75. Sort Colors

class Solution {

    /**
     * @param Integer[] $nums
     * @return NULL
     */
    function sortColors(&$nums) {
        if (count($nums) <= 1) {
            return $nums;
        }
        
        foreach($nums as $currentKey => $cunnentNum) {
            foreach($nums as $nextKey => $nextNum) {
                if ($nums[$currentKey] < $nums[$nextKey]) {
                    [$nums[$currentKey], $nums[$nextKey]] = [$nums[$nextKey], $nums[$currentKey]];
                }
            }
        }
        
        return 'gg';
    }
}