Cod sursa(job #514639)
Utilizator | Data | 19 decembrie 2010 12:10:47 | |
---|---|---|---|
Problema | Generare de permutari | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.48 kb |
#include <fstream.h>
ifstream f("permutari.in");
ofstream g("permutari.out");
int s[10],n;
void afis()
{ for(int i=1;i<=n;i++) g<<s[i]<<' ';
g<<'\n';
}
int valid(int k)
{ for(int i=1;i<k;i++)if(s[k]==s[i])return 0;
return 1;
}
void back(int k)
{ int i;
for(i=1;i<=n;i++) {s[k]=i; if(valid(k)) if(k==n) afis();
else back(k+1);
}
}
int main()
{ f>>n;
back(1);
f.close();g.close();
return 0;
}