我来自德国，所以有些词可能是德语中的变数。
所以无论如何，我试图建立一个带阵列的二维房间（没有图形或类似的东西），我有一个＆＃34;播放器＆＃34;谁可以使用按钮1,2,3,4（右下）向左走。这是我的sourecode：
package f_ArrayUebungen;
import java.util.Scanner;
public class a_Array1 {
public static void main(String[] args)
{
Scanner eingabe = new Scanner(System.in);
Scanner sc = new Scanner(System.in);
int eingeben, w = 0, s = 0, l = 0, k = 1;
int ort[][] = new int [s][w];
int kasten[][] = new int [][]
{
// 0 1 2 3 4 5 6 7 8 9 1 2 3
{2,1,1,1,2,1,1,1,2,1,1,1,2},// 0
{2,0,0,0,0,0,0,0,2,0,0,0,2},// 1
{2,0,0,0,2,0,0,0,2,0,0,0,2},// 2
{2,0,0,0,2,0,0,0,0,0,0,0,2},// 3
{2,1,1,0,2,1,0,1,2,1,1,0,2},// 4
{2,0,0,0,2,0,0,0,2,0,0,0,2},// 5
{2,0,0,0,0,0,0,0,0,0,0,0,2},// 6
{2,0,0,0,2,0,0,0,2,0,0,0,2},// 7
{2,0,1,1,2,1,0,1,2,1,1,0,2},// 8
{2,0,0,0,2,0,0,0,0,0,0,0,2},// 9
{2,0,0,0,2,0,0,0,2,0,0,0,2},// 10
{2,0,0,0,0,0,0,0,2,0,0,0,2},// 11
{2,1,1,1,2,1,1,1,2,1,1,1,2} // 12
};
System.out.println("Wo satrten?\n1.)breite");
w = sc.nextInt();
System.out.println("2.) tiefe");
s = sc.nextInt();
kasten [s][w] = 3;
for (int i = 0; i < kasten.length; i++ )
{
for (int j = 0; j < kasten[i].length; j++ )
if ( kasten[i][j] == 2 ){
System.out.print("|");}
else if ( kasten[i][j] == 1 ){
System.out.print("-");}
else if ( kasten[i][j] == 0){
System.out.print(" ");}
else if ( kasten[i][j] == 3 ){
System.out.print("°");}
System.out.println();
}
while (k > l)
{
kasten [s][w] = 0;
System.out.print("Welche Richtung? ");
System.out.println("Runter = 1 | Rechts = 2 | Hoch = 3 | Links = 4");
eingeben = eingabe.nextInt();
int i=0,j=0;
{
if (eingeben == 1){
s = s + 1;
kasten [s][w] = 3;}
if (eingeben == 2){
w = w + 1;
kasten [s][w] = 3;}
if (eingeben == 3){
s = s - 1;
kasten [s][w] = 3;}
if (eingeben == 4){
w = w - 1;
kasten [s][w] = 3;}
}
{
if (kasten [s][w] == 0)
System.out.println("nein");
}
kasten [s][w] = 3;
for (int a = 0; a < kasten.length; a++ )
{
for (int q = 0; q < kasten[a].length; q++ )
if ( kasten[a][q] == 2 ){
System.out.print("|");}
else if ( kasten[a][q] == 1 ){
System.out.print("-");}
else if ( kasten[a][q] == 0){
System.out.print(" ");}
else if ( kasten[a][q] == 3 ){
System.out.print("°");}
System.out.println();
}
}
}
}
所以我希望数字1和2是墙。如果我试图通过他们，程序应该阻止我，并告诉我它不会工作，我得到一个新的决定，我想要的方式。我希望你理解我。我知道程序可以写得更容易，但它是我写的最简单的方法。
感谢您的帮助： - ）
答案 0 :(得分：0)
欢迎使用StackOverflow！
首先，您可以采取一些措施来改进代码：
请在您的软件中使用英文作为所有名称。即使你认为没有人会看到它。 （但既然你已经使用过德语，我也这样做了）
不要重复代码。在屏幕上打印地图将始终如一，他们为此发明了功能（或方法）。请使用它们！
当您不需要时，请勿打印“\ n”等新行字符。这些在其他平台上可能不同。请使用System.out.println()打印出来。
缩进很重要。你已经做了一个不错的工作，但我注意到有些事情会让我感到沮丧，就像下面片段中的最后几行一样：
for (int j = 0; j < kasten[i].length; j++ )
if ( kasten[i][j] == 2 ){
System.out.print("|");}
else if ( kasten[i][j] == 1 ){
System.out.print("-");}
else if ( kasten[i][j] == 0 ){
System.out.print(" ");}
else if ( kasten[i][j] == 3 ){
System.out.print("°");}
System.out.println();
根据我之前评论中的这些改进和建议，请查看代码的更新版本：
package f_ArrayUebungen;
import java.util.Scanner;
public class a_Array1
{
private static void kastenDrucken( int[][] kasten )
{
for (int i = 0; i < kasten.length; i++ )
{
for (int j = 0; j < kasten[i].length; j++ )
{
if ( kasten[i][j] == 2 )
{
System.out.print("|");
}
else if ( kasten[i][j] == 1 )
{
System.out.print("-");
}
else if ( kasten[i][j] == 0 )
{
System.out.print(" ");
}
else if ( kasten[i][j] == 3 )
{
System.out.print("°");
}
}
System.out.println();
}
}
private static boolean bewegenMoglich( int[][] kasten, int s, int w )
{
if (kasten[s][w] != 0)
{
System.out.println("nein");
return false;
}
return true;
}
public static void main(String[] args)
{
Scanner eingabe = new Scanner(System.in);
Scanner sc = new Scanner(System.in);
int eingeben, w = 0, s = 0, l = 0, k = 1;
int ort[][] = new int[s][w]; // ort is never used!
int kasten[][] = new int[][]
{
// 0 1 2 3 4 5 6 7 8 9 1 2 3 <- this line skips number 10
{2,1,1,1,2,1,1,1,2,1,1,1,2},// 0
{2,0,0,0,0,0,0,0,2,0,0,0,2},// 1
{2,0,0,0,2,0,0,0,2,0,0,0,2},// 2
{2,0,0,0,2,0,0,0,0,0,0,0,2},// 3
{2,1,1,0,2,1,0,1,2,1,1,0,2},// 4
{2,0,0,0,2,0,0,0,2,0,0,0,2},// 5
{2,0,0,0,0,0,0,0,0,0,0,0,2},// 6
{2,0,0,0,2,0,0,0,2,0,0,0,2},// 7
{2,0,1,1,2,1,0,1,2,1,1,0,2},// 8
{2,0,0,0,2,0,0,0,0,0,0,0,2},// 9
{2,0,0,0,2,0,0,0,2,0,0,0,2},// 10
{2,0,0,0,0,0,0,0,2,0,0,0,2},// 11
{2,1,1,1,2,1,1,1,2,1,1,1,2} // 12
};
System.out.println("Wo satrten?");
System.out.println("1.)breite");
w = sc.nextInt();
System.out.println("2.) tiefe");
s = sc.nextInt();
kasten[s][w] = 3;
kastenDrucken( kasten );
while (k > l) // Note: k and l are never updated, so this is always true!
{
System.out.print("Welche Richtung? ");
System.out.println("Runter = 1 | Rechts = 2 | Hoch = 3 | Links = 4");
eingeben = eingabe.nextInt();
int i=0,j=0;
if (eingeben == 1 && bewegenMoglich(kasten, s + 1, w))
{
kasten[s][w] = 0;
s = s + 1;
kasten[s][w] = 3;
}
if (eingeben == 2 && bewegenMoglich(kasten, s, w + 1))
{
kasten[s][w] = 0;
w = w + 1;
kasten[s][w] = 3;
}
if (eingeben == 3 && bewegenMoglich(kasten, s - 1, w))
{
kasten[s][w] = 0;
s = s - 1;
kasten[s][w] = 3;
}
if (eingeben == 4 && bewegenMoglich(kasten, s, w - 1))
{
kasten[s][w] = 0;
w = w - 1;
kasten[s][w] = 3;
}
kastenDrucken( kasten );
}
}
}