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Cod sursa(job #626334)
#include <fstream>
#include <iostream>
using namespace std;
int n,arr[500000];
void quickSort( int left, int right) {
int i = left, j = right;
int tmp;
int pivot = arr[(left + right) / 2];
/* partition */
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--;
}
};
/* recursion */
if (left < j)
quickSort( left, j);
if (i < right)
quickSort( i, right);
}
int main()
{
ifstream fin("algsort.in");
fin>>n;
for (int i=0;i<n;i++)
{
fin>>arr[i];
}
fin.close();
quickSort(0,n);
ofstream fout("algsort.out");
for(int i=1;i<=n;i++){
fout<<arr[i]<<" ";
}
fout.close();
return 0;
}