What is Recursion?

The video tutorial introduces the concept of recursion, emphasizing that it is a function that calls itself. It highlights the importance of a base case to prevent infinite loops. An example using 'Hello World' demonstrates recursion, showing how it can lead to infinite loops if not properly managed. The tutorial explains Python's default recursion limit and how to implement a base case to control recursion. The video concludes with a recap of key points, ensuring a clear understanding of recursion and its practical application.

What is a key characteristic of a recursive function?

• It requires no parameters.

• It never stops executing.

• It calls itself.

• It is always faster than loops.

In the 'Hello World' recursion example, what issue arises without a base case?

• The function will print 'Hello World' only once.

• The function will not execute at all.

• The function will enter an infinite loop.

• The function will print 'Hello World' twice.

What is the default recursion limit in Python?

• 500

• 1000

• 2000

• Unlimited

Why is it important to define a base case in a recursive function?

• To make the function more complex.

• To prevent the function from calling itself indefinitely.

• To avoid using loops.

• To ensure the function runs faster.

How can you stop a recursive function from executing indefinitely?

• By increasing the recursion limit.

• By defining a base case.

• By using a return statement.

• By using a while loop.

What happens when the base case condition is met in a recursive function?

• The function resets its parameters.

• The function continues to call itself.

• The function starts a new loop.

• The function stops calling itself.

In the example provided, what is the base case for stopping the recursion?

• When the count reaches 0.

• When the count reaches 100.

• When the count reaches 500.

• When the count reaches 1000.