Question

Which is the better factorial function?

def fact(x):
ans = 1
n = 2
while n <= x:
ans *= n
n += 1
return ans

or

fact = lambda x: x * fact(x - 1) if x > 1 else 1

or

from math import factorial

Which is the better factorial function?

def fact(x):
ans = 1
n = 2
while n <= x:
ans *= n
n += 1
return ans

or

fact = lambda x: x * fact(x - 1) if x > 1 else 1

or

from math import factorial

@Mathematics

Answer 1

where did you ask about delta squared?

Answer 2

i found it , you asked
agdgdgdgwngo 4 Good Answer
(define (square) (lambda (x) (* x x)))

Answer 3

this one is better
def fact(x):
ans = 1
n = 2
while n <= x:
ans *= n
n += 1
return ans
because other one does recursion and recursion requires more memory