Cod sursa(job #1239676)

Utilizator mariusn01Marius Nicoli mariusn01 Data 9 octombrie 2014 16:20:58
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.99 kb
#include <fstream>

using namespace std;

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

int v[500010], w[500010];
int n, i;

void interclaseaza(int st, int m, int dr) {
    int i = st;
    int j = m+1;
    int k = st-1;
    while (i<=m && j<=dr)
        if (v[i]<v[j])
            w[++k] = v[i++];
        else
            w[++k] = v[j++];
    for (;i<=m;i++)
        w[++k] = v[i];
    for (;j<=dr;j++)
        w[++k] = v[j];
    for (i=st;i<=dr;i++)
        v[i] = w[i];
}

void sorteaza(int st, int dr) {
    if (st < dr) {
        int m = (st+dr)/2;
        sorteaza(st, m);
        sorteaza(m+1, dr);
        interclaseaza(st, m, dr);
        // functia pri,este sortata secventa din v de la st la m si tot sortata secventa din v de la m+1 la dr si le interclaseaza in v in aceeasi zona st,dr
    }
}

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