In a recursive implementation of binary search, what is the base case?

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Question: In a recursive implementation of binary search, what is the base case?

Options:

Correct Answer: When the left index exceeds the right index

Solution:

The base case for recursion in binary search is when the left index exceeds the right index, indicating the target is not found.

In a recursive implementation of binary search, what is the base case?

In a recursive implementation of binary search, what is the base case?

Step 1: Understand that binary search is a method to find a target value in a sorted array.
Step 2: In a recursive function, we keep dividing the array into halves.
Step 3: We use two indices: 'left' (the start of the current search range) and 'right' (the end of the current search range).
Step 4: The base case is a condition that stops the recursion. For binary search, this happens when 'left' is greater than 'right'.
Step 5: When 'left' > 'right', it means the target value is not in the array, and we should stop searching.

Base Case in Recursion – The condition under which the recursive function stops calling itself, crucial for preventing infinite recursion.
Binary Search Algorithm – A search algorithm that finds the position of a target value within a sorted array by repeatedly dividing the search interval in half.