Nu aveti permisiuni pentru a descarca fisierul grader_test6.ok
Cod sursa(job #2760168)
Utilizator | Data | 23 iunie 2021 14:28:36 | |
---|---|---|---|
Problema | Sortare prin comparare | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 1.3 kb |
#include <fstream>
#include <ctime>
#include <cstdlib>
using namespace std;
ifstream cin("algsort.in");
ofstream cout("algsort.out");
int sir[500005], N;
void Random_Pivot(int L, int R)
{
int P = L + rand() % (R - L);
swap(sir[L], sir[P]);
}
int Divide_Lomuto(int L, int R)
{
//Random_Pivot(L, R);
int st = L, dr = R, x = sir[L];
while(st < dr)
{
while(st < dr && sir[dr] >= x) dr--;
sir[st] = sir[dr];
while(st < dr && sir[st] <= x) st++;
sir[dr] = sir[st];
}
sir[st] = x;
return st;
}
int Divide_Hoare(int L, int R)
{
Random_Pivot(L, R);
int st = L - 1, dr = R + 1;
int pivot = sir[L];
while(true)
{
do
{
st++;
}while(sir[st] < pivot);
do
{
dr--;
}while(sir[dr] > pivot);
if(st >= dr) return dr;
swap(sir[st], sir[dr]);
}
}
void QuickSort(int L, int R)
{
int M = Divide_Hoare(L, R);
if(M - L > 1) QuickSort(L, M - 1);
if(R - M > 1) QuickSort(M + 1, R);
}
int main()
{
srand(time(NULL));
cin >> N;
for(int i = 1; i <= N; i++)
cin >> sir[i];
QuickSort(1, N);
for(int i = 1; i <= N; i++)
cout << sir[i] << " ";
return 0;
}