Algorithm Complexity: Sorting Algorithm Performance
30 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary factor that determines the efficiency of a computer system?

  • The amount of memory available
  • The speed of the processor
  • The type of programming language used
  • The quality of the algorithm used (correct)

What is the time complexity of the sorting algorithm used on computer A?

  • n
  • n lg n
  • 2n
  • n2 (correct)

How much faster is computer A than computer B in terms of raw computing power?

  • 500 times
  • 1000 times (correct)
  • 100 times
  • 2000 times

What is the approximate time taken to sort an array of 10 million numbers on computer A?

<p>More than 5.5 hours (D)</p> Signup and view all the answers

What is the time complexity of the sorting algorithm used on computer B?

<p>n lg n (D)</p> Signup and view all the answers

What is the approximate time taken to sort an array of 10 million numbers on computer B?

<p>Under 20 minutes (A)</p> Signup and view all the answers

What is the form of the linear function of n?

<p>an+b (A)</p> Signup and view all the answers

Why do we focus on the worst-case running time?

<p>Because it gives a guaranteed upper bound on the running time (C)</p> Signup and view all the answers

What happens to the lower-order terms when analyzing the order of growth?

<p>They are dropped (C)</p> Signup and view all the answers

What is the order of growth of the worst-case running time of insertion sort?

<p>n2 (D)</p> Signup and view all the answers

What does the notation Θ(n2) represent?

<p>The running time grows like n2 (C)</p> Signup and view all the answers

When does the worst-case running time of an algorithm often occur?

<p>When the item being searched for is not present (B)</p> Signup and view all the answers

What is the name of the method that involves guessing the form of the solution and then verifying it through induction?

<p>Substitution method (C)</p> Signup and view all the answers

What is the purpose of the inductive hypothesis in the substitution method?

<p>To apply the solution to smaller values (B)</p> Signup and view all the answers

What is the recurrence equation given in the text?

<p>T(n) = 4T(n/2) + n (A)</p> Signup and view all the answers

What is the height of the recursion tree for the recurrence T(n) = 3T(n/4) + cn^2?

<p>log4n (A)</p> Signup and view all the answers

What is the purpose of constructing a recursion tree?

<p>To determine the total cost of all levels of recursion (A)</p> Signup and view all the answers

What is the sub problem size at depth i in the recursion tree for the recurrence T(n) = 3T(n/4) + cn^2?

<p>n/4i (B)</p> Signup and view all the answers

Why do inefficient sorting algorithms like selection sort make redundant comparisons?

<p>Because their outcome has already been determined by earlier comparisons (B)</p> Signup and view all the answers

What is the purpose of converting a sorting algorithm into a decision tree?

<p>To determine the maximum number of comparisons made by the algorithm (B)</p> Signup and view all the answers

What is the relationship between T(n) and the height of the decision tree?

<p>The height of the decision tree is equal to T(n) (B)</p> Signup and view all the answers

What is the maximum number of different final actions that a sorting algorithm can take?

<p>2T(n) (C)</p> Signup and view all the answers

What is the purpose of A(n) in the context of sorting algorithms?

<p>To represent the number of different final actions the algorithm can take (B)</p> Signup and view all the answers

How many possible actions must any sorting algorithm distinguish between?

<p>n! (C)</p> Signup and view all the answers

What is the minimum number of different actions required by an algorithm to sort ndistinct numbers?

<p>n! (A)</p> Signup and view all the answers

What is the relationship between A(n) and n! in the context of sorting algorithms?

<p>A(n) &gt;= n! (D)</p> Signup and view all the answers

What is the lower bound on the worst-case running time of a comparison-based sorting algorithm?

<p>n log n (A)</p> Signup and view all the answers

What is the purpose of Stirling's approximation in the context of sorting algorithms?

<p>To provide a lower bound on the time complexity (A)</p> Signup and view all the answers

What is the correct sorted order of the array a = {5, 3, 2, 9}?

<p>{2, 3, 5, 9} (C)</p> Signup and view all the answers

What is the generalization of the lower bound on sorting algorithms?

<p>It can be applied to a number of other problems (D)</p> Signup and view all the answers

More Like This

Sorting Algorithms
8 questions

Sorting Algorithms

LighterHouston avatar
LighterHouston
Algorithm Complexity and Sorting Algorithms
26 questions
Algoritmi i kompleksnost
25 questions

Algoritmi i kompleksnost

UnbiasedLemur3035 avatar
UnbiasedLemur3035
Use Quizgecko on...
Browser
Browser