Pagini recente » Cod sursa (job #676012) | Cod sursa (job #3214390) | Cod sursa (job #2333404) | Cod sursa (job #326522) | Cod sursa (job #2515416)
#include <bits/stdc++.h>
#define NMAX 500001
using namespace std;
ifstream f ("algsort.in");
ofstream g ("algsort.out");
FILE *fin = fopen("algsort.in","r");
FILE *fout = fopen("algsort.out","w");
int v[NMAX],n;
int pivot(int st,int dr)
{
swap(v[st],v[st + (dr - st)/2]);
int d = 0;
while(st < dr)
{
if(v[st] > v[dr])swap(v[st],v[dr]),d=1-d;
st+=d;
dr-= 1-d;
}
return st;
}
void quicksort(int st,int dr)
{
if(st < dr)
{
int p = pivot(st,dr);
quicksort(st,p-1);
quicksort(p+1,dr);
}
}
int imin(int nod,int k)
{
if(nod*2+1 > k)return nod * 2;
else
if(v[nod*2+1] > v[nod*2])return nod*2;
else return nod*2+1;
}
void cernere(int nod,int k)
{
if(nod <= k/2)
{
int i = imin(nod,k);
if(v[nod] > v[i])
{
swap(v[nod],v[i]);
cernere(i,k);
}
}
}
void heapify()
{
for(int i=n/2;i>=1;--i)cernere(i,n);
}
void heapsort()
{
heapify();
for(int i=n;i>1;--i)
{
swap(v[i],v[1]);
cernere(1,i-1);
}
}
void citire()
{
fscanf(fin,"%d",&n);
for(int i=1;i<=n;++i)
fscanf(fin,"%d",&v[i]);
heapsort();
for(int i=n;i>=1;--i)
fprintf(fout,"%d ",v[i]);
}
//void citire()
//{
// cin >> n;
// for(int i=1;i<=n;++i)cin >> v[i];
// heapsort();
// for(int i=n;i>=1;--i)cout << v[i] << ' ';
//}
int main()
{
citire();
return 0;
}