머신러닝 프로그래밍 3주차 응용하기-factorial

def factorial(n):
    if n > 1:
        return n * factorial(n-1)
    else:
        return 1
    
result0 = factorial(0)
result1 = factorial(1)
result2 = factorial(2)
result3 = factorial(3)

# f 문자열 포맷
print(f'factorial(0) : {result0}')

print(f"factorial(1) : {result1}") 

print(f'factorial(2) : {result2}') 

print(f'factorial(3) : {result3}')

factorial(0) : 1
factorial(1) : 1
factorial(2) : 2
factorial(3) : 6

# 반복문 사용하기
def factorial_range(n):
    result = 1
    for val in range(1, n+1): 
        result *= val
    return result

result0 = factorial_range(1)
result2 = factorial_range(2)
result4 = factorial_range(4)

print(f"factorial(0) : {result0}")
print(f"factorial(2) : {result2}")
print(f"factorial(4) : {result4}")

factorial(0) : 1
factorial(2) : 2
factorial(4) : 24