@Override
public Array<T> slice(long beginIndex, long endIndex) {
if (beginIndex >= endIndex || beginIndex >= length() || isEmpty()) {
return empty();
}
if (beginIndex <= 0 && endIndex >= length()) {
return this;
}
final int index = Math.max((int) beginIndex, 0);
final int length = Math.min((int) endIndex, length()) - index;
final Object[] arr = new Object[length];
System.arraycopy(delegate, index, arr, 0, length);
return wrap(arr);
}
@Override
public Array<Array<T>> combinations(int k) {
return Combinations.apply(this, Math.max(k, 0));
}