Question

How to find the combination of three elements in an array whose sum is equal to N in PHP

Answer 1

function PrintThreeElements(&$arr, $N) {
    $size = count($arr);
    
    for ($i = 0; $i < $size; $i++) {
        for ($j = $i + 1; $j < $size; $j++) {
            for ($k = $j + 1; $k < $size; $k++) {
                if ($arr[$i] + $arr[$j] + $arr[$k] == $N) {
                    echo $arr[$i] . " " . $arr[$j] . " " . $arr[$k];
                    return;
                }
            }
        }
    }
}
        
$arr = array(3, 2, 6, 4, 10, 5, 9, 7, 8, 12);
        
$N = 24;

PrintThreeElements($arr, $N);




/*
run:

3 9 12

*/

 

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