Usually the task of finding ways to graph is formulated as follows: find the best route. Under the best route is usually understood as soon as possible. Find the shortest route possible choice of all detected. However, it is not necessary to search all routes. 

You can do anything else: when selecting the next point to check, will not exceed a length formed by the route length has found the way, if this point would be included in the itinerary, and if exceeds, that this point should skip it and choose another. 

Thus, after the first route is found, the program will search only for those branches of the graph, which can improve the solution found by cutting off the path, making the route longer than the already generated hits. 

The following listing shows the procedure that uses a procedure step, by selecting the next point of the route in such a way that provides a search path of minimum length.

It so happened that in the modern world the way a man almost every minute. Therefore, gps navigators have good assistants, the people who know how to appreciate their time. 
Whether we like it or not, but gps navigators are becoming an integral part of our lives. It should be noted that the gps navigators are very easy to use and understandable even to a child. 
I think that the GPS-navigators have a decent replacement for standard cards; in addition, they can point to show your location, find the shortest route from departure to the place of arrival to notify rejection of the planned route, the passage of the intermediate points, or on arrival at their destination. 

But I want to note that the selection of GPS-navigator not a simple task, because before you buy it you need to decide in what order you will use it. 
So I think that the navigation device to acquire the best in specialist shops. With one of these I want to introduce you. 

Is remarkable that almost in every part and in everything of your life you are seeking for shortest directions. When someone is faced to the problem no matter what kind of problem is that, at first what he or she does is tries to find a shortest direction to solve the problem. To be noted not always are the shortest directions the best choice, they can be dangerous, wrong or simply not satisfying.