public static void main(String[] args) {
ArrayList<Pair> values = new ArrayList<Pair>();
Pair pair = new Pair();
// set pair values:
System.out.println("enter number of pairs: ");
Scanner input = new Scanner(System.in);
int numPair = input.nextInt();
for (int i = 0; i < numPair; i++) {
pair.inputPair();
pair.sortPair();
values.add(new Pair(pair.getMin(), pair.getMax()));
}
for (Pair value : values) {
System.out.println(" [" + value.getMin() + ", " + value.getMax() + "] ");
}
Collections.sort(values, FIRST_LIST);
System.out.println("After sorting: ");
for (Pair i : values) System.out.println("[" + i.getMin() + ", " + i.getMax() + "] ");
}
