Computer Science – Data Structures and Algorithms
Scientific paper
2004-04-30
Lecture Notes in Computer Science 2635 (2004), 183--204
Computer Science
Data Structures and Algorithms
Scientific paper
We study an interesting family of cooperating coroutines, which is able to generate all patterns of bits that satisfy certain fairly general ordering constraints, changing only one bit at a time. (More precisely, the directed graph of constraints is required to be cycle-free when it is regarded as an undirected graph.) If the coroutines are implemented carefully, they yield an algorithm that needs only a bounded amount of computation per bit change, thereby solving an open problem in the field of combinatorial pattern generation.
Knuth Donald E.
Ruskey Frank
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