What I can think
  is case is :

      10
     / \
    6     13
   / \
  4   5
 / \   \
6   7   8
   / \   \
  9   a   b

   so from a->b is
 a->7->4->2->5->8->b

 1-> Left Tree then
 2-> Right Tree
 add them

On Sat, Jun 23, 2012 at 3:49 PM, Kumar Vishal <kumar...@gmail.com> wrote:

>   What I can think
>   is case is :
>
> 1
>      / \
>     2   3
>    / \
>   4   5
>  / \   \
> 6   7   8
>    / \   \
>   9   a   b
>
>    so from a->b is
>  a->7->4->2->5->8->b
>
>
>
> On Sat, Jun 23, 2012 at 2:44 PM, Avinash <jain.av...@gmail.com> wrote:
>
>> Some how I found that we need to run bfs twice to get the largest
>> distance between any two nodes of a tree. Please explain me how it works.
>> regards,
>> avinash
>>
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>
>
>
> --
> Regards
> Kumar Vishal
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Kumar Vishal
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