Algorithm 2 VERY STRANGE ALGORITHM Require: Integer n 1: S+0 2: for i 1... n do 3: S+S+2-2-1 4: end for 5: return S What are the correct values for X, Y and Z in order to obtain a correct loop invariant: At the beginning of iteration / (i.e., after / is updated in Line 2 and before the code in Line 3 is executed) the following property holds: S-X-2 +2" (1- (7) Hint: recall that 2-21-1. . X: Y: Z: :
Algorithm 2 VERY STRANGE ALGORITHM Require: Integer n 1: S+0 2: for i 1... n do 3: S+S+2-2-1 4: end for 5: return S What are the correct values for X, Y and Z in order to obtain a correct loop invariant: At the beginning of iteration / (i.e., after / is updated in Line 2 and before the code in Line 3 is executed) the following property holds: S-X-2 +2" (1- (7) Hint: recall that 2-21-1. . X: Y: Z: :
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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Question
![Consider the following very strange algorithm:
Algorithm 2 VERY STRANGE ALGORITHM
Require: Integer n
1: S+0
2: for i 1... ndo
3: S+S+2-2-1
4: end for
5: return S
What are the correct values for X, Y and Z in order to obtain a correct loop invariant:
At the beginning of iteration; (i.e., after, is updated in Line 2 and before the code in Line 3 is executed) the following property holds:
S-X-2 +2^(1-2)
Hint: recall that 2-2¹¹-1.
• X:
• Y:
2:](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8fe3f235-bb32-49eb-97a5-b78d29c7ef32%2F00e4f005-ea29-4822-90f6-f4fd8c5830d3%2Ffla6z_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Consider the following very strange algorithm:
Algorithm 2 VERY STRANGE ALGORITHM
Require: Integer n
1: S+0
2: for i 1... ndo
3: S+S+2-2-1
4: end for
5: return S
What are the correct values for X, Y and Z in order to obtain a correct loop invariant:
At the beginning of iteration; (i.e., after, is updated in Line 2 and before the code in Line 3 is executed) the following property holds:
S-X-2 +2^(1-2)
Hint: recall that 2-2¹¹-1.
• X:
• Y:
2:
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