Pagini recente » Rating Lupicu (ard_procesoare) | Cod sursa (job #1283071) | Cod sursa (job #2704857) | Diferente pentru home intre reviziile 780 si 779 | Cod sursa (job #3241649)
#include <fstream>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int n,a[500009],b[500009];
void citire()
{
ios_base::sync_with_stdio(false);
fin>>n;
for(int i=1; i<=n; i++)
{
fin>>a[i];
}
}
void interclasare(int st, int dr)
{
int i,j,k,pmijl;
pmijl=(st+dr)/2;
i=st;
j=pmijl+1;
k=st;
while(i<=pmijl && j<=dr)
{
if(a[i]<a[j])
{
b[k++]=a[i++];
}
else
{
b[k++]=a[j++];
}
}
while(i<=pmijl)
{
b[k++]=a[i++];
}
while(j<=dr)
{
b[k++]=a[j++];
}
for(i=st; i<=dr; i++)
{
a[i]=b[i];
}
}
void Merge_Sort(int st, int dr)
{
int pmijl;
if(st<dr)
{
pmijl=(st+dr)/2;
Merge_Sort(st,pmijl);
Merge_Sort(pmijl+1,dr);
interclasare(st,dr);
}
}
void afisare()
{
for(int i=1; i<=n; i++)
{
fout<< a[i] << " ";
}
}
int main()
{
citire();
Merge_Sort(1,n);
afisare();
return 0;
}