[algogeeks] find out the mid point of a single linked list

2010-09-28 Thread Divesh Dixit
Given a singly-linked, find out (just give the basic logic) the mid
point of a single linked list in a single parse of the list. Assume
the program would be loaded in read-only memory so no manipulation of
the list is allowed.

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Re: [algogeeks] find out the mid point of a single linked list

2010-09-28 Thread Prashant Kulkarni
maintain two pointer

1) slow pointer : it will point to next node for each iteration (ie
node=node-next)
2) fast pointer : it will point to two ahead node for each iteration ( ie
node=node-next-next)

when fast pointer reaches the end of linked list (NULL), slow pionter will
point to middle of the linked list

-- Prashant Kulkarni




On Tue, Sep 28, 2010 at 10:54 PM, Divesh Dixit 
dixit.coolfrog.div...@gmail.com wrote:

 Given a singly-linked, find out (just give the basic logic) the mid
 point of a single linked list in a single parse of the list. Assume
 the program would be loaded in read-only memory so no manipulation of
 the list is allowed.

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