Cod sursa(job #2939911)

Utilizator PsyDuck1914Feraru Rares-Serban PsyDuck1914 Data 14 noiembrie 2022 13:41:30
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.83 kb
#include <fstream>
#include <iostream>

using namespace std;

ifstream f ("algsort.in");
ofstream g ("algsort.out");

const int NMAX = 5e5;
int v[NMAX+1], aux[NMAX+1];

void interclasare(int st, int dr){
    int m = (st+dr)/2;
    int i=st, j=m+1, k=st;
    while(i<=m and j<=dr){
        if(v[i] <= v[j])
            aux[k] = v[i], k++,  i++;
        else aux[k] = v[j], k++,  j++;
    }
    while(i<= m)
        aux[k] = v[i], k++, i++;
    while(j<=dr)
        aux[k] = v[j], k++, j++;
    for(int i=st; i<=dr; i++)
        v[i] = aux[i];        
}

void ms(int st, int dr){
    if(st == dr)
        return;
    int m = (st+dr)/2;
    ms(st, m);
    ms(m+1, dr);
    interclasare(st, dr);
}

int main()
{
    int n;
    f>>n;
    for(int i=1; i<=n; i++)
        f>>v[i];
    ms(1, n);
    for(int i=1; i<=n; i++)
        g<<v[i]<<' ';

    return 0;
}