Cod sursa(job #1011175)

Utilizator romagiaroma gia romagia Data 16 octombrie 2013 14:00:55
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.79 kb
#include<iostream>
#include<fstream>
unsigned c[500000];
void merges(unsigned st, unsigned  dr, unsigned k[])
{
    if (st == dr)return;
    unsigned m = (st + dr) / 2;
    merges(st, m, k);
    merges(m + 1, dr, k);
    unsigned j=st,i=m+1,s=0;
    while (j <= m || i <= dr)
    {
        if (j > m){ c[s++] = k[i++]; continue; }
        if (i > dr){ c[s++] = k[j++]; continue; }
        if (k[j] > k[i])c[s++] =k[i++];
        else c[s++] =k[j++];
    }
    for (j = st, i = 0; i < s; i++, j++)k[j] = c[i];}
int main()
{
    unsigned  a[500000],n;
    std::ifstream f("algsort.in");
    f >> n;
    for (unsigned i = 0; i < n; i++)f >> a[i];
    f.close();
    merges(0,n-1,a);
    std::ofstream g("algsort.out");
    for (unsigned i = 0; i < n; i++)g<< a[i]<<" ";
    g.close();
}