Cod sursa(job #1497402)

Utilizator marcdariaDaria Marc marcdaria Data 6 octombrie 2015 19:27:36
Problema Generare de permutari Scor 20
Compilator cpp Status done
Runda Arhiva educationala Marime 0.59 kb
#include <iostream>
#include <fstream>
using namespace std;

ifstream fi("permutari.in");
ofstream go("permutari.out");
int st[100],n;
void afisare(int p)
{
    int i;
    for(i=1;i<=p;i++)
      go<<st[i];
    go<<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()
{
    fi>>n;
    back(1);
    return 0;
}