Cod sursa(job #3253938)

Utilizator nicushor21Pirlog Marian Nicolae nicushor21 Data 5 noiembrie 2024 14:50:43
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.75 kb
#include <bits/stdc++.h>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int n,v[500001];

void quicksort(int st, int dr){
    if(st>=dr)
        return;

    int cnt=st,egal=0;
    for(int i=st;i<dr;i++){
        if(v[i]<v[dr]){
            swap(v[i],v[cnt++]);
        }
    }
    for(int i=cnt;i<dr;i++){
        if(v[i]==v[dr]){
            swap(v[i],v[cnt++]);
            egal++;
        }
    }
    swap(v[cnt],v[dr]);
    quicksort(st, cnt-egal-1);
    quicksort(cnt+1, dr);
}

int main()
{
    fin>>n;
    for(int i=1;i<=n;i++)
        fin>>v[i];
    shuffle(v+1,v+n+1,default_random_engine(time(0)));
    quicksort(1,n);
    for(int i=1;i<=n;i++)
        fout<<v[i]<<' ';
    return 0;
}