Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Concept explainers

Computational Systems
The computation systems can be defined as the systems that are capable of solving a problem that includes calculations either mathematical or logical, and are able to produce the result as an output. For example, a simple calculator that is given a set o…
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Consider the following recursive algorithm (same as other exam question). ALGORITHM Q(n) //Input: A positive integer n if n = 1 return 1 else return Q(n-1)+2+n-1 (i) Please design an iterative algorithm computing the same but with similar or better time complexity. (ii) What is the time complexity class of this iterative algorithm that you designed? If it is not better in complexity class than the recursive version, then how it is better/worse in terms of performance? Please write briefly and to the point.
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Transcribed Image Text:Consider the following recursive algorithm (same as other exam question). ALGORITHM Q(n) //Input: A positive integer n if n = 1 return 1 else return Q(n-1)+2+n-1 (i) Please design an iterative algorithm computing the same but with similar or better time complexity. (ii) What is the time complexity class of this iterative algorithm that you designed? If it is not better in complexity class than the recursive version, then how it is better/worse in terms of performance? Please write briefly and to the point.
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