C#

We are tracking down our rogue agent and she travels from place to place to avoid being tracked. Each of her travels are based on a list of itineraries in an unusual or incorrect order. The task is to determine the complete route she will take.

You are given an array of routes containing her travel itineraries. Convert this into a complete, in-order list of the places she will travel.

Specification

Challenge.FindRoutes(routes)

Parameters

routes: Array - Array of itineraries

Return Value

string - An ordered list or destinations

Constraints

All inputs have at least one valid, complete route

Examples

routes

[["USA","BRA"],

["JPN","PHL"],

["BRA","UAE"],

["UAE","JPN"]]

Return Value

"USA, BRA, UAE, JPN, PHL"