The Complete Python Course - Recursion

The video tutorial introduces the concept of recursion, explaining how a function can call itself to reduce lines of code and improve efficiency. It uses the factorial calculation as an example to demonstrate recursion in Python. The tutorial walks through the process of calculating factorials using recursion, detailing each step and showing how the function calls itself with decremented values until reaching the base case. The explanation highlights the efficiency and logic behind recursion, making it easier to understand through practical examples.

What is the primary benefit of using recursion in programming?

• It complicates the code structure.

• It reduces the lines of code and enhances efficiency.

• It makes the code run slower.

• It increases the number of lines of code.

In a recursive function for calculating factorial, what is the base case?

• When the number is even.

• When the number is 1.

• When the number is 0.

• When the number is negative.

What happens when the recursive function reaches the base case?

• The function throws an error.

• The function returns 1.

• The function calls itself again.

• The function returns 0.

How does the recursive function calculate 7 factorial?

• By multiplying 7 by 6 factorial.

• By adding 7 to 6 factorial.

• By dividing 7 by 6 factorial.

• By subtracting 7 from 6 factorial.

What is the result of 1 factorial in the recursive function?

• 10

• 0

• 1

• 2