custom sorting a java array

Question

I have an [] that has some numbers (distances from some point).
I want to create an array of indexes into the first array where the indexes are sorted by the distance.

Answer 1

You should customize your own Comparator and use java API.

http://docs.oracle.com/javase/6/docs/api/java/util/Arrays.html#sort(java.lang.Object[],%20int,%20int)

http://docs.oracle.com/javase/tutorial/collections/interfaces/order.html