Meta interview question
Make a binary tree in order iterator
Interview Answer
Anonymous
Oct 8, 2016
Use a stack, each point add left node till you see a null, at each pop, add the right node of the popped node and recurse left.
Make a binary tree in order iterator
Anonymous
Use a stack, each point add left node till you see a null, at each pop, add the right node of the popped node and recurse left.
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