Bài 3 Tin

#include <iostream>
using namespace std;

int main()
{
    int arr[100];
    int n, i,j, temp, tv;
    cout << "Nhap so phan tu cua mang: ";
    cin >> n;
    for (i = 0; i < n; i++)
    {
        cout << "Nhap vao phan tu thu " << i+1 << " cua mang:";
        cin >> arr[i];
    }

    // Sap xep day tang dan
    for (i = 0; i < n-1; i++)
    {
        for (j = i + 1; j < n; j++)
        {
            if (arr[i] > arr[j])
            {
                temp = arr[i];
                arr[i] = arr[j];
                arr[j] = temp;
            }
        }
    }
    // Tim so trung vi
    if (n % 2 == 0)
    {
        int a = n / 2;
        int b = a + 1;
        tv = (arr[a] + arr[b]) / 2;
    }
    if (n % 2 == 1)
    {
        int c = (n + 1) / 2  -1;
        tv = arr[c];
    }
    cout << "Day so sap xep theo thu tu tang dan: " << endl;
    for (i = 0; i < n; i++)
    {
        cout << arr[i] << endl;
    }
    cout << "So trung vi la: " << tv << endl;
    system("pause");
    return 0;
}