COMBINATOR -combinations AND permutations by Matt Fig

Returns 1 of 4 different samplings on the set 1:N, taken K at a time. (combinations, combinatorics, set)

combinator(N,K,s1,s2)

cumsumall.m

Next Combination/Permutation by Matt Fig

Produces one comb/perm at a time. Both with/without repetition. (combinations, permutations, combinatorics)

nextchoose(N,K)

nextmultichoose(N,K)

nextperm(N,K)

Picking elements from a set by Stefan Stoll

Gives all possibilities of picking k elements from a set of N with/without order/repetition. (ball picking, multichoose, combination)

pick(V,k,Type)