Unit 7 - ArrayList Homework
Important terms
ArrayList<Integer> number = new ArrayList<Integer>();
// add numbers to arraylist
number.add(1);
number.add(2);
number.add(7);
number.add(5);
// find hashcode before being sorted
System.out.println("hashCode before: " + number.hashCode());
// sort arraylist in reverse order, swap first and last elements
Collections.sort(number, Collections.reverseOrder());
Collections.swap(number, 0, 3);
System.out.println(number);
//find hashcode after being sorted
System.out.println("hasCode after: " + numbers.hashCode());