Linear Search Quiz
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Questions and Answers

What is the worst-case time complexity of linear search?

  • $O(rac{n}{2})$
  • $O(rac{n^2}{2})$
  • $O(n)$ (correct)
  • $O(n^2)$

    • In linear search, how many comparisons are made on average in the best case scenario?

  • $2n$
  • $n+1$ (correct)
  • $n-1$
  • $rac{n}{2}$

    • What is the purpose of a sentinel in linear search?

  • To reorder the list
  • To reduce the number of comparisons per iteration (correct)
  • To terminate the search successfully
  • To increase the time complexity

    • Why is linear search rarely practical compared to other search algorithms?

    <p>Other algorithms allow significantly faster searching for all but short lists</p> Signup and view all the answers

    What happens if the linear search algorithm reaches the end of the list without finding a match?

    <p>The search terminates unsuccessfully</p> Signup and view all the answers

    What is the average case number of comparisons for linear search with a list of n elements?

    <p>$n+1/2$</p> Signup and view all the answers

    What is the purpose of a sentinel in linear search?

    <p>To reduce the number of comparisons made per iteration</p> Signup and view all the answers

    What is the worst-case time complexity of linear search?

    <p>$O(n)$</p> Signup and view all the answers

    How many comparisons does linear search make at most, when searching for an element within a list?

    <p>$n$</p> Signup and view all the answers

    Why is linear search rarely practical compared to other search algorithms?

    <p>Other algorithms allow significantly faster searching for all but short lists</p> Signup and view all the answers

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