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Finding Tail Reference

Christopher Beech
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Joined: Feb 08, 2006
Posts: 40
How would you find the tail reference of a linked list???

I'm sure that you would need to do a traversal. The tail reference would be the last node where the reference would be null.

Not sure what code to put after the traversal. Also, this isn't for homework.
Peter Chase
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Joined: Oct 30, 2001
Posts: 1970
I'm too lazy to check this, but how about...

[ March 28, 2006: Message edited by: Peter Chase ]

Betty Rubble? Well, I would go with Betty... but I'd be thinking of Wilma.
Stan James
(instanceof Sidekick)
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Joined: Jan 29, 2003
Posts: 8791
Seems easier to read...

If you do this a lot and you can prove it's a bottleneck, can you modify your list to maintain a tail variable? I think that's fairly common.

A good question is never answered. It is not a bolt to be tightened into place but a seed to be planted and to bear more seed toward the hope of greening the landscape of the idea. John Ciardi
Rusty Shackleford
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Joined: Jan 03, 2006
Posts: 490
Yes, a tail reference in a linked list is common, and helps out performance a bit since a list is not random access.

If you don't/can't have one, traversing is your only option to get the data in the end of the linked list.
[ March 28, 2006: Message edited by: Rusty Shackleford ]

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