Question

How to find minimum distance between two numbers in an array with PHP

Answer 1

function MinDistance(&$arr, $number1, $number2) {
    $size = count($arr);

    $min_distance = PHP_INT_MAX;
    
    for ($i = 0; $i < $size; $i++) {
        for ($j = $i + 1; $j < $size; $j++) {
            if ($arr[$i] == $number1 && $arr[$j] == $number2 || 
                $arr[$i] == $number2 && $arr[$j] == $number1) {
                $min_distance = min($min_distance, abs($i - $j));
            }
        }
    }
    return $min_distance;
}
        
$arr = array(2, 3, 7, 3, 3, 4, 8, 8, 8, 11, 9, 1, 3);
        
echo MinDistance($arr, 3, 8);




/*
run:

2

*/

 

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