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select N , IF(p is NULL, 'Root', IF(N in (select p from BST where p is not NUll), 'Inner','Leaf'))
from BST order by N;
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Binary Tree Nodes
You are viewing a single comment's thread. Return to all comments →
select N , IF(p is NULL, 'Root', IF(N in (select p from BST where p is not NUll), 'Inner','Leaf'))
from BST order by N;