请教runtime error

显示全部楼层 · 2009-4-2 16:12:45

请看以下代码，我看了很多遍，都不知错在哪里。提交后老是显示runtime error 。我修改了我觉得会错的地方，现在觉得越修改越难看，但是还是runtime error。是数组问题吗？还是其他问题？请高手指点。
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.Scanner;
import java.util.ArrayList;
public class Test {

public static void main(String[] args){

//输入数据;

ArrayList array = new ArrayList(), array2 = new ArrayList(), array3 = new ArrayList();

BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

int[][] way ;

int minCost = 100;

int minNum = 0;

int sure = 0;

int size = 0;

int sum = 0;

int temp = 0;

int mount = 0;

Scanner scan;

try{

mount = Integer.parseInt(in.readLine());

while(mount != 0){

way = new int[mount][mount];

for(int m = 0;m < mount; m++){

for(int n = 0; n < mount; n++){

way[m][n] = 100;

}

}

for(int i = 0; i < mount-1; i++){

scan = new Scanner(in.readLine());

scan.next();

int n = Integer.parseInt(scan.next());

for(int j = 1; j <= n; j++){

temp = scan.next().charAt(0) - 'A';

way[temp] = way[temp] = Integer.parseInt(scan.next());

while(scan.hasNext())

scan.next();

}

}

//开始计算最小生成树;

array.add(new Integer(sure));

size = array.size();

while(size != mount){

for(int m = 0; m< size ; m++){

sure = (Integer)array.get(m);

for(int k = 0 ; k < mount ; k++){

if(way[sure][k] < minCost){

if(!array.contains(k)){

minCost =way[sure][k];

minNum= k;

}

}

}

}

array.add(new Integer(minNum));

array2.add(new Integer(minCost));

minCost = 100;

minNum = 0;

size = array.size();

}

while(!array2.isEmpty()){

sum = sum + (Integer)array2.remove(0);

}

array.clear();

array3.add(new Integer(sum));

sure = 0;

sum = 0;

mount = Integer.parseInt(in.readLine());

}

while(! array3.isEmpty())

System.out.println((Integer)array3.remove(0));

}catch(IOException e ){}
}
}

千问 · 2009-4-2 16:12:45

An error that occurs during the execution of a program. In contrast, compile-time errors occur while a program is being compiled. Runtime errors indicate bugs in the program or problems that the designers had anticipated but could do nothing about. For example, running out of memory will often cause a runtime error.(运行时错误是程序执行期间...