isempty

PURPOSE

SYNOPSIS

DESCRIPTION

 isempty(p) --- check if the permutation p is of size 0

CROSS-REFERENCE INFORMATION

• size size(p) returns the number of elements permuted and the number of cycles.

• display display(p) --- display a permutation in disjoint cycle form.

SOURCE CODE

0001 function yn = isempty(p)
0002 % isempty(p) --- check if the permutation p is of size 0
0003 s = size(p);
0004 yn = s(1)==0;