Java Coordinates Error with array

Question

enter image description here

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException

for (int i = 0; i < size; i++) { for (int j = i; j < size; j++) {   
   distances[i][j] = haversin(coords[i][0], coords[j][0], coords[i][1], 
   coords[j][1]); distances[j][i] = distances[i][j]; } } long start = 
   System.nanoTime(); int[] shortestPath = nearestNeighbour(distances); double 
   bestShort = 0; for (int i = 0; i < size; ++i) {bestShort += 
   distances[shortestPath[i] - 1][shortestPath[i + 1] - 1]; } bestShort += 
   distances[shortestPath[size - 1]][shortestPath[0]]; 
}

plz post the codes not images .still same as previous question .no improvement — Madhawa Priyashantha, Apr 21 '16 at 14:29
for (int i = 0; i < size; i++) { for (int j = i; j < size; j++) { distances[i][j] = haversin(coords[i][0], coords[j][0], coords[i][1], coords[j][1]); distances[j][i] = distances[i][j]; } } long start = System.nanoTime(); int[] shortestPath = nearestNeighbour(distances); double bestShort = 0; for (int i = 0; i < size; ++i) {bestShort += distances[shortestPath[i] - 1][shortestPath[i + 1] - 1]; } bestShort += distances[shortestPath[size - 1]][shortestPath[0]]; — sha83, Apr 21 '16 at 14:33

score 0 · Answer 1 · answered Apr 21 '16 at 14:45

plz edit your post and put all your codes not images or one method. then you have to isolate your operations (to organize and to detect errors): ex :

bestShort += distances[shortestPath[i] - 1][shortestPath[i+1]-1];

to

int shortestPath,shortestPath_1;
for (int i = 0; i < size; ++i) {
shortestPath=shortestPath[i] - 1;
shortestPath_1=shortestPath[i + 1] - 1;
bestShort += distances[shortestPath][shortestPath_1];
 }

And you should use a debug tool in eclipse to know the source of the problem. with debug tools you can know what happen and variable values

Java Coordinates Error with array

1 Answers1