Cod sursa(job #1237463)
| Utilizator | Data | 4 octombrie 2014 10:15:32 | |
|---|---|---|---|
| Problema | Generare de permutari | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.54 kb |
#include <fstream>
using namespace std;
ifstream f("permutari.in");
ofstream g("permutari.out");
int n,m,d[300],p[10];
void back(int,int);
int main()
{
f>>n;
for(int i=1;i<=n;i++)
{
m|=1<<i;
d[1<<i]=i;
}
back(1,m);
return 0;
}
void back(int poz,int b)
{
int j;
if(b==0)
{
for(j=1;j<=n;j++)
g<<p[j]<<' ';
g<<'\n';
return;
}
for(j=b;j;j-=j&(-j))
{
p[poz]=d[j&(-j)];
back(poz+1,b-(j&(-j)));
}
}
