Exercise

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
//CHU' Y' !!!!
namespace Mang1Chieu //mo^~i sinh vien viet code hoan chinh bai` nay` roi nop vao` dia chi email votandung@yahoo.com
{
    class Mang
    {
        private int[] a;
        private int n;

        public Mang()
        {
            n = 0;
            a = new int[n];
        }

        public Mang(int nn)
        {
            Random rd = new Random();
            n = nn;
            a = new int[n];
            for (int i = 0; i < n; i++)
            {
                a[i] = rd.Next(-10,10);
            }
        }

        public Mang(Mang arr)
        {
            n = arr.n;
            a = new int[n];
            for (int i = 0; i < n; i++)
            {
                a[i] = arr.a[i];
            }
        }

        public Mang(int []aa, int nn)
        {
            n = nn;
            a = new int[n];
            for (int i = 0; i < n; i++)
            {
                a[i] = aa[i];
            }
        }

        public override string ToString()
        {
            string s="[";
            for (int i = 0; i < n-1; i++)
            {
                s = s + a[i] + " ";
            }
            s = s + "]";
            return s;
        }
        public int N
        {
            get { return this.n; }
            set { if (value > 0) this.n = value; }
        }
        public int[] A
        {
            get { return this.a; }
            set { this.a = value; }
        }
        public Mang Cong(Mang arr)
        {
            Mang tam=new Mang();
            int n;
            if (this.N > arr.N)
                n = arr.n;
            else
                n = this.n;
            tam.N = n;
            for (int i = 0; i < n; i++)
                tam.a[i] = this.a[i] + arr.a[i];
            return tam; //phai sua lai cho dung
        }

        public Mang Cong(Mang arr1, Mang arr2)
        {
            Mang tam = new Mang();
            if (arr1.N > arr2.N)
                tam.N = arr2.N = arr1.N;
            else
                tam.N = arr1.N = arr2.N;
            for (int i = 0; i < tam.N; i++)
                tam.a[i] = arr1.A[i] + arr2.A[i];
            return tam; //phai sua lai cho dung
        }

        public int TimViTriMax()
        {
            int pos=0;
            for (int i = 0; i < this.n; i++)
                if (this.a[pos] < this.a[i])
                    pos = i;
            return pos;
        }

        public int TimViTriMax(Mang arr)
        {
            int pos = 0;
            for (int i = 0; i < arr.N; i++)
                if (arr.A[pos] < arr.A[i])
                    pos = i;
            return pos;
        }

        public int TongMang()
        {
            int sum=0;
            for (int i = 0; i < this.n; i++)
                sum += this.a[i];
            return sum;
        }

        public int TimViTriMin()
        {
            int pos = 0;
            for (int i = 0; i < this.n; i++)
                if (this.a[pos] > this.a[i])
                    pos = i;
            return pos;
        }

        public int TimViTriMin(Mang arr)
        {
            int pos = 0;
            for (int i = 0; i < arr.N; i++)
                if (arr.A[pos] > arr.A[i])
                    pos = i;
            return pos;
        }

        public int TongMang(Mang arr)
        {
            int sum = 0;
            for (int i = 0; i < arr.N; i++)
                sum += arr.A[i];
            return sum;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            Mang a, b, c;
            a = new Mang();
            b = new Mang(4);
            int[] p = { 1, 2, 3, 4, 5 };
            c = new Mang(p, 5);
            Console.WriteLine(b.Cong(c));
        }
    }
}