๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

A Gray Code for Combinations of a Multiset

โœ Scribed by Frank Ruskey; Carla D. Savage


Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
267 KB
Volume
17
Category
Article
ISSN
0195-6698

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


A Gray Code for the Ideals of a Forest P
โœ Y. Koda; F. Ruskey ๐Ÿ“‚ Article ๐Ÿ“… 1993 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 707 KB

We present two algorithms for listing all the ideals of a forest poset. These algorithms generate ideals in a gray code manner; that is, consecutive ideals differ by exactly one element. Both algorithms use storage \(O(n)\), where \(n\) is the number of elements in the poset. On each iteration, the

A Loopless Gray-Code Algorithm for Listi
โœ Dominique Roelants van Baronaigien ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 91 KB

The bit sequence representation for k-ary trees is a sequence b , b , . . . , b of bits that is formed by doing a preorder traversal of the k-ary tree and writing a 1 when the visited subtree is not empty and a zero when the visited subtree is empty. The representation is well known and in the cas

A Good Method of Combining Codes
โœ Robert Calderbank ๐Ÿ“‚ Article ๐Ÿ“… 1980 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 424 KB
Gray Codes for the Ideals of Interval Or
โœ Michel Habib; Lhouari Nourine; George Steiner ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 218 KB

The generation of combinatorial objects in a Gray code manner means that the difference between successive objects is small, e.g., one element for subsets or one transposition for permutations of a set. The existence of such Gray codes is often equivalent to an appropriately defined graph on these o

An extremal problem for antichains of su
โœ G.F. Clements ๐Ÿ“‚ Article ๐Ÿ“… 1987 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 850 KB

A multiset M is a finite set consisting of several different kinds of elements, and an antichain F is a set of incomparable subsets of M. With P and \_F denoting respectively the set of subsets which contain an element of F or are contained in an element of F, we find the best upper bound for min(lF