Cod sursa(job #1894606)

Utilizator TamasFlorin96Tamas Florin TamasFlorin96 Data 26 februarie 2017 23:31:20
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.09 kb
#include <vector>
#include <fstream>

template<typename T>
void merge(std::vector<T> &vec,int left,int right) 
{
	std::vector<T> temp;

	int mid = left + (right-left) / 2;
	int i = left, j = mid+1;

	while (i <= mid && j <= right)
		temp.push_back(vec[i] < vec[j] ? vec[i++] : vec[j++]);

	while (i <= mid)
		temp.push_back(vec[i++]);

	while (j <= right)
		temp.push_back(vec[j++]);

	for (size_t i = 0; i < temp.size(); i++)
		vec[left + i] = temp[i];
}

template<typename T> 
void merge_sort(std::vector<T> &vec, int left, int right) {
	if (left >= right) return;

	int mid = left + (right - left) / 2;

	merge_sort(vec, left, mid);
	merge_sort(vec, mid+1, right);

	merge(vec,left,right);
}
template<typename T>
void MergeSort(std::vector<T> &vec) {
	merge_sort(vec, 0, vec.size()-1);
}

int main(void) {
	std::ifstream in("algsort.in");
	int n;
	in >> n;
	std::vector<int> v(n);

	for (int i = 0; i < n; i++)
		in >> v[i];

	in.close();

	MergeSort(v);

	std::ofstream out("algsort.out");

	for (auto e : v)
		out << e << " ";

	out.close();

	return 0;
}