Computer Science
Which is the most appropriate definition for recursion?
- A function that calls itself
- A function execution instance that calls another execution instance of the same function
- A class method that calls another class method
- An inbuilt method that is automatically called
Answer
A function execution instance that calls another execution instance of the same function
Reason — Recursion is defined as a function execution instance that calls another execution instance of the same function. In recursive functions, the function calls itself, creating a chain of function calls where each instance of the function invokes another instance until a termination condition is met.
Related Questions
Which values are used by the functions to communicate information back to the caller?
- local
- global
- return
- random
What is the output of the program given below?
x = 50 def func(x): x = 2 func(x) print('x is now', x)- x is now 50
- x is now 2
- x is now 100
- Error
Fill in the line of code for calculating the factorial of a number:
def fact(num): if num == 0: return 1 else: return...............- num*fact (num-1)
- (num-1) * (num-2)
- num* (num-1)
- fact (num) *fact (num-1)
Which of the following statements is false about recursion?
- Every recursive function must have a base case.
- Infinite recursion can occur if the base case isn't properly mentioned.
- A recursive function makes the code easier to understand.
- Every recursive function must have a return value.