@Test
public void testEntropy() {

    System.out.println("entropy");
    EntropySketch sketch = new EntropySketch(10);
    EntropyExact exact = new EntropyExact();
    
    String s = "hello";
    
    sketch.push(s.getBytes(), 1);
    exact.push(s.getBytes(), 1);
    
    System.out.println("Estimate: " + sketch.entropy());
    System.out.println("Exact: " + exact.entropy());
}