Pagini recente » Cod sursa (job #2235397) | Cod sursa (job #1796972) | Cod sursa (job #2002795) | Cod sursa (job #2405868) | Cod sursa (job #2238169)
#include<cstdio>
#include<fstream>
using namespace std;
FILE *f=fopen("algsort.in","r");
ofstream g("algsort.out");
int v[500002],w[500002];
void merge_sort(int st,int dr)
{
if(st!=dr)
{
int i,j,k=0,mij=(st+dr)/2;
merge_sort(st,mij);
merge_sort(mij+1,dr);
i=st;
j=mij+1;
while(i<=mij&&j<=dr)
{
if(v[i]<=v[j])
{
w[++k]=v[i];
i++;
}
else
{
w[++k]=v[j];
j++;
}
}
if(i<=mij)
{
for(j=i;j<=mij;j++)
w[++k]=v[j];
}
else
{
for(i=j;i<=dr;i++)
w[++k]=v[i];
}
for(i=st;i<=dr;i++)
v[i]=w[i-st+1];
}
}
int main()
{
int n,i;
fscanf(f,"%d",&n);
for(i=1;i<=n;i++)
fscanf(f,"%d",&v[i]);
merge_sort(1,n);
for(i=1;i<=n;i++)
g<<v[i]<<" ";
return 0;
}