1  // Question:
 2  // Implement a simple Nim game where two players take turns removing 1 to 3 stones from a pile.
 3  // The player who removes the last stone wins the game.
 4  // Find if you can win the game if number of stones is 0
 5  
 6  import java.util.Scanner;
 7  
 8  public class assignment_28 {
 9    public static boolean canWin(int n) {
10      return n % 4 != 0;
11    }
12      public static void main(String[] args) {
13          Scanner scanner = new Scanner(System.in);
14          int stones;
15          
16          // Initialize the game with a pile of stones
17          System.out.print("Enter the total number of stones: ");
18          stones = scanner.nextInt(); // Read the total number of stones from user input
19          System.out.println(canWin(stones));
20          
21          while (stones > 0) { // Continue the game until all stones are removed
22              // Player's turn
23              stones = playerMove(scanner, stones); // Player makes a move
24              if (stones == 0) { // Check if the player has won
25                  System.out.println("You win!");
26                  break; // End the game if the player wins
27              }
28              
29              // Friend's turn (replace with AI if needed)
30              stones = playerMove(scanner, stones); // Friend makes a move
31              if (stones == 0) { // Check if the friend has won
32                  System.out.println("Your friend wins!");
33                  break; // End the game if the friend wins
34              }
35          }
36          scanner.close(); // Close the scanner to prevent resource leak
37      }
38      
39      // Method for handling a player's move
40      private static int playerMove(Scanner scanner, int stones) {
41          int move;
42          do {
43              System.out.print("Enter number of stones to remove (1-3): ");
44              move = scanner.nextInt(); // Read player's move
45          } while (move < 1 || move > 3 || move > stones); // Ensure move is valid
46          
47          stones -= move; // Reduce the number of stones
48          System.out.println("Stones left: " + stones); // Display remaining stones
49          return stones; // Return updated stone count
50      }
51  }