Pagini recente » Cod sursa (job #1726225) | Cod sursa (job #2856535) | Cod sursa (job #2169190) | Cod sursa (job #1043908) | Cod sursa (job #1077550)
#include <iostream>
#include <fstream>
using namespace std;
int a[50000],n;
void merge(int p,int q,int r)
{
int i=p,j=q+1,k=0,c[500000];
while((i<=q)&&(j<=r))
{
if(a[i]<a[j])
{
c[k]=a[i];
k++;
i++;
}
else
{
c[k]=a[j];
k++;
j++;
}
}
while(i<=q)
{
c[k]=a[i];
k++;
i++;
}
while(j<=r)
{
c[k]=a[j];
k++;
j++;
}
i=0;
while(i<k)
{
a[i]=c[i];
i++;
}
}
void mergesort(int p,int r)
{
if(p<r)
{
int q=(p+r)/2;
mergesort(p,q);
mergesort(q+1,r);
merge(p,q,r);
}
}
int main()
{
int i,p=0,r;
ifstream f("algsort.in");
ofstream g("algsort.out");
f>>n;
r=n-1;
for(i=0;i<n;i++)
f>>a[i];
if(n==1)
g<<a[0];
else
{
mergesort(p,r);
for(i=0;i<n;i++)
g<<a[i]<<" ";
}
f.close();
g.close();
return 0;
}