Hi,
Can anybody help me in solving the following problem:
Convert a binary search tree in to a doubly linked list in level order
without using extra space :
BST
1
/ \
2 3
/ \ / \
4 5 6 7
in to double linked list as: 1==2==3==4==5==6==7
I can do it using level order traversal using a queue, but the problem says
no extra space should be used, I tried a lot but can't able to figure out.
Thanks,
M. Vamsee
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