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import java.util.Scanner; public class Main { public static int gridArray1[][] = null; public static int gridArray2[][] = null; public static boolean playerTurn = true; public static int count = 0; public static void setGridDimensions(int x_max, int y_max) { Main.gridArray1 = new int[x_max][y_max]; Main.gridArray2 = new int[x_max][y_max]; for (int i = 0; i < x_max; i++) { for (int j = 0; j < y_max; j++) { gridArray1[i][j] = -1; gridArray2[i][j] = -1; } } } static void placeShip(int starting_x, int starting_y, int length, int direction) { count++; int ships[] = new int[10]; int battleshipArrayPositions1[] = new int[4]; int cruiserArrayPositions1[] = new int[3]; int submarineArrayPositions1[] = new int[3]; int destroyerArrayPositions1[] = new int[2]; int carrierArrayPositions2[] = new int[5]; int battleshipArrayPositions2[] = new int[4]; int cruiserArrayPositions2[] = new int[3]; int submarineArrayPositions2[] = new int[3]; int destroyerArrayPositions2[] = new int[2]; if (playerTurn) { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) { Main.gridArray1[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray1[starting_x][i] = 0; } } } else { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) { Main.gridArray2[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray2[starting_x][i] = 0; } } } } boolean isConflictingShipPlacement(int starting_x, int starting_y, int length, int direction) { return false; } static int shoot(int x, int y) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (Main.gridArray2[i][j] == 0) { return 0; } } } } else { } return 0; } boolean hasBeenAttempted(int x, int y) { return false; } static void displayGrid(boolean showShips) { int count = 0; System.out.print(\" 0 1 2 3 4 5 6 7 8 9\"); if (showShips) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(\"\ \" + count + \" \"); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print(\"- \"); } else if (Main.gridArray1[i][j] == 0) { System.out.print(\"@ \"); } else if (Main.gridArray1[i][j] == 1) { System.out.print(\"+ \"); } else { System.out.print(\"X \"); } } } } else { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(\"\ \" + count + \" \"); count++; } if (Main.gridArray2[i][j] == -1) { System.out.print(\"- \"); } else if (Main.gridArray2[i][j] == 0) { System.out.print(\"@ \"); } else if (Main.gridArray2[i][j] == 1) { System.out.print(\"+ \"); } else { System.out.print(\"X \"); } } } } } else { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(\"\ \" + count + \" \"); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print(\"- \"); } else if (Main.gridArray1[i][j] == 0) { System.out.print(\"- \"); } el.

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import java.util.Scanner; public class Main { public static int gridArray1[][] = null; public static int gridArray2[][] = null; public static boolean playerTurn = true; public static int count = 0; public static void setGridDimensions(int x_max, int y_max) { Main.gridArray1 = new int[x_max][y_max]; Main.gridArray2 = new int[x_max][y_max]; for (int i = 0; i < x_max; i++) { for (int j = 0; j < y_max; j++) { gridArray1[i][j] = -1; gridArray2[i][j] = -1; } } } static void placeShip(int starting_x, int starting_y, int length, int direction) { count++; int ships[] = new int[10]; int battleshipArrayPositions1[] = new int[4]; int cruiserArrayPositions1[] = new int[3]; int submarineArrayPositions1[] = new int[3]; int destroyerArrayPositions1[] = new int[2]; int carrierArrayPositions2[] = new int[5]; int battleshipArrayPositions2[] = new int[4]; int cruiserArrayPositions2[] = new int[3]; int submarineArrayPositions2[] = new int[3]; int destroyerArrayPositions2[] = new int[2]; if (playerTurn) { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) {
Main.gridArray1[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray1[starting_x][i] = 0; } } } else { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) { Main.gridArray2[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray2[starting_x][i] = 0; } } } } boolean isConflictingShipPlacement(int starting_x, int starting_y, int length, int direction) { return false; } static int shoot(int x, int y) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (Main.gridArray2[i][j] == 0) { return 0; } } } } else { } return 0; } boolean hasBeenAttempted(int x, int y) {
return false; } static void displayGrid(boolean showShips) { int count = 0; System.out.print(" 0 1 2 3 4 5 6 7 8 9"); if (showShips) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 0) { System.out.print("@ "); } else if (Main.gridArray1[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } else { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray2[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 0) { System.out.print("@ "); } else if (Main.gridArray2[i][j] == 1) {
System.out.print("+ "); } else { System.out.print("X "); } } } } } else { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 0) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } else { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray2[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 0) {
System.out.print("- "); } else if (Main.gridArray2[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } } System.out.println(""); } public static void main(String[] args) { int carrierLength = 5, battleshipLength = 4, cruiserLength = 3, submarineLength = 3, destroyerLength = 2, countPlayer1 = 5, countPlayer2 = 5, x, y, carrierDirectionNumber, battleshipDirectionNumber, cruiserDirectionNumber, submarineDirectionNumber, destroyerDirectionNumber, shotReturn; String carrier, battleship, cruiser, submarine, destroyer, carrierDirection, battleshipDirection, cruiserDirection, submarineDirection, destroyerDirection, shot; setGridDimensions(10, 10); Scanner scan = new Scanner(System.in); for (int i = 0; i <= 1; i++) { if (playerTurn) { System.out.println("PLAYER 1 TURN"); displayGrid(true); System.out.println("Place your Carrier (length 5): "); carrier = scan.nextLine(); String carrierArray[] = carrier.split(","); x = Integer.valueOf(carrierArray[0]); y = Integer.valueOf(carrierArray[1]); System.out.println("Choose direction (d/r): "); carrierDirection = scan.nextLine(); if (carrierDirection.equals("d")) {
carrierDirection = "0"; } else { carrierDirection = "1"; } carrierDirectionNumber = Integer.valueOf(carrierDirection); placeShip(x, y, carrierLength, carrierDirectionNumber); displayGrid(true); System.out.println("Place your Battleship (length 4): "); battleship = scan.nextLine(); String battleshipArray[] = battleship.split(","); x = Integer.valueOf(battleshipArray[0]); y = Integer.valueOf(battleshipArray[1]); System.out.println("Choose direction (d/r): "); battleshipDirection = scan.nextLine(); if (battleshipDirection.equals("d")) { battleshipDirection = "0"; } else { battleshipDirection = "1"; } battleshipDirectionNumber = Integer.valueOf(battleshipDirection); placeShip(x, y, battleshipLength, battleshipDirectionNumber); displayGrid(true); System.out.println("Place your Cruiser (length 3): "); cruiser = scan.nextLine(); String cruiserArray[] = cruiser.split(","); x = Integer.valueOf(cruiserArray[0]); y = Integer.valueOf(cruiserArray[1]); System.out.println("Choose direction (d/r): "); cruiserDirection = scan.nextLine(); if (cruiserDirection.equals("d")) { cruiserDirection = "0"; } else { cruiserDirection = "1"; } cruiserDirectionNumber = Integer.valueOf(cruiserDirection); placeShip(x, y, cruiserLength, cruiserDirectionNumber);
displayGrid(true); System.out.println("Place your Submarine (length 3): "); submarine = scan.nextLine(); String submarineArray[] = submarine.split(","); x = Integer.valueOf(submarineArray[0]); y = Integer.valueOf(submarineArray[1]); System.out.println("Choose direction (d/r): "); submarineDirection = scan.nextLine(); if (submarineDirection.equals("d")) { submarineDirection = "0"; } else { submarineDirection = "1"; } submarineDirectionNumber = Integer.valueOf(submarineDirection); placeShip(x, y, submarineLength, submarineDirectionNumber); displayGrid(true); System.out.println("Place your Destroyer (length 2): "); destroyer = scan.nextLine(); String destroyerArray[] = destroyer.split(","); x = Integer.valueOf(destroyerArray[0]); y = Integer.valueOf(destroyerArray[1]); System.out.println("Choose direction (d/r): "); destroyerDirection = scan.nextLine(); if (destroyerDirection.equals("d")) { destroyerDirection = "0"; } else { destroyerDirection = "1"; } destroyerDirectionNumber = Integer.valueOf(destroyerDirection); placeShip(x, y, destroyerLength, destroyerDirectionNumber); displayGrid(true); playerTurn = false; } else { System.out.println("PLAYER 2 TURN"); displayGrid(true); System.out.println("Place your Carrier (length 5): ");
carrier = scan.nextLine(); String carrierArray[] = carrier.split(","); x = Integer.valueOf(carrierArray[0]); y = Integer.valueOf(carrierArray[1]); System.out.println("Choose direction (d/r): "); carrierDirection = scan.nextLine(); if (carrierDirection.equals("d")) { carrierDirection = "0"; } else { carrierDirection = "1"; } carrierDirectionNumber = Integer.valueOf(carrierDirection); placeShip(x, y, carrierLength, carrierDirectionNumber); displayGrid(true); System.out.println("Place your Battleship (length 4): "); battleship = scan.nextLine(); String battleshipArray[] = battleship.split(","); x = Integer.valueOf(battleshipArray[0]); y = Integer.valueOf(battleshipArray[1]); System.out.println("Choose direction (d/r): "); battleshipDirection = scan.nextLine(); if (battleshipDirection.equals("d")) { battleshipDirection = "0"; } else { battleshipDirection = "1"; } battleshipDirectionNumber = Integer.valueOf(battleshipDirection); placeShip(x, y, battleshipLength, battleshipDirectionNumber); displayGrid(true); System.out.println("Place your Cruiser (length 3): "); cruiser = scan.nextLine(); String cruiserArray[] = cruiser.split(","); x = Integer.valueOf(cruiserArray[0]); y = Integer.valueOf(cruiserArray[1]); System.out.println("Choose direction (d/r): "); cruiserDirection = scan.nextLine();
if (cruiserDirection.equals("d")) { cruiserDirection = "0"; } else { cruiserDirection = "1"; } cruiserDirectionNumber = Integer.valueOf(cruiserDirection); placeShip(x, y, cruiserLength, cruiserDirectionNumber); displayGrid(true); System.out.println("Place your Submarine (length 3): "); submarine = scan.nextLine(); String submarineArray[] = submarine.split(","); x = Integer.valueOf(submarineArray[0]); y = Integer.valueOf(submarineArray[1]); System.out.println("Choose direction (d/r): "); submarineDirection = scan.nextLine(); if (submarineDirection.equals("d")) { submarineDirection = "0"; } else { submarineDirection = "1"; } submarineDirectionNumber = Integer.valueOf(submarineDirection); placeShip(x, y, submarineLength, submarineDirectionNumber); displayGrid(true); System.out.println("Place your Destroyer (length 2): "); destroyer = scan.nextLine(); String destroyerArray[] = destroyer.split(","); x = Integer.valueOf(destroyerArray[0]); y = Integer.valueOf(destroyerArray[1]); System.out.println("Choose direction (d/r): "); destroyerDirection = scan.nextLine(); if (destroyerDirection.equals("d")) { destroyerDirection = "0"; } else { destroyerDirection = "1"; } destroyerDirectionNumber = Integer.valueOf(destroyerDirection);
placeShip(x, y, destroyerLength, destroyerDirectionNumber); displayGrid(true); } } while (countPlayer1 != 0 || countPlayer2 != 0) { if (playerTurn) { System.out.println("PLAYER 1 TURN"); System.out.println("Take a shot: "); shot = scan.nextLine(); String shotArray[] = shot.split(","); x = Integer.valueOf(shotArray[0]); y = Integer.valueOf(shotArray[1]); shotReturn = shoot(x, y); if (shotReturn == -1) { System.out.println("Miss!"); } else if (shotReturn == 0) { System.out.println("Hit!"); countPlayer2--; } else { System.out.println("Ship sank!"); } playerTurn = false; } else { System.out.println("PLAYER 2 TURN"); System.out.println("Take a shot: "); shot = scan.nextLine(); String shotArray[] = shot.split(","); x = Integer.valueOf(shotArray[0]); y = Integer.valueOf(shotArray[1]); shotReturn = shoot(x, y); if (shotReturn == -1) { System.out.println("Miss!"); } else if (shotReturn == 0) { System.out.println("Hit!"); countPlayer1--; } else {
System.out.println("Ship sank!"); } playerTurn = true; } } } } Solution import java.util.Scanner; public class Main { public static int gridArray1[][] = null; public static int gridArray2[][] = null; public static boolean playerTurn = true; public static int count = 0; public static void setGridDimensions(int x_max, int y_max) { Main.gridArray1 = new int[x_max][y_max]; Main.gridArray2 = new int[x_max][y_max]; for (int i = 0; i < x_max; i++) { for (int j = 0; j < y_max; j++) { gridArray1[i][j] = -1; gridArray2[i][j] = -1; } } } static void placeShip(int starting_x, int starting_y, int length, int direction) { count++; int ships[] = new int[10]; int battleshipArrayPositions1[] = new int[4]; int cruiserArrayPositions1[] = new int[3]; int submarineArrayPositions1[] = new int[3]; int destroyerArrayPositions1[] = new int[2];
int carrierArrayPositions2[] = new int[5]; int battleshipArrayPositions2[] = new int[4]; int cruiserArrayPositions2[] = new int[3]; int submarineArrayPositions2[] = new int[3]; int destroyerArrayPositions2[] = new int[2]; if (playerTurn) { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) { Main.gridArray1[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray1[starting_x][i] = 0; } } } else { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) { Main.gridArray2[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray2[starting_x][i] = 0; } } } } boolean isConflictingShipPlacement(int starting_x, int starting_y, int length, int direction) { return false; } static int shoot(int x, int y) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (Main.gridArray2[i][j] == 0) {
return 0; } } } } else { } return 0; } boolean hasBeenAttempted(int x, int y) { return false; } static void displayGrid(boolean showShips) { int count = 0; System.out.print(" 0 1 2 3 4 5 6 7 8 9"); if (showShips) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 0) { System.out.print("@ "); } else if (Main.gridArray1[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } else { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) {
if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray2[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 0) { System.out.print("@ "); } else if (Main.gridArray2[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } } else { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 0) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } else {
for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray2[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 0) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } } System.out.println(""); } public static void main(String[] args) { int carrierLength = 5, battleshipLength = 4, cruiserLength = 3, submarineLength = 3, destroyerLength = 2, countPlayer1 = 5, countPlayer2 = 5, x, y, carrierDirectionNumber, battleshipDirectionNumber, cruiserDirectionNumber, submarineDirectionNumber, destroyerDirectionNumber, shotReturn; String carrier, battleship, cruiser, submarine, destroyer, carrierDirection, battleshipDirection, cruiserDirection, submarineDirection, destroyerDirection, shot; setGridDimensions(10, 10); Scanner scan = new Scanner(System.in); for (int i = 0; i <= 1; i++) { if (playerTurn) { System.out.println("PLAYER 1 TURN");
displayGrid(true); System.out.println("Place your Carrier (length 5): "); carrier = scan.nextLine(); String carrierArray[] = carrier.split(","); x = Integer.valueOf(carrierArray[0]); y = Integer.valueOf(carrierArray[1]); System.out.println("Choose direction (d/r): "); carrierDirection = scan.nextLine(); if (carrierDirection.equals("d")) { carrierDirection = "0"; } else { carrierDirection = "1"; } carrierDirectionNumber = Integer.valueOf(carrierDirection); placeShip(x, y, carrierLength, carrierDirectionNumber); displayGrid(true); System.out.println("Place your Battleship (length 4): "); battleship = scan.nextLine(); String battleshipArray[] = battleship.split(","); x = Integer.valueOf(battleshipArray[0]); y = Integer.valueOf(battleshipArray[1]); System.out.println("Choose direction (d/r): "); battleshipDirection = scan.nextLine(); if (battleshipDirection.equals("d")) { battleshipDirection = "0"; } else { battleshipDirection = "1"; } battleshipDirectionNumber = Integer.valueOf(battleshipDirection); placeShip(x, y, battleshipLength, battleshipDirectionNumber); displayGrid(true); System.out.println("Place your Cruiser (length 3): "); cruiser = scan.nextLine(); String cruiserArray[] = cruiser.split(","); x = Integer.valueOf(cruiserArray[0]); y = Integer.valueOf(cruiserArray[1]);
System.out.println("Choose direction (d/r): "); cruiserDirection = scan.nextLine(); if (cruiserDirection.equals("d")) { cruiserDirection = "0"; } else { cruiserDirection = "1"; } cruiserDirectionNumber = Integer.valueOf(cruiserDirection); placeShip(x, y, cruiserLength, cruiserDirectionNumber); displayGrid(true); System.out.println("Place your Submarine (length 3): "); submarine = scan.nextLine(); String submarineArray[] = submarine.split(","); x = Integer.valueOf(submarineArray[0]); y = Integer.valueOf(submarineArray[1]); System.out.println("Choose direction (d/r): "); submarineDirection = scan.nextLine(); if (submarineDirection.equals("d")) { submarineDirection = "0"; } else { submarineDirection = "1"; } submarineDirectionNumber = Integer.valueOf(submarineDirection); placeShip(x, y, submarineLength, submarineDirectionNumber); displayGrid(true); System.out.println("Place your Destroyer (length 2): "); destroyer = scan.nextLine(); String destroyerArray[] = destroyer.split(","); x = Integer.valueOf(destroyerArray[0]); y = Integer.valueOf(destroyerArray[1]); System.out.println("Choose direction (d/r): "); destroyerDirection = scan.nextLine(); if (destroyerDirection.equals("d")) { destroyerDirection = "0"; } else { destroyerDirection = "1";
} destroyerDirectionNumber = Integer.valueOf(destroyerDirection); placeShip(x, y, destroyerLength, destroyerDirectionNumber); displayGrid(true); playerTurn = false; } else { System.out.println("PLAYER 2 TURN"); displayGrid(true); System.out.println("Place your Carrier (length 5): "); carrier = scan.nextLine(); String carrierArray[] = carrier.split(","); x = Integer.valueOf(carrierArray[0]); y = Integer.valueOf(carrierArray[1]); System.out.println("Choose direction (d/r): "); carrierDirection = scan.nextLine(); if (carrierDirection.equals("d")) { carrierDirection = "0"; } else { carrierDirection = "1"; } carrierDirectionNumber = Integer.valueOf(carrierDirection); placeShip(x, y, carrierLength, carrierDirectionNumber); displayGrid(true); System.out.println("Place your Battleship (length 4): "); battleship = scan.nextLine(); String battleshipArray[] = battleship.split(","); x = Integer.valueOf(battleshipArray[0]); y = Integer.valueOf(battleshipArray[1]); System.out.println("Choose direction (d/r): "); battleshipDirection = scan.nextLine(); if (battleshipDirection.equals("d")) { battleshipDirection = "0"; } else { battleshipDirection = "1"; } battleshipDirectionNumber = Integer.valueOf(battleshipDirection);
placeShip(x, y, battleshipLength, battleshipDirectionNumber); displayGrid(true); System.out.println("Place your Cruiser (length 3): "); cruiser = scan.nextLine(); String cruiserArray[] = cruiser.split(","); x = Integer.valueOf(cruiserArray[0]); y = Integer.valueOf(cruiserArray[1]); System.out.println("Choose direction (d/r): "); cruiserDirection = scan.nextLine(); if (cruiserDirection.equals("d")) { cruiserDirection = "0"; } else { cruiserDirection = "1"; } cruiserDirectionNumber = Integer.valueOf(cruiserDirection); placeShip(x, y, cruiserLength, cruiserDirectionNumber); displayGrid(true); System.out.println("Place your Submarine (length 3): "); submarine = scan.nextLine(); String submarineArray[] = submarine.split(","); x = Integer.valueOf(submarineArray[0]); y = Integer.valueOf(submarineArray[1]); System.out.println("Choose direction (d/r): "); submarineDirection = scan.nextLine(); if (submarineDirection.equals("d")) { submarineDirection = "0"; } else { submarineDirection = "1"; } submarineDirectionNumber = Integer.valueOf(submarineDirection); placeShip(x, y, submarineLength, submarineDirectionNumber); displayGrid(true); System.out.println("Place your Destroyer (length 2): "); destroyer = scan.nextLine(); String destroyerArray[] = destroyer.split(","); x = Integer.valueOf(destroyerArray[0]);
y = Integer.valueOf(destroyerArray[1]); System.out.println("Choose direction (d/r): "); destroyerDirection = scan.nextLine(); if (destroyerDirection.equals("d")) { destroyerDirection = "0"; } else { destroyerDirection = "1"; } destroyerDirectionNumber = Integer.valueOf(destroyerDirection); placeShip(x, y, destroyerLength, destroyerDirectionNumber); displayGrid(true); } } while (countPlayer1 != 0 || countPlayer2 != 0) { if (playerTurn) { System.out.println("PLAYER 1 TURN"); System.out.println("Take a shot: "); shot = scan.nextLine(); String shotArray[] = shot.split(","); x = Integer.valueOf(shotArray[0]); y = Integer.valueOf(shotArray[1]); shotReturn = shoot(x, y); if (shotReturn == -1) { System.out.println("Miss!"); } else if (shotReturn == 0) { System.out.println("Hit!"); countPlayer2--; } else { System.out.println("Ship sank!"); } playerTurn = false; } else { System.out.println("PLAYER 2 TURN"); System.out.println("Take a shot: "); shot = scan.nextLine(); String shotArray[] = shot.split(",");
x = Integer.valueOf(shotArray[0]); y = Integer.valueOf(shotArray[1]); shotReturn = shoot(x, y); if (shotReturn == -1) { System.out.println("Miss!"); } else if (shotReturn == 0) { System.out.println("Hit!"); countPlayer1--; } else { System.out.println("Ship sank!"); } playerTurn = true; } } } }

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  • 1. import java.util.Scanner; public class Main { public static int gridArray1[][] = null; public static int gridArray2[][] = null; public static boolean playerTurn = true; public static int count = 0; public static void setGridDimensions(int x_max, int y_max) { Main.gridArray1 = new int[x_max][y_max]; Main.gridArray2 = new int[x_max][y_max]; for (int i = 0; i < x_max; i++) { for (int j = 0; j < y_max; j++) { gridArray1[i][j] = -1; gridArray2[i][j] = -1; } } } static void placeShip(int starting_x, int starting_y, int length, int direction) { count++; int ships[] = new int[10]; int battleshipArrayPositions1[] = new int[4]; int cruiserArrayPositions1[] = new int[3]; int submarineArrayPositions1[] = new int[3]; int destroyerArrayPositions1[] = new int[2]; int carrierArrayPositions2[] = new int[5]; int battleshipArrayPositions2[] = new int[4]; int cruiserArrayPositions2[] = new int[3]; int submarineArrayPositions2[] = new int[3]; int destroyerArrayPositions2[] = new int[2]; if (playerTurn) { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) {
  • 2. Main.gridArray1[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray1[starting_x][i] = 0; } } } else { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) { Main.gridArray2[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray2[starting_x][i] = 0; } } } } boolean isConflictingShipPlacement(int starting_x, int starting_y, int length, int direction) { return false; } static int shoot(int x, int y) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (Main.gridArray2[i][j] == 0) { return 0; } } } } else { } return 0; } boolean hasBeenAttempted(int x, int y) {
  • 3. return false; } static void displayGrid(boolean showShips) { int count = 0; System.out.print(" 0 1 2 3 4 5 6 7 8 9"); if (showShips) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 0) { System.out.print("@ "); } else if (Main.gridArray1[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } else { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray2[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 0) { System.out.print("@ "); } else if (Main.gridArray2[i][j] == 1) {
  • 4. System.out.print("+ "); } else { System.out.print("X "); } } } } } else { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 0) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } else { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray2[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 0) {
  • 5. System.out.print("- "); } else if (Main.gridArray2[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } } System.out.println(""); } public static void main(String[] args) { int carrierLength = 5, battleshipLength = 4, cruiserLength = 3, submarineLength = 3, destroyerLength = 2, countPlayer1 = 5, countPlayer2 = 5, x, y, carrierDirectionNumber, battleshipDirectionNumber, cruiserDirectionNumber, submarineDirectionNumber, destroyerDirectionNumber, shotReturn; String carrier, battleship, cruiser, submarine, destroyer, carrierDirection, battleshipDirection, cruiserDirection, submarineDirection, destroyerDirection, shot; setGridDimensions(10, 10); Scanner scan = new Scanner(System.in); for (int i = 0; i <= 1; i++) { if (playerTurn) { System.out.println("PLAYER 1 TURN"); displayGrid(true); System.out.println("Place your Carrier (length 5): "); carrier = scan.nextLine(); String carrierArray[] = carrier.split(","); x = Integer.valueOf(carrierArray[0]); y = Integer.valueOf(carrierArray[1]); System.out.println("Choose direction (d/r): "); carrierDirection = scan.nextLine(); if (carrierDirection.equals("d")) {
  • 6. carrierDirection = "0"; } else { carrierDirection = "1"; } carrierDirectionNumber = Integer.valueOf(carrierDirection); placeShip(x, y, carrierLength, carrierDirectionNumber); displayGrid(true); System.out.println("Place your Battleship (length 4): "); battleship = scan.nextLine(); String battleshipArray[] = battleship.split(","); x = Integer.valueOf(battleshipArray[0]); y = Integer.valueOf(battleshipArray[1]); System.out.println("Choose direction (d/r): "); battleshipDirection = scan.nextLine(); if (battleshipDirection.equals("d")) { battleshipDirection = "0"; } else { battleshipDirection = "1"; } battleshipDirectionNumber = Integer.valueOf(battleshipDirection); placeShip(x, y, battleshipLength, battleshipDirectionNumber); displayGrid(true); System.out.println("Place your Cruiser (length 3): "); cruiser = scan.nextLine(); String cruiserArray[] = cruiser.split(","); x = Integer.valueOf(cruiserArray[0]); y = Integer.valueOf(cruiserArray[1]); System.out.println("Choose direction (d/r): "); cruiserDirection = scan.nextLine(); if (cruiserDirection.equals("d")) { cruiserDirection = "0"; } else { cruiserDirection = "1"; } cruiserDirectionNumber = Integer.valueOf(cruiserDirection); placeShip(x, y, cruiserLength, cruiserDirectionNumber);
  • 7. displayGrid(true); System.out.println("Place your Submarine (length 3): "); submarine = scan.nextLine(); String submarineArray[] = submarine.split(","); x = Integer.valueOf(submarineArray[0]); y = Integer.valueOf(submarineArray[1]); System.out.println("Choose direction (d/r): "); submarineDirection = scan.nextLine(); if (submarineDirection.equals("d")) { submarineDirection = "0"; } else { submarineDirection = "1"; } submarineDirectionNumber = Integer.valueOf(submarineDirection); placeShip(x, y, submarineLength, submarineDirectionNumber); displayGrid(true); System.out.println("Place your Destroyer (length 2): "); destroyer = scan.nextLine(); String destroyerArray[] = destroyer.split(","); x = Integer.valueOf(destroyerArray[0]); y = Integer.valueOf(destroyerArray[1]); System.out.println("Choose direction (d/r): "); destroyerDirection = scan.nextLine(); if (destroyerDirection.equals("d")) { destroyerDirection = "0"; } else { destroyerDirection = "1"; } destroyerDirectionNumber = Integer.valueOf(destroyerDirection); placeShip(x, y, destroyerLength, destroyerDirectionNumber); displayGrid(true); playerTurn = false; } else { System.out.println("PLAYER 2 TURN"); displayGrid(true); System.out.println("Place your Carrier (length 5): ");
  • 8. carrier = scan.nextLine(); String carrierArray[] = carrier.split(","); x = Integer.valueOf(carrierArray[0]); y = Integer.valueOf(carrierArray[1]); System.out.println("Choose direction (d/r): "); carrierDirection = scan.nextLine(); if (carrierDirection.equals("d")) { carrierDirection = "0"; } else { carrierDirection = "1"; } carrierDirectionNumber = Integer.valueOf(carrierDirection); placeShip(x, y, carrierLength, carrierDirectionNumber); displayGrid(true); System.out.println("Place your Battleship (length 4): "); battleship = scan.nextLine(); String battleshipArray[] = battleship.split(","); x = Integer.valueOf(battleshipArray[0]); y = Integer.valueOf(battleshipArray[1]); System.out.println("Choose direction (d/r): "); battleshipDirection = scan.nextLine(); if (battleshipDirection.equals("d")) { battleshipDirection = "0"; } else { battleshipDirection = "1"; } battleshipDirectionNumber = Integer.valueOf(battleshipDirection); placeShip(x, y, battleshipLength, battleshipDirectionNumber); displayGrid(true); System.out.println("Place your Cruiser (length 3): "); cruiser = scan.nextLine(); String cruiserArray[] = cruiser.split(","); x = Integer.valueOf(cruiserArray[0]); y = Integer.valueOf(cruiserArray[1]); System.out.println("Choose direction (d/r): "); cruiserDirection = scan.nextLine();
  • 9. if (cruiserDirection.equals("d")) { cruiserDirection = "0"; } else { cruiserDirection = "1"; } cruiserDirectionNumber = Integer.valueOf(cruiserDirection); placeShip(x, y, cruiserLength, cruiserDirectionNumber); displayGrid(true); System.out.println("Place your Submarine (length 3): "); submarine = scan.nextLine(); String submarineArray[] = submarine.split(","); x = Integer.valueOf(submarineArray[0]); y = Integer.valueOf(submarineArray[1]); System.out.println("Choose direction (d/r): "); submarineDirection = scan.nextLine(); if (submarineDirection.equals("d")) { submarineDirection = "0"; } else { submarineDirection = "1"; } submarineDirectionNumber = Integer.valueOf(submarineDirection); placeShip(x, y, submarineLength, submarineDirectionNumber); displayGrid(true); System.out.println("Place your Destroyer (length 2): "); destroyer = scan.nextLine(); String destroyerArray[] = destroyer.split(","); x = Integer.valueOf(destroyerArray[0]); y = Integer.valueOf(destroyerArray[1]); System.out.println("Choose direction (d/r): "); destroyerDirection = scan.nextLine(); if (destroyerDirection.equals("d")) { destroyerDirection = "0"; } else { destroyerDirection = "1"; } destroyerDirectionNumber = Integer.valueOf(destroyerDirection);
  • 10. placeShip(x, y, destroyerLength, destroyerDirectionNumber); displayGrid(true); } } while (countPlayer1 != 0 || countPlayer2 != 0) { if (playerTurn) { System.out.println("PLAYER 1 TURN"); System.out.println("Take a shot: "); shot = scan.nextLine(); String shotArray[] = shot.split(","); x = Integer.valueOf(shotArray[0]); y = Integer.valueOf(shotArray[1]); shotReturn = shoot(x, y); if (shotReturn == -1) { System.out.println("Miss!"); } else if (shotReturn == 0) { System.out.println("Hit!"); countPlayer2--; } else { System.out.println("Ship sank!"); } playerTurn = false; } else { System.out.println("PLAYER 2 TURN"); System.out.println("Take a shot: "); shot = scan.nextLine(); String shotArray[] = shot.split(","); x = Integer.valueOf(shotArray[0]); y = Integer.valueOf(shotArray[1]); shotReturn = shoot(x, y); if (shotReturn == -1) { System.out.println("Miss!"); } else if (shotReturn == 0) { System.out.println("Hit!"); countPlayer1--; } else {
  • 11. System.out.println("Ship sank!"); } playerTurn = true; } } } } Solution import java.util.Scanner; public class Main { public static int gridArray1[][] = null; public static int gridArray2[][] = null; public static boolean playerTurn = true; public static int count = 0; public static void setGridDimensions(int x_max, int y_max) { Main.gridArray1 = new int[x_max][y_max]; Main.gridArray2 = new int[x_max][y_max]; for (int i = 0; i < x_max; i++) { for (int j = 0; j < y_max; j++) { gridArray1[i][j] = -1; gridArray2[i][j] = -1; } } } static void placeShip(int starting_x, int starting_y, int length, int direction) { count++; int ships[] = new int[10]; int battleshipArrayPositions1[] = new int[4]; int cruiserArrayPositions1[] = new int[3]; int submarineArrayPositions1[] = new int[3]; int destroyerArrayPositions1[] = new int[2];
  • 12. int carrierArrayPositions2[] = new int[5]; int battleshipArrayPositions2[] = new int[4]; int cruiserArrayPositions2[] = new int[3]; int submarineArrayPositions2[] = new int[3]; int destroyerArrayPositions2[] = new int[2]; if (playerTurn) { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) { Main.gridArray1[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray1[starting_x][i] = 0; } } } else { if (direction == 0) { for (int i = starting_x; i < starting_x + length; i++) { Main.gridArray2[i][starting_y] = 0; } } else { for (int i = starting_y; i < starting_y + length; i++) { Main.gridArray2[starting_x][i] = 0; } } } } boolean isConflictingShipPlacement(int starting_x, int starting_y, int length, int direction) { return false; } static int shoot(int x, int y) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (Main.gridArray2[i][j] == 0) {
  • 13. return 0; } } } } else { } return 0; } boolean hasBeenAttempted(int x, int y) { return false; } static void displayGrid(boolean showShips) { int count = 0; System.out.print(" 0 1 2 3 4 5 6 7 8 9"); if (showShips) { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 0) { System.out.print("@ "); } else if (Main.gridArray1[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } else { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) {
  • 14. if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray2[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 0) { System.out.print("@ "); } else if (Main.gridArray2[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } } else { if (playerTurn) { for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray1[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 0) { System.out.print("- "); } else if (Main.gridArray1[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } else {
  • 15. for (int i = 0; i < 10; i++) { for (int j = 0; j < 10; j++) { if (j % 10 == 0) { System.out.print(" " + count + " "); count++; } if (Main.gridArray2[i][j] == -1) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 0) { System.out.print("- "); } else if (Main.gridArray2[i][j] == 1) { System.out.print("+ "); } else { System.out.print("X "); } } } } } System.out.println(""); } public static void main(String[] args) { int carrierLength = 5, battleshipLength = 4, cruiserLength = 3, submarineLength = 3, destroyerLength = 2, countPlayer1 = 5, countPlayer2 = 5, x, y, carrierDirectionNumber, battleshipDirectionNumber, cruiserDirectionNumber, submarineDirectionNumber, destroyerDirectionNumber, shotReturn; String carrier, battleship, cruiser, submarine, destroyer, carrierDirection, battleshipDirection, cruiserDirection, submarineDirection, destroyerDirection, shot; setGridDimensions(10, 10); Scanner scan = new Scanner(System.in); for (int i = 0; i <= 1; i++) { if (playerTurn) { System.out.println("PLAYER 1 TURN");
  • 16. displayGrid(true); System.out.println("Place your Carrier (length 5): "); carrier = scan.nextLine(); String carrierArray[] = carrier.split(","); x = Integer.valueOf(carrierArray[0]); y = Integer.valueOf(carrierArray[1]); System.out.println("Choose direction (d/r): "); carrierDirection = scan.nextLine(); if (carrierDirection.equals("d")) { carrierDirection = "0"; } else { carrierDirection = "1"; } carrierDirectionNumber = Integer.valueOf(carrierDirection); placeShip(x, y, carrierLength, carrierDirectionNumber); displayGrid(true); System.out.println("Place your Battleship (length 4): "); battleship = scan.nextLine(); String battleshipArray[] = battleship.split(","); x = Integer.valueOf(battleshipArray[0]); y = Integer.valueOf(battleshipArray[1]); System.out.println("Choose direction (d/r): "); battleshipDirection = scan.nextLine(); if (battleshipDirection.equals("d")) { battleshipDirection = "0"; } else { battleshipDirection = "1"; } battleshipDirectionNumber = Integer.valueOf(battleshipDirection); placeShip(x, y, battleshipLength, battleshipDirectionNumber); displayGrid(true); System.out.println("Place your Cruiser (length 3): "); cruiser = scan.nextLine(); String cruiserArray[] = cruiser.split(","); x = Integer.valueOf(cruiserArray[0]); y = Integer.valueOf(cruiserArray[1]);
  • 17. System.out.println("Choose direction (d/r): "); cruiserDirection = scan.nextLine(); if (cruiserDirection.equals("d")) { cruiserDirection = "0"; } else { cruiserDirection = "1"; } cruiserDirectionNumber = Integer.valueOf(cruiserDirection); placeShip(x, y, cruiserLength, cruiserDirectionNumber); displayGrid(true); System.out.println("Place your Submarine (length 3): "); submarine = scan.nextLine(); String submarineArray[] = submarine.split(","); x = Integer.valueOf(submarineArray[0]); y = Integer.valueOf(submarineArray[1]); System.out.println("Choose direction (d/r): "); submarineDirection = scan.nextLine(); if (submarineDirection.equals("d")) { submarineDirection = "0"; } else { submarineDirection = "1"; } submarineDirectionNumber = Integer.valueOf(submarineDirection); placeShip(x, y, submarineLength, submarineDirectionNumber); displayGrid(true); System.out.println("Place your Destroyer (length 2): "); destroyer = scan.nextLine(); String destroyerArray[] = destroyer.split(","); x = Integer.valueOf(destroyerArray[0]); y = Integer.valueOf(destroyerArray[1]); System.out.println("Choose direction (d/r): "); destroyerDirection = scan.nextLine(); if (destroyerDirection.equals("d")) { destroyerDirection = "0"; } else { destroyerDirection = "1";
  • 18. } destroyerDirectionNumber = Integer.valueOf(destroyerDirection); placeShip(x, y, destroyerLength, destroyerDirectionNumber); displayGrid(true); playerTurn = false; } else { System.out.println("PLAYER 2 TURN"); displayGrid(true); System.out.println("Place your Carrier (length 5): "); carrier = scan.nextLine(); String carrierArray[] = carrier.split(","); x = Integer.valueOf(carrierArray[0]); y = Integer.valueOf(carrierArray[1]); System.out.println("Choose direction (d/r): "); carrierDirection = scan.nextLine(); if (carrierDirection.equals("d")) { carrierDirection = "0"; } else { carrierDirection = "1"; } carrierDirectionNumber = Integer.valueOf(carrierDirection); placeShip(x, y, carrierLength, carrierDirectionNumber); displayGrid(true); System.out.println("Place your Battleship (length 4): "); battleship = scan.nextLine(); String battleshipArray[] = battleship.split(","); x = Integer.valueOf(battleshipArray[0]); y = Integer.valueOf(battleshipArray[1]); System.out.println("Choose direction (d/r): "); battleshipDirection = scan.nextLine(); if (battleshipDirection.equals("d")) { battleshipDirection = "0"; } else { battleshipDirection = "1"; } battleshipDirectionNumber = Integer.valueOf(battleshipDirection);
  • 19. placeShip(x, y, battleshipLength, battleshipDirectionNumber); displayGrid(true); System.out.println("Place your Cruiser (length 3): "); cruiser = scan.nextLine(); String cruiserArray[] = cruiser.split(","); x = Integer.valueOf(cruiserArray[0]); y = Integer.valueOf(cruiserArray[1]); System.out.println("Choose direction (d/r): "); cruiserDirection = scan.nextLine(); if (cruiserDirection.equals("d")) { cruiserDirection = "0"; } else { cruiserDirection = "1"; } cruiserDirectionNumber = Integer.valueOf(cruiserDirection); placeShip(x, y, cruiserLength, cruiserDirectionNumber); displayGrid(true); System.out.println("Place your Submarine (length 3): "); submarine = scan.nextLine(); String submarineArray[] = submarine.split(","); x = Integer.valueOf(submarineArray[0]); y = Integer.valueOf(submarineArray[1]); System.out.println("Choose direction (d/r): "); submarineDirection = scan.nextLine(); if (submarineDirection.equals("d")) { submarineDirection = "0"; } else { submarineDirection = "1"; } submarineDirectionNumber = Integer.valueOf(submarineDirection); placeShip(x, y, submarineLength, submarineDirectionNumber); displayGrid(true); System.out.println("Place your Destroyer (length 2): "); destroyer = scan.nextLine(); String destroyerArray[] = destroyer.split(","); x = Integer.valueOf(destroyerArray[0]);
  • 20. y = Integer.valueOf(destroyerArray[1]); System.out.println("Choose direction (d/r): "); destroyerDirection = scan.nextLine(); if (destroyerDirection.equals("d")) { destroyerDirection = "0"; } else { destroyerDirection = "1"; } destroyerDirectionNumber = Integer.valueOf(destroyerDirection); placeShip(x, y, destroyerLength, destroyerDirectionNumber); displayGrid(true); } } while (countPlayer1 != 0 || countPlayer2 != 0) { if (playerTurn) { System.out.println("PLAYER 1 TURN"); System.out.println("Take a shot: "); shot = scan.nextLine(); String shotArray[] = shot.split(","); x = Integer.valueOf(shotArray[0]); y = Integer.valueOf(shotArray[1]); shotReturn = shoot(x, y); if (shotReturn == -1) { System.out.println("Miss!"); } else if (shotReturn == 0) { System.out.println("Hit!"); countPlayer2--; } else { System.out.println("Ship sank!"); } playerTurn = false; } else { System.out.println("PLAYER 2 TURN"); System.out.println("Take a shot: "); shot = scan.nextLine(); String shotArray[] = shot.split(",");
  • 21. x = Integer.valueOf(shotArray[0]); y = Integer.valueOf(shotArray[1]); shotReturn = shoot(x, y); if (shotReturn == -1) { System.out.println("Miss!"); } else if (shotReturn == 0) { System.out.println("Hit!"); countPlayer1--; } else { System.out.println("Ship sank!"); } playerTurn = true; } } } }