Pagini recente » Cod sursa (job #756798) | Cod sursa (job #3191619) | Cod sursa (job #1587936) | Cod sursa (job #358693) | Cod sursa (job #2861890)
#include <fstream>
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
void mergesort(int a[],int st,int dr)
{
if(st==dr)
return;
int m=(st+dr)/2;
mergesort(a,st,m);
mergesort(a,m+1,dr);
int tmp[dr-st+2],i=st,j=m+1,k=0;
while(i<=m && j<=dr)
if(a[i]<a[j])
tmp[++k]=a[i++];
else
tmp[++k]=a[j++];
while(i<=m)
tmp[++k]=a[i++];
while(j<=dr)
tmp[++k]=a[j++];
for(i=st,j=1;i<=dr;i++,j++)
a[i]=tmp[j];
}
int n,i,a[500011];
int main()
{
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
mergesort(a,1,n);
for(i=1;i<=n;i++)
g<<a[i]<<" ";
return 0;
}