import java.util.Scanner;public class Factorial { method usi.pdf
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This document presents a Java program that calculates the factorial of a number using recursion. It prompts the user to enter a number and then computes the factorial through a recursive method. The program outputs the result to the console.
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![import java.util.Scanner;
public class Factorial
{
// method using recursion to find factorial of number
public static int factorial(int input)
{
// factorial of 0 is 1
if (input == 0)
{
return 1;
}
// else recursively call the function
else
{
return input * factorial(input - 1);
}
}
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
int input;
System.out.println("Enter a number: ");
input = scan.nextInt();
// store result in answer
int answer = factorial(input);
System.out.println("The factorial of " + input + " is " + answer);
}
}
Solution
import java.util.Scanner;
public class Factorial
{](https://image.slidesharecdn.com/importjava-230412040313-fadbd7fe/85/import-java-util-Scanner-public-class-Factorial-method-usi-pdf-1-320.jpg)
![// method using recursion to find factorial of number
public static int factorial(int input)
{
// factorial of 0 is 1
if (input == 0)
{
return 1;
}
// else recursively call the function
else
{
return input * factorial(input - 1);
}
}
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
int input;
System.out.println("Enter a number: ");
input = scan.nextInt();
// store result in answer
int answer = factorial(input);
System.out.println("The factorial of " + input + " is " + answer);
}
}](https://image.slidesharecdn.com/importjava-230412040313-fadbd7fe/85/import-java-util-Scanner-public-class-Factorial-method-usi-pdf-2-320.jpg)
import java.util.Scanner;public class Factorial { method usi.pdf
- 1. import java.util.Scanner; public class Factorial { // method using recursion to find factorial of number public static int factorial(int input) { // factorial of 0 is 1 if (input == 0) { return 1; } // else recursively call the function else { return input * factorial(input - 1); } } public static void main(String[] args) { Scanner scan = new Scanner(System.in); int input; System.out.println("Enter a number: "); input = scan.nextInt(); // store result in answer int answer = factorial(input); System.out.println("The factorial of " + input + " is " + answer); } } Solution import java.util.Scanner; public class Factorial {
- 2. // method using recursion to find factorial of number public static int factorial(int input) { // factorial of 0 is 1 if (input == 0) { return 1; } // else recursively call the function else { return input * factorial(input - 1); } } public static void main(String[] args) { Scanner scan = new Scanner(System.in); int input; System.out.println("Enter a number: "); input = scan.nextInt(); // store result in answer int answer = factorial(input); System.out.println("The factorial of " + input + " is " + answer); } }