Problem 2. Let n = 2' – 1 1 for some positive integer 1. Suppose someone claims to hold an unsorted array A[1 . . n] of distinct l-bit strings; thus, exactly one l-bit string does not appear in A. Suppose further that the only way we can access A is by calling the function FETCHBIT(i, j), which returns the jl bit of the string A[i] in O(1) time. Describe an algorithm to find the missing string in

Computer Networking: A Top-Down Approach (7th Edition)
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ISBN:9780133594140
Author:James Kurose, Keith Ross
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Chapter1: Computer Networks And The Internet
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Problem 2.
21
- 11 for some positive integer 1. Suppose someone claims to hold an unsorted array
A[1 . .. n] of distinct l-bit strings; thus, exactly one l-bit string does not appear in A. Suppose
further that the only way we can access A is by calling the function FETCHBIT(i, j), which returns
the jth bit of the string A[i] in O(1) time. Describe an algorithm to find the missing string in
Let n =
A using only O(n) calls to FETCHBIT. Again, give either pseucode or write a generic description.
Demonstrating the algorithm on a specific example will not fetch any marks.
Transcribed Image Text:Problem 2. 21 - 11 for some positive integer 1. Suppose someone claims to hold an unsorted array A[1 . .. n] of distinct l-bit strings; thus, exactly one l-bit string does not appear in A. Suppose further that the only way we can access A is by calling the function FETCHBIT(i, j), which returns the jth bit of the string A[i] in O(1) time. Describe an algorithm to find the missing string in Let n = A using only O(n) calls to FETCHBIT. Again, give either pseucode or write a generic description. Demonstrating the algorithm on a specific example will not fetch any marks.
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