Pagini recente » Cod sursa (job #787357) | Cod sursa (job #1705255) | Cod sursa (job #1225647) | Cod sursa (job #2341388) | Cod sursa (job #2174716)
#include <bits/stdc++.h>
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
int n,a[500001];
void part(int st, int dr, int &i, int &j)
{
int pivot = a[ rand() % (dr - st + 1) + st ];
i=st; j=dr;
while(true)
{
while(a[i] < pivot)
++i;
while(pivot < a[j])
--j;
if (i < j)
swap(a[i++], a[j--]);
else
return;
}
}
void Qsort(int st, int dr)
{
if(st>=dr)
return;
int i,j;
part(st,dr,i,j);
Qsort(st,i-1);
Qsort(j+1,dr);
}
int main()
{
f>>n;
for(int i=1;i<=n;i++)
f>>a[i];
Qsort(1,n);
for(int i=1;i<=n;i++)
g<<a[i]<<" ";
return 0;
}