Describe a procedure that takes as input two integers a and b such that 0 < a < b and, using fair coin flips, produces as output heads with probability a/b and tails with probability (b – a)/b. Give a bound on the expected number of coin flips, which should be O(1). (Hint: Represent a /b in binary.)

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
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C.2-6 *
Describe a procedure that takes as input two integers a and b such that 0 < a < b
and, using fair coin flips, produces as output heads with probability a/b and tails
with probability (b – a)/b. Give a bound on the expected number of coin flips,
which should be O(1). (Hint: Represent a /b in binary.)
Transcribed Image Text:C.2-6 * Describe a procedure that takes as input two integers a and b such that 0 < a < b and, using fair coin flips, produces as output heads with probability a/b and tails with probability (b – a)/b. Give a bound on the expected number of coin flips, which should be O(1). (Hint: Represent a /b in binary.)
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