sorting integers in order lowest to highest java

Question

These numbers are stored in the same integer variable. How would I go about sorting the integers in order lowest to highest?

11367
11358
11421
11530
11491
11218
11789

Answer 1

There are two options, really:

1. Use standard collections, as explained by Shakedown
2. Use Arrays.sort

E.g.,

int[] ints = {11367, 11358, 11421, 11530, 11491, 11218, 11789};
Arrays.sort(ints);
System.out.println(Arrays.asList(ints));

That of course assumes that you already have your integers as an array. If you need to parse those first, look for String.split and Integer.parseInt.

Answer 2

You can put them into a list and then sort them using their natural ordering, like so:

final List<Integer> list = Arrays.asList(11367, 11358, 11421, 11530, 11491, 11218, 11789);
Collections.sort( list );
// Use the sorted list

If the numbers are stored in the same variable, then you'll have to somehow put them into a List and then call sort, like so:

final List<Integer> list = new ArrayList<Integer>();
list.add( myVariable );
// Change myVariable to another number...
list.add( myVariable );
// etc...

Collections.sort( list );
// Use the sorted list

• Collections.sort( List )