• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

Iterating over a (kind of) linked list

 
Greenhorn
Posts: 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi Everyone,

I am facing a small challenge that I'm hoping someone can help with. I have built a model of a city map that contains cities that each contain a list of other cities they are connected to, like this:



I am using the map to calculate routes that contain four, five or more cities. I am concerned that my method is not very efficient, it involves iterating over multiple arrays and 'moving' backwards and forwards over the map. My questions is whether there is an efficient way to calculate the route through 'n' cities, given 'n' can change.

Thanks in advance.
 
Sheriff
Posts: 22783
131
Eclipse IDE Spring VI Editor Chrome Java Windows
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Look up the traveling salesman problem. And no, it's not going to be efficient.
 
Marshal
Posts: 79177
377
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Welcome to the Ranch

That isn't called a linked list, more likely a "graph".
 
You learn how to close your eyes and tell yourself "this just isn't really happening to me." Tiny ad:
a bit of art, as a gift, that will fit in a stocking
https://gardener-gift.com
reply
    Bookmark Topic Watch Topic
  • New Topic