#include <iostream>
#include <bits/stdc++.h>
using namespace std;

void quickSort(int arr[], int left, int right);

int main() {
    int arr[10] = {4, 923, 95, 382, 2903, 90, 37, 29, 637, 439};
    quickSort(arr, 0, 9);
    for (int i = 1; i <= 10; i++) {
        cout << "Index " << i < "= " << arr[i] << endl;
    }

}
void quickSort(int arr[], int left, int right) {
    int i = left;
    int j = right;
    int tmp;
    int pivot = arr[(left+right)/2];
    while (i <= j) {
        while (arr[i] > pivot) i++;
        while (arr[j] < pivot) j++;
        if (i <= j) {
            tmp = arr[i];
            arr[i] = arr[j];
            arr[j] = tmp;
            i++;
            j++;
        }
    }
    if (left < j) quickSort(arr, left, j);
    if (right > i) quickSort(arr, i, right);
}