COMPUTER SCIENCE ILLUMINATED
COMPUTER SCIENCE ILLUMINATED
7th Edition
ISBN: 9781284208047
Author: Dale
Publisher: JONES+BART
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Expert Solution & Answer
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Chapter 18, Problem 1E
Program Description Answer

O (N!) is the Big-O notation for factorial time.

Hence, the correct option is “G”.

Expert Solution & Answer
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Explanation of Solution

O (N!):

  • Big-O notation is used to describe the limiting behavior of a function.
  • O represents the order of a function.
  • An algorithm is said to be in factorial time if its time complexity is O (N!).
  • These algorithms are costlier than exponential algorithms.
  • Factorial time algorithms generally run slower than exponential algorithms asymptotically.
  • O (N!) grows faster than exponential time algorithms when the base is constant such as 2n or en. Hence N! grows very fast when it is compared to the power of N.
  • But N2 grows faster than factorial time algorithms because as N increases base also increases.
  • An example is solving travelling salesman problem by brute force search.

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