(1) Using the fact that you can sort a 5-long array of numbers with 7 comparisons, describe an algorithm that can sort a 7-long array with 13 comparisons. Explain using plain English and try to avoid drawings. (ii) Prove that the algorithm in part (i) is optimal, in the sense that you need at least 13 comparisons to sort a 7-long array of numbers.

College Algebra
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ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter3: Polynomial And Rational Functions
Section: Chapter Questions
Problem 6CC: When we divide a polynomial P(x) by a divisor D(x), the Division Algorithm tells us that we can...
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(i) Using the fact that you can sort a 5-long array of numbers with 7 comparisons, describe an algorithm that can sort a 7-long array with 13 comparisons. Explain using
plain English and try to avoid drawings.
(ii) Prove that the algorithm in part (i) is optimal, in the sense that you need at least 13 comparisons to sort a 7-long array of numbers.
Transcribed Image Text:Question 1 (i) Using the fact that you can sort a 5-long array of numbers with 7 comparisons, describe an algorithm that can sort a 7-long array with 13 comparisons. Explain using plain English and try to avoid drawings. (ii) Prove that the algorithm in part (i) is optimal, in the sense that you need at least 13 comparisons to sort a 7-long array of numbers.
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