Cod sursa(job #2592723)

Utilizator GligarEsterabadeyan Hadi Gligar Data 2 aprilie 2020 11:05:08
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.98 kb
#include <fstream>

using namespace std;

ifstream fin("algsort.in");
ofstream fout("algsort.out");

const int nmax=500000;

int v[nmax+1];
int v_aux[nmax+1];

void merge_sort(int x,int y){
    if(x<y){
        int mid=(x+y)/2;
        merge_sort(x,mid);
        merge_sort(mid+1,y);
        int i=x,j=mid+1;
        for(int k=x;k<=y;++k){
            if(i>mid){
                v_aux[k]=v[j];
                ++j;
            }else if(j>y){
                v_aux[k]=v[i];
                ++i;
            }else if(v[i]<=v[j]){
                v_aux[k]=v[i];
                ++i;
            }else{
                v_aux[k]=v[j];
                ++j;
            }
        }
        for(int k=x;k<=y;++k){
            v[k]=v_aux[k];
        }
    }
}

int main(){
    int n;
    fin>>n;
    for(int i=1;i<=n;++i){
        fin>>v[i];
    }
    merge_sort(1,n);
    for(int i=1;i<=n;i++){
        fout<<v[i]<<" ";
    }
    fout<<"\n";
    return 0;
}