C++

1. Given quicksort as follows, complete partition(int arr[], int low, int high){}. [10 points] void quickSort(int arr[], int low, int high)

{

if (low < high)

{

int pi = partition(arr, low, high);

quickSort(arr, low, pi - 1);

quickSort(arr, pi + 1, high);

}

}

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#include

using namespace std;

void swap(int* a, int* b)

{

int t = *a;

*a = *b;

*b = t;

}

int partition (int arr[], int low, int high)

{

//////////////////////////////////////

}

void quickSort(int arr[], int low, int high)

{

if (low < high)

{

int pi = partition(arr, low, high);

quickSort(arr, low, pi - 1);

quickSort(arr, pi + 1, high);

}

}

void printArray(int arr[], int size)

{

int i;

for (i=0; i < size; i++)

cout << arr[i] << " ";

cout << endl;

}

int main()

{

int arr[] = {10, 7, 8, 9, 1, 5};

int n = sizeof(arr)/sizeof(arr[0]);

quickSort(arr, 0, n-1);

cout << "Sorted array: " << endl;

printArray(arr, n);

return 0;

}