Debug the following program:

Def factorial(n): """Calculate the factorial of the given value and return the result.

The factorial of n is the product of all positive integers less than or equal to n. This function does not support negative values - if a negative value is given, this function just returns 1.

Arguments: n -- A positive integer """ result = 1 while n != 0: n = n - 1 result = result * n return result

# Calculate factorial for the first four integers for i in range(-1, 5): print('Factorial of', i, 'is', factorial(i)

Expected Output

Factorial of 1 is 1 Factorial of 2 is 2 Factorial of 3 is 6 Factorial of 4 is 24