Power set generated by bits

Question

I have this code which generates power set of an array of size 4 (number is just example, less combinations to write...).

#define ARRAY_SIZE 4


unsigned int i,          


        

Answer 1

I used this answer to make following code:

Basically you need to print nCr sequences for all r

#include 
#include 

using namespace std;

 //This generates all nCr sequences
void display(const std::vector & v, 
             std::vector& comb, 
             int offset, int k) {
    if (k == 0) {
        std::cout<<"{";
        for(auto &x:comb)
            std::cout< v,comb;
    for (int i = 0; i < n; ++i) 
     v.push_back(i+1); 

    for (int i = 1; i <= n; ++i) 
        display(v,comb,0, i);

    return 0;
}

See here