differBy which takes two arguments, a number N and a list of numbers L, and returns a new list containing all pairs of adjacent (side-by-side) numbers X and Y in the list L where the difference between X and Y is exactly N. Each such pair of numbers should be in a sublist of the returned list. For example, the call (differBy 1 '(4 3 567 3 4)) returns the list ((4 3) (5 6) (6 7) (3 4)) because the input number N is equal to 1, and the first two numbers (4 and 3) differ by 1, as do the third and fourth numbers (5 and 6), the fourth and fifth numbers (6 and 7) and the sixth and seventh numbers (3 and 4). Note that pairs of numbers are returned in the order they appear in the input list. For example: Test Result ((4 3) (56) (6 7) (34)) (differBy 1 (4 3 5 6 7 3 4)) (differBy 2 (8 6 5 6 4 2) ) ((8 6) (64) (42)) (differBy 3 (5 1 4 8 5 2 3)) ((1 4) (8 5) (5 2))
Transcribed Image Text:Write a function differBy which takes two arguments, a number N and a list of numbers L, and returns a new list containing all pairs of adjacent (side-by-side) numbers X and Y in the list L where the difference between X and Y is exactly N. Each such pair of numbers should be in a sublist of the returned list. For example, the call (differBy 1 '(4 3 567 3 4)) returns the list ((4 3) (5 6) (6 7) (3 4)) because the input number N is equal to 1, and the first two numbers (4 and 3) differ by 1, as do the third and fourth numbers (5 and 6), the fourth and fifth numbers (6 and 7) and the sixth and seventh numbers (3 and 4). Note that pairs of numbers are returned in the order they appear in the input list. For example: Test Result ((4 3) (56) (6 7) (34)) (differBy 1 (4 3 5 6 7 3 4)) (differBy 2 (8 6 5 6 4 2) ) ((8 6) (64) (42)) (differBy 3 (5 1 4 8 5 2 3)) ((1 4) (8 5) (5 2))
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