Recursive Functions: Rules and Structure
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Questions and Answers

What is recursion in programming?

  • A process involving conditional statements
  • A process in which a function calls itself (correct)
  • A process in which a function uses loops
  • A process involving memory allocation

    • What is the first step in designing a recursive function?

  • Implement the general case
  • Determine the base case (correct)
  • Test for memory allocation
  • Combine the base and general cases

    • What is the recursive formula for calculating factorial as shown in the text?

  • $fact(n) = n + fact(n-1)$
  • $fact(n) = n*fact(n-1)$ (correct)
  • $fact(n) = fact(n+1) - n$
  • $fact(n) = n^2 * fact(n-1)$

    • What is a limitation of recursive solutions according to the text?

    <p>Extensive overhead due to function calls</p> Signup and view all the answers

    In recursion, what must every recursive call do according to the text?

    <p>Solve part of the problem or reduce its size</p> Signup and view all the answers

    How does recursion differ from iterative solutions based on the text?

    <p>Recursion has extensive overhead due to function calls, unlike iteration</p> Signup and view all the answers

    What is recursion in programming?

    <p>A repetitive process in which a function calls itself</p> Signup and view all the answers

    Which step comes first in designing a recursive function?

    <p>Determine the base case</p> Signup and view all the answers

    What is the main limitation of recursive solutions as stated in the text?

    <p>They involve extensive overhead due to function calls</p> Signup and view all the answers

    How is the factorial of a number calculated in a recursive manner?

    <p>n * fact(n-1)</p> Signup and view all the answers

    What is the key aspect that must be determined after establishing the base case in a recursive function design?

    <p>The exit condition for the recursion</p> Signup and view all the answers

    Why can recursive solutions be less memory-efficient compared to iterative solutions?

    <p>They use up memory allocation with each function call</p> Signup and view all the answers

    What must every recursive call in a function accomplish?

    <p>Reduce the size of the problem being solved</p> Signup and view all the answers

    'Factorial Function' is an example used to illustrate:

    <p>'Factorial' implementation in CodeChum</p> Signup and view all the answers

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