Nu aveti permisiuni pentru a descarca fisierul grader_test10.in
Cod sursa(job #2082756)
| Utilizator | Data | 6 decembrie 2017 19:21:34 | |
|---|---|---|---|
| Problema | Sortare prin comparare | Scor | 60 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.89 kb |
#include <bits/stdc++.h>
using namespace std;
int a[500005];
int n;
int partitionare(int a[], int st, int dr)
{
int poz_pivot = st + rand()%(dr - st + 1);
int pivot = a[poz_pivot];
swap(a[dr], a[poz_pivot]);
int i = st - 1;
for(int j = st; j <= dr - 1; ++j) {
if(a[j] <= pivot) {
i++;
swap(a[i], a[j]);
}
}
swap(a[i + 1], a[dr]);
return i + 1;
}
void Q_Sort(int a[], int st, int dr)
{
if(st < dr) {
int q = partitionare(a, st, dr);
Q_Sort(a, st, q - 1);
Q_Sort(a, q + 1, dr);
}
}
int main()
{
freopen("algsort.in", "r", stdin);
freopen("algsort.out", "w", stdout);
srand(time(NULL));
cin >> n;
for(int i = 1; i <= n; ++i) cin >> a[i];
Q_Sort(a, 1, n);
for(int i = 1; i <= n; ++i) cout << a[i] << " ";
return 0;
}
