Question

我正在尝试为我的CS课程建立一个康威的生命游戏计划，我坚持使用其中一种方法。以下是我到目前为止的情况：

public class GameOfLifeFunctions {
    public static void toggleCell(int row, int col, int[][] board) {
        // TODO: This next line crashes the program, so delete it when you start coding
        //throw new UnsupportedOperationException("DELETE THIS LINE WHEN YOU START CODING");
        board[row][col]=board[row][col]==0?1:0;
    }

    public static void resetCells(int[][] board) {
        // TODO: This next line crashes the program, so delete it when you start coding
        //throw new UnsupportedOperationException("DELETE THIS LINE WHEN YOU START CODING");
        for (int j=0; j<board.length; j++) {
            for (int i=0; i<board.length; i++) {
                board[j][i]=0;
            }
        }
    }

    public static int[][] copyCells(int[][] board) {
        int[][] copy=new int[board.length][board[0].length];

        // TODO: This next line crashes the program, so delete it when you start coding
        //throw new UnsupportedOperationException("DELETE THIS LINE WHEN YOU START CODING");
        for (int j=0; j<board.length; j++) {
            for (int i=0; i<board.length; i++) {
                copy[j][i]=board[j][i];
            }            
        }
        return copy;
    }

    public static int getNumLiveNeighbors(int[][] cells, int row, int col) {
        int h=cells.length;
        int w=cells[0].length;
        int count=0;

        // TODO: This next line crashes the program, so delete it when you start coding
        //throw new UnsupportedOperationException("DELETE THIS LINE WHEN YOU START CODING");  
        for (int j=row-1; j<=row+1; j++) {
            for (int i=col-1; i<=col+1; i++) {
                //Something broken in this if statement
                //OutOfBounds problem
                if (j==row && i==col) {
                    continue;
                }
                if (j<0 || j>h-1 || 1<0 || i>w-1) {
                    ;
                }       
                else if (cells[j][i]==1) {
                    count++;
                }                
            }
        }
        return count;
    }

    public static int[][] calcualteNextGeneration(int[][] cells) {
        // TODO: Calculate the next generation by calling getNumLiveNeighbors for each
        // cell in the grid. Put the results of the new generation into the 2D array result.
        int[][] result=new int[cells.length][cells[0].length];
        int living;

        // TODO: This next line crashes the program, so delete it when you start coding
        for (int j; j<cells.length; j++) {
            for (int i; i<cells[0].length; i++) {

            }
        }
        throw new UnsupportedOperationException("DELETE THIS LINE WHEN YOU START CODING");
    }

我坚持使用getNumLiveNeighbors方法。如果你能帮我解释那就太好了！

Answer 1

在<item name="android:windowBackground">@android:color/transparent</item> <item name="android:windowContentOverlay">@null</item> <item name="android:windowIsTranslucent">true</item>我认为你的意思是if (j<0 || j>h-1 || 1<0 || i>w-1)作为第三次测试，而不是i<0。

康威的生命游戏方法

1 个答案: