即時試圖在java中測試一個程序,我得到一個數組索引越界異常,我不認爲應該拋出。看看這段代碼,並告訴我,如果我錯過了什麼?日食告訴我的錯誤被拋出在我添加了一個評論,以顯示它數組索引超出範圍異常,是否意味着發生?
class maze{
private int cols; // number of columns in maze
private int rows; // number of rows in maze
private String name;
private weightedGraph<Integer> graph;
private dijkstra solution;
public char[][] mazeStore;
public maze(String filename){
try{
FileReader r = new FileReader(filename);
Scanner s = new Scanner(r);
this.rows = s.nextInt();
this.cols = s.nextInt();
this.name = filename;
this.mazeStore = new char[(2*rows)+1][(2*cols)+1];
String line = s.nextLine();
for(int k = 0; k < ((2*rows)+1); k++){
char[] temp = line.toCharArray();
for(int i = 0; i < temp.length; i++){
mazeStore[k][i] = temp[i];
line = s.nextLine();
}
}
graph = new weightedGraph<Integer>(rows*cols);
for(int y = 1; y < 2*rows; y++){
for(int x = 1; x < 2*cols; x++){
if((x % 2 == 1) && (y % 2 == 0)){
if(mazeStore[x][y] != '-'){ // <<<<<<<<<<<<<<THIS IS WHERE THE ERROR IS THROWN
int label = (x - 1) + (x/2);
graph.addEdge(label, label+cols, 1);
graph.addEdge(label+cols, label, 1);
}
}
if((x % 2 == 0) && (y % 2 == 1)){
if(mazeStore[x][y] != '|'){
int label = ((x - 1) + (x/2)) + (y/2);
graph.addEdge(label, label+1, 1);
graph.addEdge(label+1, label, 1);
}
}
}
}
this.solution = new dijkstra(graph, 0);
}
catch(FileNotFoundException e){
System.err.println("FileNotFoundException: " + e.getMessage());
}
那麼,那個時候'x'和'y'的值是什麼,以及這個數組的長度是多少涉及? –
1)爲了更快獲得更好的幫助,請發佈[SSCCE](http://sscce.org/)。 2)複製/粘貼錯誤消息。 –
我認爲x應該是y的地方,反之亦然 – Bundy