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Communications of the ACM

Communications of the ACM

A nonrecursive list moving algorithm

An efficient, nonrecursive algorithm is given for moving any LISP-type list. In particular, the algorithm requires no storage other than the new nodes into which the lists is to be moved, and no additional bits per node for marking; the algorithm runs in time proportional to the number of nodes in the list. The original list structure is destroyed as it is moved.

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