package emmett.playground;

import java.util.Scanner;

// Very picky but, this is not a good name for a class :)
// https://www.geeksforgeeks.org/java-naming-conventions/
public class TP2_1 {

	public static Scanner clavier = new Scanner(System.in);

	public static void main(String args[]) {
		// Print to the terminal first, ask the user for an input
		System.out.print("Entrez un nombre : ");
		// After the above is printed, wait for the user to enter an int
		int nombreSaisi = clavier.nextInt();
		System.out.println("La factorielle de " + nombreSaisi + " est " + factNombre2(nombreSaisi));
	}

	public static int factNombre(int element) {
		int multiplicateur = 1; // * google ma aider, pas sure pourquoi ca fonctionne
		int nombreEntier = element;
		// structure de decision
		for (int i = 1; i <= nombreEntier; i++) {
			multiplicateur = multiplicateur * i;
		}
		return element;
	}

	public static int factNombre2(int nombreEntre) {

		// Start the factorielle/multiplicateur at one because its just easier to multiply by 1
		// then continue through the loop
		int factorielle = 1;
		// For every iteration of the loop,
		//	-Take the numer the user entered in the keyboard
		//  -Subtract from it, the number of times you've been in the loop already
		//  -Multiply by the previous result1
		for (int i = 0; i < nombreEntre; i++) {
			factorielle = (nombreEntre - i) * factorielle;
		}
		return factorielle;
	}
}