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Cod sursa(job #826724)
#include <fstream>
using namespace std;
const char InFile[]="algsort.in";
const char OutFile[]="algsort.out";
const int MaxN=500111;
ifstream fin(InFile);
ofstream fout(OutFile);
int n,v[MaxN],buffer[MaxN],L,dr2,i;
void radix_sort(int st, int dr)
{
if(st>=dr)
{
return;
}
if(L<0)
{
return;
}
int st2=st-1;
dr2=dr;
for(i=st;i<=dr;++i)
{
if(((v[i]>>L)&1)==0)
{
buffer[++st2]=v[i];
}
else
{
buffer[dr2--]=v[i];
}
}
for(i=st;i<=dr;++i)
{
v[i]=buffer[i];
}
--L;
radix_sort(st,st2);
radix_sort(st2+1,dr);
++L;
}
int main()
{
fin>>n;
for(register int i=1;i<=n;++i)
{
fin>>v[i];
}
fin.close();
L=30;
radix_sort(1,n);
for(register int i=1;i<=n;++i)
{
fout<<v[i]<<" ";
}
fout.close();
return 0;
}