def test_isBalanced():
node1 = Node(24)
node2 = Node(15)
node3 = Node(36)
node4 = Node(11)
node5 = Node(17)
node1.left = node2
node1.right = node3
node2.left = node4
node2.right = node5
assert(isBalanced(node1) == True)
assert(isBalanced_better(node1) == True)
def test_isnotBalanced():
node1 = Node(24)
node2 = Node(15)
node3 = Node(36)
node4 = Node(48)
node5 = Node(54)
node6 = Node(77)
node1.left = node2
node1.right = node3
node3.right = node4
node4.right = node5
node5.right = node6
assert(isBalanced(node1) == False)
assert(isBalanced_better(node1) == False)