Cod sursa(job #1011024)

Utilizator dan.ghitaDan Ghita dan.ghita Data 16 octombrie 2013 08:45:57
Problema Generare de permutari Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.67 kb
#include <iostream>
#include<fstream>
#include<algorithm>
using namespace std;
int n, v[10];
ifstream f("permutari.in");
ofstream g("permutari.out");
int bun(int k){
for(int i=1; i<k; ++i) if(v[i]==v[k]) return 0;
return 1;
}

void afisare(){
for(int i=1; i<=n; ++i) g<<v[i]<<' ';
g<<'\n';
}

void bt(int k){
for(v[k]=1; v[k]<=n; ++v[k]){
    if(bun(k))
        if(k==n) afisare();
        else bt(k+1);
}

}
int main()
{
    int p=1;
    f>>n;
    if(n==5) cout<<n;
    //bt(1);

    for(int i=1; i<=n; ++i) v[i]=i; afisare();
    for(int i=1; i<=n; ++i) p*=i;
    for(int i=2; i<=p; ++i)
    next_permutation(v, v+n+1), afisare();


    return 0;
}