gusucode.com > 《精通matlab 7》包括配套光盘 > 配套光盘里的程序附件/Ex-14/Ex1420.m
%例14-20 nnz和nzmax区别 S=sparse(rand(100)>0.98); nnz(S) nzmax(S) B=double(S); SS=B*B; nnz(SS) nzmax(SS) whos