Untitled

package javagame;

import java.util.Scanner;

import static java.lang.Math.random;

public class JavaGame {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String[] choices = new String[3];
        choices[0] = "paper";
        choices[1] = "scissors";
        choices[2] = "rock";

        boolean again = false;

        // Arrays to store coin rewards
        int[] playerCoins = new int[1];
        int[] computerCoins = new int[1];

        do {
            // random index (for the computer)
            int rand = (int) (random() * 3);

            System.out.print("Enter your choice (paper/scissors/rock): ");
            String input = in.nextLine();
            System.out.printf("The computer's choice is: %s\n", choices[rand]);
            int idx = rand;
            for (int i = 0; i < 3; i++) {
                if (i == rand) continue;
                if (compareStrings(input, choices[i])) idx = i;
            }

            // Determine the outcome of the game
            if (rand - idx == -1 || rand - idx == 2) { 
                System.out.println("The player wins");

                // Generate 2 random numbers as the coin rewards
                int playerReward = (int) (Math.random() * 10);
                int computerReward = (int) (Math.random() * 5); // computer gets a smaller reward for losing

                // Update coin totals
                playerCoins[0] += playerReward;
                computerCoins[0] += computerReward;

                System.out.printf("Player gains %d coins, total: %d\n", playerReward, playerCoins[0]);
                System.out.printf("Computer gains %d coins, total: %d\n", computerReward, computerCoins[0]);
            } else if (rand == idx) {
                System.out.println("Tie");
                again = true;
            } else {
                System.out.println("The Computer wins");

                // Generate 2 random numbers as the coin rewards
                int playerReward = (int) (Math.random() * 5); // player gets a smaller reward for losing
                int computerReward = (int) (Math.random() * 10);

                // Update coin totals
                playerCoins[0] += playerReward;
                computerCoins[0] += computerReward;

                System.out.printf("Player gains %d coins, total: %d\n", playerReward, playerCoins[0]);
                System.out.printf("Computer gains %d coins, total: %d\n", computerReward, computerCoins[0]);

                System.out.println("Oh no! Try again.");
            }
        } while (again);
    }

    public static boolean compareStrings(String a, String b) {
        int sz1 = a.length(), sz2 = b.length();
        if (sz2 != sz1) return false;
        for (int i = 0; i < sz1; i++) {
            if (a.charAt(i) != b.charAt(i)) return false;
        }
        return true;
    }
}