Data:    4 2 7 3 1 0 5 6
Indices: 0 1 2 3 4 5 6 7

- heapify(3)

Data:    4 2 7 6 1 0 5 3
Indices: 0 1 2 3 4 5 6 7

- heapify(2)

Data:    4 2 7 6 1 0 5 3
Indices: 0 1 2 3 4 5 6 7

- heapify(1)

Data:    4 6 7 3 1 0 5 2
Indices: 0 1 2 3 4 5 6 7

- heapify(0)

Data:    7 6 5 3 1 0 4 2
Indices: 0 1 2 3 4 5 6 7


-------------------------------
In tree form:

       4
     /   \
    2     7
   / \   / \
  3   1 0   5
 /
6

- heapify(node(3))

       4
     /   \
    2     7
   / \   / \
  6   1 0   5
 /
3

- heapify(node(7))
       4
     /   \
    2     7
   / \   / \
  6   1 0   5
 /
3

- heapify(node(2))

       4
     /   \
    6     7
   / \   / \
  3   1 0   5
 /
2

- heapify(node(4))

       7
     /   \
    6     5
   / \   / \
  3   1 0   4
 /
2