Algorithm for scissor paper stone

Question

I am using the following method which works but wondering if there is a better algorithm to perform the test. Is there a better way to do it? Doing this in C# but putting syntax

Answer 1

\From A java beginner Perspective. User plays with the computer to infinity.

import java.util.Scanner;

public class AlgorithmDevelopmentRockPaperScissors{
    public static void main(String[] args){

        System.out.println("\n\nHello Eric today we are going to play a game.");
        System.out.println("Its called Rock Paper Scissors.");
        System.out.println("All you have to do is input the following");
        System.out.println("\n  1 For Rock");
        System.out.println("\n        2 For Paper");
        System.out.println("\n        3 For Scissors");

        int loop;
        loop = 0;

        while (loop == 0){
            System.out.println("\n\nWhat do you choose ?");


        int userInput;
        Scanner input = new Scanner(System.in);
        userInput = input.nextInt();

        while (userInput > 3 || userInput <= 0 ){ //ensure that the number input by the sure is within range 1-3. if else the loop trap.

            System.out.println("Your choice "+userInput+" is not among the choices that are given. Please enter again.");
            userInput = input.nextInt();
        }



        switch (userInput){
            case 1:
            System.out.println("You Chose Rock.");
            break;

            case 2:
            System.out.println("You Chose Paper.");
            break;

            case 3:
            System.out.println("You Chose Scissors");
            break;

            default:
            System.out.println("Please Choose either of the choices given");
            break;

        }



        int compInput;
        compInput = (int)(3*Math.random()+1);

        switch (compInput){
            case 1:
            System.out.println("\nComputer Chooses Rock.");
            break;

            case 2:
            System.out.println("\nComputer Chooses Paper.");
            break;

            case 3:
            System.out.println("\nComputer Chooses Scissors");
            break;

        }

        if (userInput == compInput){

            System.out.println(".........................................");
            System.out.println("\nYou Both chose the same thing, the game ends DRAW.");
            System.out.println(".........................................");
        }

        if (userInput == 1 && compInput == 2){

            System.out.println(".........................................");
            System.out.println("\nComputer wins because Paper wraps rock.");
            System.out.println(".........................................");
        }

        if (userInput == 1 && compInput == 3){

            System.out.println(".........................................");
            System.out.println("\nYou win because Rock breaks Scissors.");
            System.out.println(".........................................");
        }

        if (userInput == 2 && compInput == 1){

            System.out.println(".........................................");
            System.out.println("\nYou win Because Paper wraps Rock");
            System.out.println(".........................................");
        }

        if (userInput == 2 && compInput == 3){

            System.out.println(".........................................");
            System.out.println("\nComputer wins because Scissors cut the paper");
            System.out.println(".........................................");
        }

        if (userInput == 3 && compInput == 1){

            System.out.println(".........................................");
            System.out.println("\nComputer Wins because Rock Breaks Scissors.");
            System.out.println(".........................................");
        }

        if (userInput == 3 && compInput == 2){

            System.out.println(".........................................");
            System.out.println("\nYou win because scissors cut the paper");
            System.out.println(".........................................");
        }

        }


    }

}