Mai intai trebuie sa te autentifici.
Cod sursa(job #1012606)
Utilizator | Data | 19 octombrie 2013 13:22:58 | |
---|---|---|---|
Problema | Sortare prin comparare | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.73 kb |
#include <fstream>
#include <cstring>
#include <algorithm>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int i, N;
int v[500001], H[500001];
void UP_heap(int u) {
while (u != 1 && H[u] < H[u / 2]) swap(H[u / 2], H[u]), u /= 2;
}
void DOWN_heap(int u) {
swap(H[1], H[N]);
--N;
while (u * 2 <= N) {
if (u * 2 + 1 <= N) {
if (H[u * 2] < H[u * 2 + 1])
swap(H[u], H[u * 2]), u *= 2;
else
swap(H[u], H[u * 2 + 1]), u = u * 2 + 1;
}
else
swap(H[u], H[u * 2]), u *= 2;
}
}
int main() {
fin >> N;
for (i = 1; i <= N; ++i) {
fin >> H[i];
UP_heap(i);
}
while (N) {
fout << H[1] << ' ';
DOWN_heap(1);
}
fout << '\n';
return 0;
}