recursion python examples

Example 1: recuursion python

# Reccursion in python 
def recursive_method(n):
    if n == 1:
        return 1 
    else:
        return n * recursive_method(n-1)
    # 5 * factorial_recursive(4)
    # 5 * 4 * factorial_recursive(3)
    # 5 * 4 * 3 * factorial_recursive(2)
    # 5 * 4 * 3 * 2 * factorial_recursive(1)
    # 5 * 4 * 3 * 2 * 1 = 120
num = int(input('enter num '))
print(recursive_method(num))

Example 2: recursion python examples

# Recursive function factorial_recursion()

def factorial_recursion(n):  
   if n == 1:  
       return n  
   else:  
       return n*factorial_recursion(n-1)

Example 3: python recursion example

# Recursive Factorial Example
# input: 5 
# output: 120 (5*4*3*2*1)
def factorial(x):
    if x == 1:
        return 1
    else:
        return (x * factorial(x-1))

Example 4: recursion in python

houses = ["Eric's house", "Kenny's house", "Kyle's house", "Stan's house"]

# Each function call represents an elf doing his work 
def deliver_presents_recursively(houses):
    # Worker elf doing his work
    if len(houses) == 1:
        house = houses[0]
        print("Delivering presents to", house)

    # Manager elf doing his work
    else:
        mid = len(houses) // 2
        first_half = houses[:mid]
        second_half = houses[mid:]

        # Divides his work among two elves
        deliver_presents_recursively(first_half)
        deliver_presents_recursively(second_half)

Example 5: recursion python examples

void A(n){
    if(n>1) // Anchor condition
    {
       return A(n-1);
    }
}