Pagini recente » Cod sursa (job #1412054) | Cod sursa (job #2085854) | Cod sursa (job #2415630) | Cod sursa (job #1984023) | Cod sursa (job #3302716)
#include <fstream>
#include <vector>
using namespace std;
void merge(vector<int>& a, vector<int>& b, int left, int mid, int right) {
int i = left, j = mid + 1, k = left;
while (i <= mid && j <= right) {
if (a[i] < a[j]) {
b[k++] = a[i++];
} else {
b[k++] = a[j++];
}
}
while (i <= mid) {
b[k++] = a[i++];
}
while (j <= right) {
b[k++] = a[j++];
}
for (i = left; i <= right; i++) {
a[i] = b[i];
}
}
void merge_sort(vector<int>& a, vector<int>& b, int left, int right) {
if (left < right) {
int mid = (left + right) / 2;
merge_sort(a, b, left, mid);
merge_sort(a, b, mid + 1, right);
merge(a, b, left, mid, right);
}
}
int main() {
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int n;
fin >> n;
vector<int> a(n);
for (int i = 0; i < n; i++) {
fin >> a[i];
}
vector<int> b(n);
merge_sort(a, b, 0, n - 1);
for (int i = 0; i < n; i++) {
fout << a[i] << " ";
}
fout << endl;
return 0;
}