Cod sursa(job #1497397)

Utilizator marcdariaDaria Marc marcdaria Data 6 octombrie 2015 19:22:27
Problema Generare de permutari Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.6 kb
#include <iostream>
#include <fstream>
int st[100],n;
using namespace std;

ifstream cin("permutari.in");
ofstream cout("permutari.out");

void afisare(int p)
{
    int i;
    for(i=1;i<=p;i++)
      cout<<st[i];
    cout<<endl;
}

bool valid(int p)
{
    int i;
    for(i=1;i<p;i++)
      if(st[p]==st[i])
      return 0;
    return 1;
}

void back(int p)
{
    int pval;
    for(pval=1;pval<=n;pval++)
    {
        st[p]=pval;
        if(valid(p))
          if(p==n)  afisare(p);
        else back(p+1);
    }
}

int main()
{
    cin>>n;
    back(1);
    return 0;
}