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

Question #27266
program to find out the combination of an element of each array gives a result 0
Expert's answer
$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 />';


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