def test1():
minhp = MinHeap()
for idx in range(10):
minhp.add(idx + 1)
minhp.add(20 - idx)
minhp.printer()
for idx in range(20):
print minhp.extractMin()
def test2():
minhp = MinHeap()
print minhp.isEmpty()
minhp.add(1)
minhp.add(1)
minhp.add(1)
minhp.printer()
print minhp.extractMin()
print minhp.extractMin()
