我正在撰写康威的生命游戏计划，这让我几周感到非常沮丧。到目前为止，我已经编写了大部分代码，但仍然存在一些问题。我提前为众多问题道歉。
我的生命游戏程序以输入文本文件开头，该文件包含30 x 30行 - 和X. - 表示死细胞和X活着。
我现在的问题是：
谢谢，任何帮助都会受到赞赏，因为我很困惑并且没时间了。
我的代码：
package assignment2;
/**
*
* @author jaw209
*/
import java.io.*;
import java.util.*;
import javax.swing.*;
public class Assignment2 {
private static int livecount;
static char[][] copygrid = {{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'},{'-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-','-'}};
public static void main(String[] args) throws FileNotFoundException {
String inputfile;
String output;
String generations;
//Input file = L:\Java 2\Assignment2\Sample input.txt
//Inputs from file to char array
inputfile = JOptionPane.showInputDialog ("Where is the input file? Ex: C:\\users\\public\\desktop\\input.txt ");
Scanner input = new Scanner (new FileReader(inputfile));
char[] chararray = new char[900];
String allvalues = null;
do {
String values = input.next();
allvalues = allvalues + values;
}
while(input.hasNextLine());
chararray = allvalues.toCharArray();
//Reads values in chararray into multi array
char[][] grid1 = new char[30][30];
int i = 4;
for(int row = 0; row < 30; row++){
for(int col = 0; col < 30; col++){
grid1 [row][col] = chararray[i];
i++;
System.out.print(grid1[row][col]);
}
System.out.println();
}
//Finds how many generations should be calculated
generations = JOptionPane.showInputDialog ("How many generations should be calculated?");
int gens = Integer.parseInt(generations);
//Runs the cycle once
for (int row = 0; row < 30; row++){
for (int col = 0; col < 30; col ++){
if (status(grid1[row][col])){
liveSurrounding(grid1, row, col);
moves(row, col);
}
else if (!status(grid1[row][col])){
//run 3 checker
if (liveSurrounding(grid1, row, col) == 3){
copygrid[row][col] = 'X';
}
}
}
}
System.out.println(copygrid);
//Output to File
output = JOptionPane.showInputDialog ("Where is the output file?");
PrintWriter out = new PrintWriter(output);
out.println(Arrays.toString(copygrid));
}
//Check to see if cell is live or dead
public static boolean status(char value){
if (value == 'X'){
return true;
} else {
return false;
}
}
//See if neighbor is alive or dead
public static int liveSurrounding(char [][] grid, int a, int b){
livecount = 0;
if (grid[a-1][b] == 'X'){
livecount++;
}
if (grid[a-1][b+1] == 'X'){
livecount++;
}
if (grid[a][b+1] == 'X'){
livecount++;
}
if (grid[a+1][b+1] == 'X'){
livecount++;
}
if (grid[a+1][b] == 'X'){
livecount++;
}
if (grid[a+1][b-1] == 'X'){
livecount++;
}
if (grid[a][b-1] == 'X'){
livecount++;
}
if (grid[a-1][b-1] == 'X'){
livecount++;
}
return livecount;
}
//Adjust alive cells for each condition
public static char[][] moves(int a, int b){
switch(livecount){
case 0: copygrid[a][b] = 'X'; break;
case 1: copygrid[a--][b] = 'X'; break;
case 2: copygrid[a][b++] = 'X'; break;
case 3: copygrid[a][b--] = 'X'; break;
case 4: copygrid[a++][b] = 'X'; break;
case 5: copygrid[a--][b++] = 'X'; break;
case 6: copygrid[a++][b--] = 'X';
case 7: copygrid[a--][b--] = 'X'; break;
case 8: copygrid[a++][b++] = 'X'; break;
default:
}
return copygrid;
}
}
答案 0 :(得分：0)
你的问题确实不够准确，我们不打算在这里查看你的所有代码，也许CodeReview.SE的人愿意这样做，一旦你的代码有效......
要回答有关如何避免IndexOutOfBoundsException的问题，可以通过首先检查您要访问的元素是否在数组的边界内，然后访问它来避免这种情况，例如：
private void accessArray(final int[] array, final int index) {
if (0 <= index && index < array.length) {
int whatever = array[index];
}
}
答案 1 :(得分：0)
回答＃3：Arrays.toString通过在每个元素上调用被覆盖的toString来工作。二维数组是一个数组数组。因此，数组的每个元素本身就是一个数组，并且在数组上调用toString会为您提供一个地址，因为它看起来就像您已经知道的那样。
toString的{{3}}说：
如果数组包含其他数组作为元素，则转换为 字符串由Object.toString（）方法继承自Object 描述他们的身份而不是他们的内容。
调查我认为你想要的documentation。
答案 2 :(得分：0)
有些错误......
char[] chararray = new char[900]; - ＆gt;你固定的长度？您的文件内容超过30个字符，然后IndexOutOfBoundsException将来在此声明int i=4，然后 30 x 30 + 4 = 904 ，然后IndexOutOfBoundsException将会出现
int i = 4; for（int row = 0; row＆lt; 30; row ++）{ for（int col = 0; col＆lt; 30; col ++）{ grid1 [row] [col] = chararray [i]; 我++; 是System.out.print（GRID1 [行] [COL]）; } 的System.out.println（）; }
if (grid[a - 1][b] == 'X')如果a=0比0-1=-1 IndexOutOfBoundsException那么{{1}}将来.............同样会更多，更多。 ......
所以我说，回顾你的代码
答案 3 :(得分：0)
对于＃2：使用此：
for(int gen=0;gen<gens;gen++){
for (int row = 0; row < 30; row++){
for (int col = 0; col < 30; col ++){
if (status(grid1[row][col])){
liveSurrounding(grid1, row, col);
moves(row, col);
}
else if (!status(grid1[row][col])){
//run 3 checker
if (liveSurrounding(grid1, row, col) == 3){
copygrid[row][col] = 'X';
}
}
}
}
}