Cod sursa(job #1005984)

Utilizator alabala1vali smerica alabala1 Data 6 octombrie 2013 02:16:14
Problema Sortare prin comparare Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.74 kb
#include<iostream>
#include<fstream>
void merges(unsigned st, unsigned  dr, unsigned *p)
{
	if (st == dr)return;
	unsigned m = (st + dr) / 2;
	merges(st, m, p);
	merges(m + 1, dr, p);
	unsigned c[500000]={0},j=st,i=m+1,s=0;
	while (j <= m || i <= dr)
	{
		if (j > m){ c[s++] = *(p + i++); continue; }
		if (i > dr){ c[s++] = *(p + j++); continue; }
		if (*(p + j) > *(p + i))c[s++] = *(p + i++);
		else c[s++] = *(p + j++);
	}
	for (j = st, i = 0; i < s; i++, j++)*(p + 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();
}