www.pudn.com > SA_TSP_Rev1.zip > distance.m

function d = distance(inputcities) 
% DISTANCE 
% d = DISTANCE(inputcities) calculates the distance between n cities as 
% required in a Traveling Salesman Problem. The input argument has two rows 
% and n columns, where n is the number of cities and each column represent 
% the coordinate of the corresponding city.  
 
d = 0; 
for n = 1 : length(inputcities) 
    if n == length(inputcities) 
        d = d + norm(inputcities(:,n) - inputcities(:,1)); 
    else     
        d = d + norm(inputcities(:,n) - inputcities(:,n+1)); 
    end 
end