leetcode\DietPlanPerformance::dietPlanPerformance()

Complexity

Conditions	7
Paths	11

Size

Total Lines	21
Code Lines	13

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

<?php
    public static function dietPlanPerformance(array $calories, int $k, int $lower, int $upper): int
    {
        if (empty($calories) || $k <= 0) {
            return 0;
        }
        $res = $sum = 0;
        for ($i = 0; $i < $k - 1; $i++) {
            $sum += $calories[$i];
        }
        for ($i = $k - 1, $n = count($calories); $i < $n; $i++) {
            $sum += $calories[$i];
            if ($sum < $lower) {
                $res--;
            }
            if ($sum > $upper) {
                $res++;
            }
            $sum -= $calories[$i - $k + 1];
        }

        return $res;
    }