/**
 * @param $sum  要分的总数（苹果数量）5
 * @param $number   要分的个数（小朋友数量）3
 * @return int|mixed
 */
public function averageAllot($sum,$number){
    $newArray = [];
    $count = 0;
    for ($i=0;$i<$number;$i++){
        $result = ceil(($sum - $count) / ($number - $i));   //注意分母不能为0，用的时候需要做个判断
        $newArray[$i] = $result;
        $count += $result;
    }
    return $newArray;
}