When building heap, is heap unique?

Question

I\'m studying heap & heap sorting.
There is a array : arr[8] = {6,9,3,1,8,7,2,11}
When I\'m trying to build the heap, using code and pencil, I face

Answer 1

That's correct. The heap constraint (which is that children are not greater than their parents) does not completely specify the heap, so there is usually more than one possible arrangement.