Cod sursa(job #412376)
Utilizator | Flavius Anton f.v.anton | Data | 5 martie 2010 15:48:04 |
---|---|---|---|
Problema | Generare de permutari | Scor | 80 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.52 kb |
#include <iostream>
#include <fstream>
int x[30],n;
using namespace std;
fstream f("permutari.in",ios::in), g("permutari.out",ios::out);
int valid(int k)
{
for(int i=1;i<k;i++)
if(x[k]==x[i])
return 0;
return 1;
}
void tipar()
{
int i;
for(i=1;i<=n;i++)
g<<x[i]<<" ";
g<<endl;
}
void back(int k)
{
int i;
for(i=1;i<=n;i++)
{
x[k]=i;
if(valid(k))
if(k==n)
tipar();
else
back(k+1);
}
}
int main()
{
f>>n;
back(1);
f.close();
g.close();
return 0;
}