Write code to complete printfactorials recursive case Sample

Write code to complete print_factorial()\'s recursive case. Sample output if user_val is 5:

def print_factorial(fact_counter, fact_value):
    output_string = \'\'

    if fact_counter == 0:      # Base case: 0! = 1
        output_string += \'1\'
    elif fact_counter == 1:    # Base case: print 1 and result
        output_string += str(fact_counter) + \' = \' + str(fact_value)
    else:                       # Recursive case
        output_string += str(fact_counter) + \' * \'
        next_counter = fact_counter - 1
        next_value = next_counter * fact_value
        output_string += \'\'\'Your solution goes here\'\'\'

    return output_string

user_val = 5
print(\'%d! = \' % user_val, end=\"\")
print(print_factorial(user_val, user_val))

Solution

def print_factorial(fact_counter, fact_value):
output_string = \'\'
if fact_counter == 0: # Base case: 0! = 1
output_string += \'1\'
elif fact_counter == 1: # Base case: print 1 and result
output_string += str(fact_counter) + \' = \' + str(fact_value)
else: # Recursive case
output_string += str(fact_counter) + \' * \'
next_counter = fact_counter - 1
next_value = next_counter * fact_value
output_string += print_factorial(fact_counter-1, next_value)
return output_string
user_val = 5
print(\'%d! = \' % user_val, end=\"\")
print(print_factorial(user_val, user_val))

Output:

sh-4.3$ python main.py 5! = 5 * 4 * 3 * 2 * 1 = 120