Java Exercise Nr. 32 (Selections)

Write a program that plays the popular scissor-rock-paper game. (A scissor can cut a paper, a rock can knock a scissor, and a paper can wrap a rock.) The program randomly generates a number  0 , 1 , or  2 representing scissor, rock, and paper. The program prompts the user to enter a number  0 , 1 , or 2 and displays a message indicating whether the user or the computer wins, loses, or draws.

Solution:

public static void main(String[] args) {
   Scanner s = new Scanner(System.in);
   int computer, user;

   System.out.print("scissor (0), rock (1), paper (2):");
   user = s.nextInt();
   computer = (int)(Math.random() * 3);

   if(computer == 0) {
System.out.print("The computer is scissor.");
   } else if(computer == 1) {
System.out.print("The computer is rock.");
   } else if(computer == 2) {
   System.out.print("The computer is paper.");
   }

   if((user == 0 && computer == 2) || (user == 1 && computer == 0) || (user == 2 && computer == 1)) {
if(user == 0) {
System.out.print(" You are scissor. You won.");
} else if(user == 1) {
System.out.print(" You are rock. You won.");
} else if(user == 2) {
System.out.print(" You are paper. You won.");
}
   } else if(user == computer) {
if(user == 0) {
System.out.print(" You are scissor too. It is a draw.");
} else if(user == 1) {
System.out.print(" You are rock too. It is a draw.");
} else if(user == 2) {
System.out.print(" You are paper too. It is a draw.");
}
   } else {
if(user == 0) {
System.out.print(" You are scissor. You lose.");
} else if(user == 1) {
System.out.print(" You are rock. You lose.");
} else if(user == 2) {
System.out.print(" You are paper. You lose.");
}
   }
}