在最后一行代碼的主要方法中，我有一個目錄可以從我的桌面運行 maze.txt 來運行迷宮。我該如何解決這個問題，因為如果我將此代碼發送給其他人，他們必須打開文件并將目錄更改為他們與我的文件一起下載的 maze.txt 目錄。**迷宮.txt7 7GOOOOXOXXOXOOXOXOOOOXXXXXOOXOXXXXOXXSOOOOOXXXXXXXXimport java.io.*;public class MazeSolver {private char [][] maze;private int startX , startY;private int counter = 0;public MazeSolver(String fileName) throws IOException { maze = fileIterator(fileName); startX = startX(maze); startY = startY(maze); solve(startX,startY); System.out.println(printMaze());}public void solve(int x, int y) { if (findPath(x,y)) { maze[x][y] = 'S'; }}public boolean findPath(int x , int y){ counter ++; if (maze[x][y] > 7) {return false;} if (maze[x][y] == 'G') {return true;} if (maze[x][y] == 'X' || maze[x][y] == 'O'){return false;} maze[x][y] ='O'; boolean result; result = findPath(x , y+1); if(result){return true;} result = findPath(x-1 , y); if(result){return true;} result = findPath(x , y-1); if(result){return true;} result = findPath(x+1 , y); if(result){return true;} maze[x][y] = 'O'; return false;}public String printMaze() { String output = ""; for (int x = 0; x < 7; x++) { for (int y = 0; y < 7; y++) { output += maze[x][y] + " "; } output += "\n"; } return output;}private char[][] fileIterator(String fileName) throws IOException { File file = new File(fileName); if(!file.exists()){ System.out.println(fileName+ "does not exists"); } if(!(file.canRead() && file.isFile())){ System.out.println(fileName + "can not be read"); } BufferedReader read = new BufferedReader(new FileReader(file)); String rea = read.readLine(); String[] split = rea.split(" "); int row = Integer.valueOf(split[0]); int col = Integer.valueOf(split[1]);
2 回答
aluckdog
TA貢獻1847條經驗 獲得超7個贊
有很多解決方案，具體取決于您的需要。
一個簡單的方法是，如果您希望用戶嘗試他們可以提供的不同 maze.txt 文件，則從命令行參數（即，從argsmain 方法的參數）獲取文件的路徑。
您可以將主要方法主體更改為：
MazeSolver ms = new MazeSolver(args[0]);
當然，還需要進一步檢查，但這與本練習無關。
然后，用戶從終端運行您的程序：
java MazeSolver /path/to/their/maze.txt
/path/to/their/maze.txt將args[0]在您的主要方法中捕獲。
神不在的星期二
TA貢獻1963條經驗 獲得超6個贊
import java.util.Scanner;
import java.io.*;
public class MazeSolver {
private char[][] maze;
private int startX;
private int startY;
private int row;
private int col;
private int endX;
private int endY;
public MazeSolver (String fileName) {
try {
Scanner get = new Scanner(new FileReader(fileName));
row = get.nextInt(); // Integer.parseInt(sChar[0]);
col = get.nextInt(); //col = Integer.parseInt(sChar[2]);
maze = new char[row][col];
String mazeString = "";
// Read the entire file and store in a String called mazeString
while(get.hasNextLine()) {
mazeString += get.nextLine();
}
char[] temp = mazeString.toCharArray();
for(int x = 0; x < row * col; x++) {
maze[x/row][x%col] = temp[x];
}
}
catch (IOException e) {
System.out.println("\nFile cannot be found. Please try again: \n");
System.exit(0);
}
char start = 'S';
for(int i = 0; i < row; i++) {
for(int x = 0; x < col; x++) {
char setStart = maze[i][x];
if(setStart == start) {
startX = i;
startY = x;
}
}
}
char goal = 'G';
for(int i = 0; i < row; i++) {
for(int x = 0; x < col; x++) {
char setEnd = maze[i][x];
if(setEnd == goal) {
endX = i;
endY = x;
}
}
}
if (solveMaze(startX,startY)){
System.out.println("Solution Found");
printMaze();
}
else{
System.out.println("No solution Found");
printMaze();
}
}
public void printMaze() {
for(int r = 0; r < row; r++) {
for(int c = 0; c < col; c++) {
System.out.print(maze[r][c]);
}
System.out.println();
}
}
public boolean solveMaze(int x, int y) {
// Base case
if(x == endX && y == endY) {
maze[x][y] = 'G';
maze[startX][startY]='S';
return true;
}
// Out of bounds
if((x >= 0 && x < row && y >= 0 && y < col && maze[x][y] != 'X' && maze[x][y] != '.') == true) {
maze[x][y] = '.';
// Right
if(solveMaze(x + 1, y)) {
return true;
}
// Left
if(solveMaze(x - 1, y)) {
return true;
}
// Up
if(solveMaze(x, y - 1)) {
return true;
}
// Down
if(solveMaze(x, y + 1)) {
return true;
}
else {
maze[x][y] = '#';
return false;
}
}
else {
return false;
}
}
}
添加回答
舉報
0/150
提交
取消