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Cod sursa(job #779669)
#include <time.h>
#include <stdio.h>
#include <fstream>
#include <algorithm>
#define NMax 500010
using namespace std;
const char IN[]="algsort.in",OUT[]="algsort.out";
ifstream fin(IN);
ofstream fout(OUT);
int N;
int v[NMax];
void sort(int ls,int ld){
if (ls>=ld) return;
int i,j;
swap(v[ls],v[rand()%(ld-ls+1)+ls]);
for (i=ls+1,j=ls;i<=ld;++i)
if (v[i]<=v[ls])
swap(v[i],v[++j]);
swap(v[j],v[ls]);
sort(ls,j-1);
sort(j+1,ld);
}
int main()
{
int i;
fin>>N;
for (i=1;i<=N;++i) fin>>v[i];
fin.close();
srand(time(NULL));
sort(1,N);
for (i=1;i<=N;++i)fout<<v[i]<<" "; fout<<"\n";
fout.close();
return 0;
}