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Recursive Solutions and Binary Search Quiz

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Questions and Answers

What is the purpose of the base case in a recursive solution?

Terminate the recursive processing (correct)

Generate the terms in a sequence

Select the pivot item

Manage local variables

Why is a divide-and-conquer strategy used in binary search?

To efficiently search through and divide the data (correct)

To compute the same values over and over

To determine the pivot item

To perform sequential searches

What is a recurrence relation used for?

Selecting the pivot item

Generating terms in a sequence (correct)

Terminating recursive processing

Managing local environment

Why is computing the Fibonacci sequence recursively considered problematic?

Computing the same values repeatedly Signup and view all the answers

What does each box in a box trace roughly correspond to?

Activation record Signup and view all the answers

What is NOT contained in each box in a box trace?

The function's execution time Signup and view all the answers

What event triggers the creation of a new box in the box trace for a recursive function?

The function is called Signup and view all the answers

What happens if a recursive function never reaches a base case?

An infinite sequence of recursive calls occurs Signup and view all the answers

In a recursive method that writes a string of characters in reverse order, what defines the base case?

A string with a length of 0 Signup and view all the answers

What is a precondition for a method that computes the nth Fibonacci number?

n is a positive integer Signup and view all the answers

How many base cases does a recursive binary search of a sorted array have?

2 Signup and view all the answers

When solving a problem by breaking it into smaller problems, how should the smaller problems be related to the base case?

Closer to Signup and view all the answers