Cod sursa(job #2540417)

Utilizator AlexPascu007Pascu Ionut Alexandru AlexPascu007 Data 7 februarie 2020 09:54:28
Problema Sortare prin comparare Scor 60
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.78 kb
#include <bits/stdc++.h>
#include <time.h>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int i,n,v[500010];
int poz(int st,int dr) {
    int dst=0, ddr=-1;
    int x=st+rand()%(dr-st+1);
    swap(v[x],v[st]);
    while (st<dr) {
        if (v[st]>v[dr]) {
            swap(v[st],v[dr]);
            int aux=dst;
            dst=-ddr;
            ddr=-aux;
        }
        st+=dst;
        dr+=ddr;
    }
    return st;
}
void sorteaza(int st,int dr) {
    if (st<dr) {
        int p=poz(st,dr);
        sorteaza(st,p-1);
        sorteaza(p+1,dr);
    }
}
int main() {
    fin>>n;
    for (i=1;i<=n;i++)
        fin>>v[i];
    srand(time(0));
    sorteaza(1,n);
    for (i=1;i<=n;i++)
        fout<<v[i]<<" ";
    return 0;
}