import java.util.*; import java.math.BigInteger; public class Main { public static void main(String[] args) { Scanner cin = new Scanner(System.in); int k=Integer.parseInt(cin.nextLine()); while(k-->0) { int n=Integer.parseInt(cin.nextLine()); BigInteger s=new BigInteger("1"); fo...
We've actually strayed a bit away from the original definition here - we're counting from 1 to n, while the definition of factorial was from the given number down to 1. When you put it down on paper, though, mathematically: 1∗2∗3∗4...∗n=n∗(n−1)∗(n−2)∗...
However, there is a 'trick' to get around this: setting the value of the zero-factorial to a number by definition. And, hence, we arrive at the convention: 0! = 1. A small disclaimer is needed here since, in maths, things are never as easy as "choose a number and roll with it...
In area A the Java source code for the recursive algorithm used to find the factorial is displayed. As the algorithm executes the current line of execution is highlighted. This animation shows pictorially how this algorithm finds the factorial of a given number. Each time that a recursive call...
5. What is the factorial of a negative number? A. Always 0 B. Always Undefined C. Positive Integer D. Negative Integer Show Answer Print Page Submit Review AdvertisementsTOP TUTORIALS Python Tutorial Java Tutorial C++ Tutorial C Programming Tutorial C# Tutorial PHP Tutorial R Tutorial HTML...
C++ Code : #include<iostream>// Including input-output stream header fileusing namespace std;// Using the standard namespace// Function to calculate factorial recursivelylonglongfactorial(intnum){if(num==0){// If the number is 0return1;// Return 1 because 0! is 1 by definition}else{//...