private static void xuat(MangSoNguyen a)
{
for (int i = 0; i < a.MangNGuyen.Length; i++)
{
Console.WriteLine("a[{0}] = {1}", i, a.MangNGuyen[i]);
}
}
public int tongMang(MangSoNguyen arr)
{
var kq = 0;
foreach (int a in arr.MangNGuyen)
{
kq += a;
}
return(kq);
}
static void Main(string[] args)
{
MangSoNguyen nguyen = new MangSoNguyen();
ConsoleKey key;
do
{
menu();
Choose(nguyen, out key);
} while (key != ConsoleKey.X);
}
public int max(MangSoNguyen arr)
{
int Somax = arr.MangNGuyen[0];
for (int i = 1; i < arr.MangNGuyen.Length; i++)
{
if (Somax < arr.MangNGuyen[i])
{
Somax = arr.MangNGuyen[i];
}
}
return(Somax);
}
public int tongLe(MangSoNguyen arr)
{
var kq = 0;
foreach (int a in arr.MangNGuyen)
{
if (a % 2 != 0)
{
kq += a;
}
}
return(kq);
}
private static void nhap(MangSoNguyen a)
{
Console.WriteLine("nhap so phan tu cua mang:");
int n = int.Parse(Console.ReadLine());
a.MangNGuyen = new int[n];
Console.WriteLine("mang co gia tri ngau nhien tu 10-100 da duoc tao");
Random rand = new Random();
for (int i = 0; i < n; i++)
{
a.MangNGuyen[i] = rand.Next(10, 100);
}
}
public void giamDan(MangSoNguyen arr)
{
for (int i = 0; i < arr.MangNGuyen.Length - 1; i++)
{
for (int j = i + 1; j < arr.MangNGuyen.Length; j++)
{
if (arr.MangNGuyen[j] > arr.MangNGuyen[i])
{
int tam = arr.MangNGuyen[i];
arr.MangNGuyen[i] = arr.MangNGuyen[j];
arr.MangNGuyen[j] = tam;
}
}
}
}
private static void Choose(MangSoNguyen a, out ConsoleKey key)
{
key = Console.ReadKey(false).Key;
Console.WriteLine();
switch (key)
{
case ConsoleKey.D1:
nhap(a);
break;
case ConsoleKey.D2:
xuat(a);
break;
case ConsoleKey.D3:
Console.WriteLine("Tong cac gia tri cac phan tu trong mang la: {0}", a.tongMang(a));
break;
case ConsoleKey.D4:
Console.WriteLine("Tong cac phan tu co gia tri la so le la: {0}", a.tongLe(a));
break;
case ConsoleKey.D5:
Console.WriteLine("gia tri cac phan tu trong mang da duoc sap xep tang dan");
a.tangDan(a);
break;
case ConsoleKey.D6:
Console.WriteLine("gia tri cac phan tu trong mang da duoc sap xep giam dan");
a.giamDan(a);
break;
case ConsoleKey.D7:
Console.WriteLine("Gia tri lon nhat trong mang la: {0}", a.max(a));
break;
case ConsoleKey.X:
Console.WriteLine("CAM ON DA THOAT!!");
break;
default:
Console.WriteLine("chi duoc nhap tu 1-7 va x de thoat");
break;
}
Console.ReadKey(); //stop man hinh de xem ket qua
Console.Clear(); //xoa man hinh
}
public void tangDan(MangSoNguyen arr)
{
Array.Sort(arr.MangNGuyen);
}
