% 查找含有inf的行号
inf_id = [];
for ni = 1:size(a,1)
    if length(find(a(ni,:) == inf)) ~= 0
        inf_id = [inf_id ni];
    end
end
% 删除
a(inf_id,:) = [];

a(find(a(:,:) == inf)) = 0

a(find(sum(abs(a\')) == inf), :) = [];