Pagini recente » Cod sursa (job #1893250) | Cod sursa (job #3005476) | Cod sursa (job #461335) | Cod sursa (job #1693444) | Cod sursa (job #1028836)
#include <iostream>
using namespace std;
ifstream in("algsort.in");
ofstream out("algsort.out");
long a[500000],b[500000];
int n;
void merge(int st,int m,int dr)
{
int i,j,k=1;
i = st;
j = m + 1;
while(i <= m && j <= dr)
{
if(a[i] < a[j])
{
b[k] = a[i];
k++;
i++;
}
else
{
b[k] = a[j];
k++;
j++;
}
}
while(i <= m)
{
b[k] = a[i];
k++;
i++;
}
while(j <= dr)
{
b[k] = a[j];
k++;
j++;
}
k--;
for(i = dr ; i >= st ; i--)
{
a[i] = b[k];
k--;
}
}
void mergesort(int st,int dr)
{
int m;
if(st < dr)
{
m = (st+dr)/2;
mergesort(st,m);
mergesort(m+1,dr);
merge(st,m,dr);
}
}
int main()
{
int i;
in >> n;
for(i = 1 ; i <= n ; i++)
in >> a[i];
mergesort(1,n);
for(i = 1 ; i <= n ; i++)
out << a[i] << " ";
return 0;
}