Question

DONE IN PYTHON

The factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n.
For example, 5 ! = 5 × 4 × 3 × 2 × 1 = 120.
The value of 0! is 1.

Write a program, with comments, to do the following: 20 points
Ask the user to enter a positive integer n. between 1 and 20 ; You may assume the user will enter a valid input.
Calculate the factorial of all numbers j (1 < j < n) from 1 – n (inclusive).
For each j, print the value of j and j! with a suitable message and append each j! to a list called factorial list.
Print the final factorial list with a suitable message.
Write function called factorial that takes the entered number n and returns the factorial value, also write another function to print the factorial_list?

Answer 1

def fact(n):
    if(n<=1):
        return 1
    else:
        res = 1
        for i in range(1,n+1):
            res *= i
        return res

def printList(factorial_list):
    for x in range(len(factorial_list)):
        print("Factorial of",(x+1),"is",factorial_list[x])

def main():
    n = int(input("Enter value for n: "))
    factorial_list = []
    for i in range(1,n):
        factorial_list.append(fact(i))
    printList(factorial_list)

main()