Answer to Question #27266 in C++ for Vijay Yadav

Question

program to find out the combination of an element of each array gives a result 0

Answer 1

$words = array('red', 'blue', 'green');    

$num = count($words);  



//The total number of possible combinations 


$total = pow(2, $num); 



//Loop through each possible combination  


for ($i = 0; $i < $total; $i++) {   

    //For each combination check if each bit is set 


    for ($j = 0; $j < $total; $j++) {  

       //Is bit $j set in $i?  

        if (pow(2, $j) & $i) echo $words[$j] . ' ';       

    }  

    echo '<br />';  

}