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MonomialAlgebras :: nextSubset

nextSubset -- Iterator to produce subsets.

Synopsis

Usage:
nextSubset(L,n)
Inputs:
- L, a list, of strictly increasing integers <=n
- n, an integer, positive If all subsets have been produced the function returns the Boolean true.
Outputs:
- a list

Description

Iterator to produce inductively all subsets of 0,...,n starting with L={}.

i1 : L={}

o1 = {}

o1 : List

i2 : while class(L)=!=Boolean do (L=nextSubset(L,3);print L)
{0}
{1}
{2}
{3}
{0, 1}
{0, 2}
{0, 3}
{1, 2}
{1, 3}
{2, 3}
{0, 1, 2}
{0, 1, 3}
{0, 2, 3}
{1, 2, 3}
{0, 1, 2, 3}
true

Ways to use `nextSubset` :

nextSubset(List,ZZ)