java - Find available routes inside collection of location

Question

I have a list of object something like this:

[
    { location= station a, routes= [R1, R2, R3] }, 
    { location= station b, routes= [R1, R2] }, 
    { location= station c, routes= [R1] }
]

This represents routes (R1, R2... Rn) from each location (loc1 ...n). My problem is I want to identify a direct route, meaning from the station a to station c they should be the same, for this case = R1.

At the same time, I want to know also what is the intersection routes. for this example = R2 at station b.

Looking forward to solving this in Java.

question from:https://stackoverflow.com/questions/65920978/find-available-routes-inside-collection-of-location

Answer 1

Waitting for answers