I am trying to sort an array ( ads
, of type ETstrain
) by one of the instance variables ( distancefrom
). How can I do this? I have tried using a comparator and then a sorting function. Is there a better way/ do I have any logical fallacies?
abstract class distanceComparator implements Comparator<ETstrain> {
@Override
public int compare(ETstrain a, ETstrain b) {
return a.distancefrom < b.distancefrom ? -1 : a.distancefrom == b.distancefrom ? 0 : 1;
}
}
public static <ETstrain> void sort(ads[] a,
Comparator<ETstrain> b)
Just try:
Arrays.sort(yourETStrainArray, distanceComparator);
If you have a List instead of an array, use:
Collections.sort(yourETStrainList, distanceComparator);
Working code:
public class distanceComparator implements Comparator<ETstrain> {
@Override
public int compare(ETstrain a, ETstrain b) {
return a.distancefrom < b.distancefrom ? -1
: a.distancefrom == b.distancefrom ? 0 : 1;
}
public <ETstrain> void sort(ETstrain[] ads,
Comparator<? super ETstrain> distanceComparator){
Arrays.sort(ads, distanceComparator);
}
}
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