Generating integer compositions.
By default, the compositions of each integer are listed in the lexicographic order.
Command line arguments (all of them are optional):
- an integer number n: get the compositions for the numbers from 0 to n (the default is 6);
colex: reverse each composition after ordering (i. e., use the colexicographic order instead);reverse: reverse the lexicographic ordering;len+/len-: group the compositions by length and order the groups by increasing/decreasing length;-1: subtract 1 from each term (this allows listing all tuples of nonnegative integers);flat: instead of pretty formatting, output all terms in one line, like in the OEIS.
On Windows, compile with --features clip to put the "flat" output to the clipboard. This adds dependencies.
The pretty output of cargo run 4 looks like this:
[[]]
[[1]]
[[1, 1], [2]]
[[1, 1, 1], [1, 2], [2, 1], [3]]
[[1, 1, 1, 1], [1, 1, 2], [1, 2, 1], [1, 3], [2, 1, 1], [2, 2], [3, 1], [4]]
OEIS sequences for the compositions and the corresponding command line arguments:
- A228369: (no arguments)
- A228525:
colex - A066099:
reverse - A108730:
reverse -1 - A228351:
reverse colex - A163510:
reverse colex -1 - A124734:
len+ - A124735:
len+ -1 - A337243:
len+ colex - A296774:
len+ reverse - A337259:
len+ reverse colex - A296773:
len- - A337260:
len- colex - A296772:
len- reverse - A108244:
len- reverse colex
The content of this repository is licensed under Apache License 2.0 or CC BY 4.0 at your option.