java - 将 php array_sum 转换为 java

Question

$a = array(2, 4, 6, 8);
echo "sum(a) = " . array_sum($a) . "\n";  //==20

我如何在 java 中做到这一点？

Answer 1

    long array_sum(int...array)
    {
        long sum = 0;
        for(int value : array)
            sum += value;
        return sum;
    }

示例:

System.out.println(array_sum(1, 2, 3, -1));
System.out.println(array_sum(1, 2));
System.out.println(array_sum(new int[]{1,2,3,4,5}));

5
3
15