# encoding: utf-8
numbers = $objectWrappers.wrap($arrays.arrayOf($plugins.loadClass("java.lang.Long"), 1, 2, 3, 4, 5))
# 计算所有元素的索引加权和
weightedSum = numbers.foldIndexed(0) { |index, acc, element| acc + element * (index + 1) }
# 输出：索引加权和: 55
$console.log("索引加权和: ", weightedSum)