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thats a invalid scenario, with this loop, one will never be able to reach to the destination.
- lazy.coder September 08, 2015A->B, B->C, C->F, F->B....now what? how traveler is expected to complete the journey?
i hope that, there was a reason to use the "Flight boarding scenario"....from the question it looks like person was more interested in knowing how will this be implemented using JAVA Script (no hash table, no fancy DSs)