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Lost my pointer! (Posted on 2003-11-24) Difficulty: 3 of 5
You have a SINGLY linked list in memory of at least 1000 nodes (perhaps many more). I give you a pointer to ONE of the elements. (You don't know to which one.)

Upon examination, you discover that the pointer to the next node is not NULL (indicating that we're not at the last node in the list).

Your mission, should you decide to accept it, is to delete the current node, and maintain the valid linked list.

First, how do you go about doing that?

Second, how do you go about doing that in fixed space (i.e., you have only 64 bytes of memory as scratch space, so you can't replicate the rest of the linked list in memory, nor store more than 16 4-byte pointers)?

See The Solution Submitted by SilverKnight    
Rating: 2.0000 (5 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(3): Passed by (off topic....) Comment 16 of 16 |
(In reply to re(2): Passed by by SilverKnight)

Container classes? You lucky dog.....

I get to write in Python on rare occasions, and get to do some real work in C, but 95-98% of my work is in (gasp) FORTRAN. Not even Fortran90, but the 77 variety!
  Posted by Brian Wainscott on 2003-12-05 19:16:10

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