Pagini recente » Cod sursa (job #2904999) | Cod sursa (job #1147026) | Cod sursa (job #370549) | Cod sursa (job #1041496) | Cod sursa (job #1825304)
#include <stdio.h>
#include <stdlib.h>
void swap(int *a,int *b)
{
int c;
c=*a;
*a=*b;
*b=c;
}
int randomized_partition(int *v,int p,int r)
{
int pivot_index = p + rand()%(r-p+1);
int pivot = v[pivot_index];
int i=p-1;
int j;
swap(&v[pivot_index],&v[r]);
for(j=p; j<r; ++j)
{
if(v[j]<pivot)
{
++i;
swap(&v[j],&v[i]);
}
}
swap(&v[i+1],&v[r]);
return i+1;
}
void randomized_quick_sort(int *v,int p,int r)
{
if(p<r)
{
int q = randomized_partition(v,p,r);
randomized_quick_sort(v,p,q-1);
randomized_quick_sort(v,q+1,r);
}
}
int main()
{
freopen("sortare.in","r",stdin);
freopen("sortare.out","w",stdout);
int n;
int *v;
int i;
scanf("%d",&n);
v = malloc(sizeof(int)*n);
for(i=0; i<n; ++i)
scanf("%d",&*(v+i));
randomized_quick_sort(v,0,n-1);
for(i=0; i<n; ++i)
printf("%d ",v[i]);
return 0;
}