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- function isLucky($n) {
- $n_arr = array_map(function($value) { return (int)$value; }, str_split(strval($n)));
- $half_size = count($n_arr) / 2;
- $arr_1 = array_slice($n_arr, 0, $half_size);
- $arr_2 = array_slice($n_arr, $half_size);
- return array_sum($arr_1) == array_sum($arr_2);
- }
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