Title: Efficient Iterator for Permutations and Combinations
Description: It helps in 1) generating permutations and combinations with or without replacement; 2) with distinct items or non-distinct items (multiset); 3) calculating number of combinations or permutations in various situations. All generated sequences are in lexicographical order (AKA, dictionary order). The algorithms to generate permutations and combinations are memory efficient. These iterative algorithms enable users to process all sequences without putting all results in the memory at the same time.  The algorithms are written in C/C++ for faster performances.

Description: It helps in 1) generating permutations and combinations with or
without replacement; 2) with distinct items or non-distinct items (multiset);
3) calculating number of combinations or permutations in various situations. All
generated sequences are in lexicographical order (AKA, dictionary order). The
algorithms to generate permutations and combinations are memory efficient. These
iterative algorithms enable users to process all sequences without putting all
results in the memory at the same time. The algorithms are written in C/C++ for
Imports: iterators, Rcpp (>= 0.11.0), polynom

Description: A collection of iterators for generating permutations and combinations with or
without replacement; with distinct items or non-distinct items (multiset).
The generated sequences are in lexicographical order (dictionary order). The

Imports: iterators, gmp (>= 0.5-12), Rcpp (>= 0.11.0)

Title: Efficient Iterators for Permutations and Combinations
person("Martin", "Broadhurst", role = "aut")

Description: Iterator for generating permutations and combinations. They
can be either drawn with or without replacement, or with distinct/ non-distinct
items (multiset). The generated sequences are in lexicographical order
(dictionary order). The algorithms to generate permutations and combinations are
memory efficient. These iterative algorithms enable users to process all sequences
without putting all results in the memory at the same time.
The algorithms are written in C/C++ for faster performance.