6.3.4

    struct Participant
    {
        public string famile;
        public double result;
        public Participant(string famile, double result)
        {
            this.famile = famile;
            this.result = result;
        }
    }
    class Program
    {
        static void Down(Participant[] x)
        {
            for (int i = 0; i < x.Length - 1; i++)
            {
                double xmin = x[i].result;
                int imin = i;
                for (int j = i + 1; j < x.Length; j++)
                {
                    if (x[j].result < xmin)
                    {
                        xmin = x[j].result;
                        imin = j;
                    }
                }
                Participant temp;
                temp = x[imin];
                x[imin] = x[i];
                x[i] = temp;
            }
        }
        static void Main(string[] args)
        {
            Participant[] pc1 = new Participant[4];
            pc1[0] = new Participant("pukin", 5.48);
            pc1[1] = new Participant("vasin", 6.02);
            pc1[2] = new Participant("putin", 5.15);
            pc1[3] = new Participant("adolf", 4.44);
            Participant[] pc2 = new Participant[4];
            pc2[0] = new Participant("qwe", 6.23);
            pc2[1] = new Participant("rty", 5.53);
            pc2[2] = new Participant("asd", 4.49);
            pc2[3] = new Participant("fgh", 4.58);
            Down(pc1);
            Down(pc2);
            Participant[] pc = new Participant[pc1.Length + pc2.Length];
            int i = 0, j = 0;
            for (int l = 0; l < pc.Length; l++)
            {
                if (i >= pc1.Length)
                {
                    pc[l] = pc2[j];
                    j++;
                }
                else if (j >= pc2.Length)
                {
                    pc[l] = pc1[i];
                    i++;
                }
                else if (pc1[i].result < pc2[j].result)
                {
                    pc[l] = pc1[i];
                    i++;
                }
                else
                {
                    pc[l] = pc2[j];
                    j++;
                }
            }
            for (int k = 0; k < pc.Length; k++)
                WriteLine("famile is {0}\t" + "result is {1:f2}", pc[k].famile, pc[k].result);
        }