using System;

public class Program

{

    public static void Main()

    {

        int[] _asteroidPathsArray = new int[5];

        //int[] _asteroidPathsArray = new int[5] {-1,-1,-1,-1,-1};

        for (int i = 0; i < _asteroidPathsArray.Length; i++)

        {

            int path = GetRandom(0, 5);

            while(System.Array.IndexOf(_asteroidPathsArray, path) >= 0)

            {

                path = GetRandom(0, 5);

            }

            Console.WriteLine("i:" + i + " path:" + path);

            _asteroidPathsArray[i] = path;

        }

    }

    static Random r = new Random();

    public static int GetRandom(int start, int end) {

        return r.Next(start, end); //for ints

    }

}