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exchange car sales germany bmw x6 pricing car window sun shade car show tucson high seat chair advert{{code}} /* SimpleBoard.java */ /** * Simple class that implements an 8x8 game board with three possible values * for each cell: 0, 1 or 2. * * DO NOT CHANGE ANY PROTOTYPES IN THIS FILE. **/ public class SimpleBoard { private final static int DIMENSION = 8; private int[][] grid; /** * Invariants: * (1) grid.length == DIMENSION. * (2) for all 0 <= i < DIMENSION, grid[i].length == DIMENSION. * (3) for all 0 <= i, j < DIMENSION, grid[i][j] >= 0 and grid[i][j] <= 2. **/ /** * Construct a new board in which all cells are zero. */ public SimpleBoard() { grid = new int[DIMENSION][DIMENSION]; } /** * Set the cell (x, y) in the board to the given value mod 3. * @param value to which the element should be set (normally 0, 1, or 2). * @param x is the x-index. * @param y is the y-index. * @exception ArrayIndexOutOfBoundsException is thrown if an invalid index * is given. **/ public void setElementAt(int x, int y, int value) { grid[x][y] = value % 3; if (grid[x][y] < 0) { grid[x][y] = grid[x][y] + 3; } } /** * Get the valued stored in cell (x, y). * @param x is the x-index. * @param y is the y-index. * @return the stored value (between 0 and 2). * @exception ArrayIndexOutOfBoundsException is thrown if an invalid index * is given. */ public int elementAt(int x, int y) { return grid[x][y]; } /** * Returns true if "this" SimpleBoard and "board" have identical values in * every cell. * @param board is the second SimpleBoard. * @return true if the boards are equal, false otherwise. */ public boolean equals(Object board) { if (board.getClass() == this.getClass()) { return (this.hashCode() == board.hashCode()); } else { return false; } } /** * Returns a hash code for this SimpleBoard. * @return a number between Integer.MIN_VALUE and Integer.MAX_VALUE. */ public int hashCode() { int hash = 0; for (int io=0; io<DIMENSION; io++) { for (int ii=0; ii<DIMENSION; ii++) { hash = hash * 3 + grid[io][ii]; } } return hash; } }
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