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Cod sursa(job #954946)
#include <fstream>
using namespace std;
int v[500001];
int aux[500001];
void schimba(int &x,int &y)
{
int aux=y;
y=x;
x=aux;
}
void m_sort(int st,int dr)
{
if(st==dr)
return;
else if((dr-st)==1)
{
if(v[st]>v[dr])
schimba(v[st],v[dr]);
}
else
{
int mijl=(st+dr)>>1;
m_sort(st,mijl);
m_sort(mijl+1,dr);
int i=st,j=mijl+1;
int poz=0;
while((i<=mijl) && (j<=dr))
if(v[i]<v[j])
aux[poz++]=v[i++];
else
aux[poz++]=v[j++];
while(i<=mijl)
aux[poz++]=v[i++];
while(j<=dr)
aux[poz++]=v[j++];
for(i=0;i<poz;i++)
v[st+i]=aux[i];
}
}
int main()
{
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int n,i;
fin>>n;
for(i=1;i<=n;i++)
fin>>v[i];
m_sort(1,n);
for(i=1;i<=n;i++)
fout<<v[i]<<' ';
fin.close();
fout.close();
return 0;
}