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import java.util.*;
/**
* A strategy game where all players have perfect information and no theme
* or narrative around gameplay.
*/
public abstract class AbstractStrategyGame {
/**
* Constructs and returns a String describing how to play the game. Should include
* any relevant details on how to interpret the game state as returned by toString(),
* how to make moves, the game end condition, and how to win.
*/
public abstract String instructions();
/**
* Constructs and returns a String representation of the current game state.
* This representation should contain all information that should be known to
* players at any point in the game, including board state (if any) and scores (if any).
*/
public abstract String toString();
/**
* Returns true if the game has ended, and false otherwise.
*/
public boolean isGameOver() {
return getWinner() != -1;
}
/**
* Returns the index of the player who has won the game,
* or -1 if the game is not over.
*/
public abstract int getWinner();
/**
* Returns the index of the player who will take the next turn.
* If the game is over, returns -1.
*/
public abstract int getNextPlayer();
/**
* Takes input from the parameter to specify the move the player
* with the next turn wishes to make, then executes that move.
* If any part of the move is illegal, throws an IllegalArgumentException.
*/
public abstract void makeMove(Scanner input);
}
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