import java.util.Arrays; /** This program demonstrates the heap sort algorithm. */ public class InsertionSortDemo { public static void main(String[] args) { int[] a = ArrayUtil.randomIntArray(20, 100); System.out.println(Arrays.toString(a)); InsertionSorter sorter = new InsertionSorter(a); sorter.sort(); System.out.println(Arrays.toString(a)); } }