package plp.sort;

public class SortableDataTracer implements SortableData {

    private SortableData data;

    public SortableDataTracer(SortableData data) {
	this.data = data;
    }

    public int length() {
	return data.length();
    }

    public void swap(int i, int j) {
	System.out.println("Swapping " + i + " " + j);
	data.swap(i, j);
    }

    public Object access(int i) {
	System.out.println("Accessing " + i);
	return data.access(i);
    }

    public int compare(int i, int j) {
	System.out.println("Comparing " + i + " " + j);
	return data.compare(i, j);
    }
}