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5
- Novice Coder February 01, 2012/ \
2 8
/ \ / \
-4 4 6 9
input :
Root node: 5
search node: 8
Distance (K): 1
output : 5, 6, 9
if k is 3 then output should be -4 and 4 respectively, the problem i feel is how to navigate upwards considering that we do not have reference to parent node.