Cod sursa(job #3244626)

Utilizator Yannis_TheodorBalan Yannis Theodor Yannis_Theodor Data 25 septembrie 2024 19:11:37
Problema Generare de permutari Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.86 kb
#include <fstream>

using namespace std;
ifstream cin("permutari.in");
ofstream cout("permutari.out");
int n;
int v[9] = {0, 1, 2, 3, 4, 5, 6, 7, 8};
void bactrak(int k)
{
    bool ok=true;
    if(k==n)
    {
        for(int i=1; i<=n; i++)
        {
            cout<<v[i]<<" ";
        }
        cout<<endl;
    }
    else
    {
        for(int i=1; i<=n; i++)
        {
            ok=true;
            for(int j=1; j<=k; j++)
            {
                if(v[j]==i)
                {
                    ok=false;
                    break;
                }
            }
            if(ok)
            {
                v[k+1]=i;
                bactrak(k+1);
            }
        }
    }
}
int main()
{
    cin>>n;
    for(int i=0; i<n; i++)
    {
        bactrak(1);
        swap(v[n-i], v[1]);
    }
    return 0;
}