Cod sursa(job #1141127)
Utilizator | Toma Radu-Petrescu rptoma | Data | 12 martie 2014 17:24:15 |
---|---|---|---|
Problema | Generare de permutari | Scor | 100 |
Compilator | cpp | Status | done |
Runda | Arhiva educationala | Marime | 0.54 kb |
#include <fstream>
using namespace std;
int n,i,a[100],sol[100];
ifstream f("permutari.in");
ofstream g("permutari.out");
bool ok(int k){
int i;
for(i=1;i<k;i++) if(sol[i]==sol[k]) return false;
return true;}
void afis(){
int i;
for(i=1;i<=n;i++) g<<a[sol[i]]<<" ";
g<<"\n";}
void back(int k){
int i;
if(k>n) afis();
else for(i=1;i<=n;i++){
sol[k]=i;
if(ok(k)==true) back(k+1);
}
}
int main()
{
f>>n;
for(i=1;i<=n;i++) a[i]=i;
back(1);
f.close();
g.close();
return 0;
}