PHP-leetcode-26

PHP陣列方法

function removeDuplicates(&$nums){
    $nums = array_keys(array_count_values($nums));
    return count($nums);
}

快慢指標

function removeDuplicates(&$nums)
{
    $length = count($nums);
    $slowP = 0;
    for ($fastP = 0; $fastP < $length; $fastP++) {
        if ($nums[$fastP] != $nums[$slowP]) {
            $slowP++;
            $nums[$slowP] = $nums[$fastP];
        }
    }
    return $slowP + 1;
}