Java 16.2 Practice Math Class. Can someone help me solve that please ? I have no idea how to do it.

Question

For your math class you need a program to calculate the factorial of a number.
You're given a program which takes a number as input.

Task
Complete the program to calculate the factorial of the given number and output it.

Sample input
6

Sample output
720

Explanation
The factorial of a number is equal to the product of all numbers less than or equal to the given number.
The factorial of 6 will be 6*5*4*3*2*1 = 720.

Hint
Use while loop to calculate the factorial of the number.

Answer 1

1. Declare a variable (int fact) and initialize it with 1.

2. Read a number from input whose factorial is to be found. Store it in a variable (int num).

3. Set the while loop to the condition (i <= num) where initial value of i = 1.

4. Inside the while loop, multiply the variable fact and variable i, and store the result in variable fact. Increment the loop variable i by 1 (i++).

5. Print the factorial.

Ex:

int fact = 1;
int i = 1;

while(i <= num){
fact *= i;

i++;
}

Answer 2

import java.util.Scanner;

public class Main
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int number = scanner.nextInt();
int fact = 1;
//your code goes here
while(number>0){
fact *= number --;
}
System.out.println(fact);

}
}

Answer 3

Thank you, it works !

int number = scanner.nextInt();
int fact = 1;

int i = 1;

while(i <= number){
fact*= i;
i++;
}
System.out.println(fact);

Answer 4

what is the answer it is not working.

Answer 5

The answer

import java.util.Scanner;

public class Main
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
int number = scanner.nextInt();
int fact = 1;
//your code goes here
while( number >0){
fact *= number --;

}
System.out.println(fact);

}
}

Answer 6

You are making a program for a chess tournament, that needs to calculate the points earned by a player.

A win is worth 1 point, while a tie is worth 0.5 points. The given program declares two variables: wins and ties with the corresponding values.

Create a program to calculate and output the points earned by the player.