Cod sursa(job #2906711)

Utilizator utilizator20052022utilizatorr utilizator20052022 Data 27 mai 2022 01:25:32
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.14 kb
#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

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

void merge(vector <int> &v, int left, int middle, int right)
{
    int i = left, j = middle + 1, k = 1;

    vector <int> aux;

    while(j <= right && i <= middle){
        if(v[j] > v[i]){
            aux.push_back(v[i++]);
        }
        else{
            aux.push_back(v[j++]);
        }
    }

    while(i <= middle){
        aux.push_back(v[i++]);
    }
    while(j <= right){
        aux.push_back(v[j++]);
    }

    for(i = left; i <= right; i++){
        v[i] = aux[i-left];
    }

}

void merge_sort(vector <int> &v, int left, int right)
{
    if(right > left){
        int middle = (left + right) / 2;
        merge_sort(v, left, middle);
        merge_sort(v, middle + 1, right);

        merge(v, left, middle, right);
    }
}

int main(){
    int N,x;
    
    vector<int> v;

    fin>>N;
    for(int i = 0; i < N; ++i){
        fin>>x;
        v.push_back(x);
    }

    merge_sort(v, 0, v.size()-1);
    for(auto nr: v) fout<<nr<<' ';
    return 0;
}