SequentialAccessSparseVector iterators skip items

The following test cases fail, which iterates through the elements of the SequentialAccessSparseVector, because not every value is given back.
SequentialAccessSparseVector.iterator() skips the last element, while the SequentialAccessSparseVector.iterateNonZero() skips the first element.

int [] index = new int[]

{ 0, 1, 2, 3, 4, 5 };
int [] values = new int[] { 0, 1, 2, 3, 4, 5 }

;

SequentialAccessSparseVector vector;

@Before
public void setUp() {
vector = new SequentialAccessSparseVector(6);
for(int i = 0; i < Math.min(index.length, values.length); i++ )

{ vector.set(index[i], values[i]); }

}

@Test
public void testIteratorAll() {
int elements = 0;
Iterator<Element> it = vector.iterator();
while (it.hasNext())

{ System.out.println(it.next().get()); elements++; }
assertEquals((int)vector.get(Math.min(index.length,values.length)-1),values[Math.min(index.length, values.length)-1]);
assertEquals(Math.min(index.length, values.length),elements);
}

@Test
public void testIteratorNonNull() {
int elements = 0;
Iterator<Element> it = vector.iterateNonZero();
while (it.hasNext()) { System.out.println(it.next().get()); elements++; }

assertEquals((int)vector.get(Math.min(index.length,values.length)-1),values[Math.min(index.length, values.length)-1]);
assertEquals(Math.min(index.length,values.length),elements);
}