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Cod sursa(job #927864)
#include <fstream>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
void quicksort(int *a,int inf, int sup);
int a[500000];
int main()
{
int n;
fin>>n;
for (int i = 0; i<= n-1; i++)
fin>>a[i];
quicksort(a,0,n-1);
for(int i = 0; i<=n-1;i++)
fout<<a[i]<<" ";
return 0;
}
void quicksort(int *a, int inf, int sup)
{
if (inf<sup)
{
int pivot = a[inf];
int aux;
int i = inf+1;
int j = sup;
while (i<=j)
{
while((i<=sup) && (a[i] <=pivot))
i++;
while((j>=inf) && (a[j]>pivot))
j--;
if ((i<j) && (i<=sup) && (j>=inf))
{
aux = a[i];
a[i] = a[j];
a[j] = aux;
i++;
j--;
}
}
i--;
a[inf] = a[i];
a[i] = pivot;
quicksort(a,inf,i-1);
quicksort(a,i+1,sup);
}
}