Cod sursa(job #2661515)
Utilizator | cosmin komikaze | Data | 22 octombrie 2020 10:24:07 |
---|---|---|---|
Problema | Generare de permutari | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.6 kb |
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("permutari.in");
ofstream g("permutari.out");
int x[9], n;
void afis()
{
for(int i = 1; i <= n; ++ i)
g << x[i] << " ";
g << "\n";
}
bool valid(int k)
{
for(int i = 1; i < k; ++ i)
if(x[i] == x[k]) return 0;
return 1;
}
void back(int k)
{
for(int i = 1; i <= n; ++ i)
{
x[k] = i;
if(valid(k))
{
if(k == n) afis();
else back(k + 1);
}
}
}
int main()
{
f >> n;
back(1);
return 0;
}