Cod sursa(job #1297051)

Utilizator lavi07Cioloca Lavinia lavi07 Data 21 decembrie 2014 17:30:35
Problema Submultimi Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 1.01 kb
#include <stdio.h>

void afisare(int n, int p[])
{
    if (n == 0)
        return;
    for(int i=1;i <=n; i++)
        printf("%d ", p[i]);
    printf("\n");
}

int getbit(int n, int bit) {
    int mask = 1 << bit;
    if ((n & mask) == 0)
        return 0;
    else
        return 1;
}

/*void back(int i, int n, int p[]) {
    afisare(i - 1, p);
    if (i == n+1)
        return;
    for (int a = 1; a <= n; a++) {
        bool valid = true;
        for (int j = 1; j <= i - 1; j++)
            if (p[j] >= a)
                valid = false;
        if (valid == true) {
            p[i] = a;
            back(i + 1, n, p);
        }
    }
}*/

int main()
{
    freopen("submultimi.in", "r", stdin);
    freopen("submultimi.out", "w", stdout);
    int n, p[20];
    scanf("%d", &n);
    for(int i=1; i<= ((1<<n)-1); i++)
    {
        for(int j=0; j<n ;j++)
            if(getbit(i,j))
                printf("%d ", j+1);
        printf("\n");
    }
    //back(1, n, p);
    return 0;
}