public static void main(String[] args) { QuickUnion quickUnion = new QuickUnion(10); Scanner scanner = new Scanner(System.in); while (scanner.hasNext()) { String s = scanner.next(); String[] arg = s.split("-"); System.out.println(arg[0] + " and " + arg[1]); quickUnion.union(Integer.valueOf(arg[0]), Integer.valueOf(arg[1])); } quickUnion.show(); }