output=next(current_state,j,m,n)

%Copywrite Abhilash Harpale (c) 2009.
%This function generates the next state. 
function output=next(current_state,j,m,n)

state=floor((current_state-1)/n)+1;
state=[state;(current_state-(n*floor((current_state-1)/n)))];
j2=floor((j-1)/n)+1;
j2=[j2;(j-(n*floor((j-1)/n)))];
output=[];

for k=1:size(current_state,2)
    if(j2(1,1)<state(1,k) | j2(2,1)>state(2,k))
        output=[output state(:,k)];
    end
end
output=n*(output(1,:)-1)+output(2,:);
end