Cod sursa(job #2582188)

Utilizator CosminMorarMorar Cosmin Andrei CosminMorar Data 16 martie 2020 14:40:36
Problema Generare de permutari Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.63 kb
#include <iostream>
#include <fstream>
#include <bitset>
using namespace std;
ifstream fin("permutari.in");
ofstream fout("permutari.out");
int n, v[10];
bitset<10> used;

void genPerm(int k, int v[], bitset<10> &used) {
    if (k == n + 1) {
        for (int i = 1; i <= n; i++)
            fout << v[i] << ' ';
        fout << '\n';
        return;
    }

    for (int i = 1; i <= n; i++)
        if (!used[i]) {
            used[i] = true;
            v[k] = i;
            genPerm(k + 1, v, used);
            used[i] = false;
        }
}

int main() {
    fin >> n;
    genPerm(1, v, used);
    return 0;
}