def numbers = $objectWrappers.wrap($arrays.arrayOf($plugins.loadClass("java.lang.Integer"), 1, 2, 3, 4, 5))
// 计算累积索引加权和, 累积索引加权和: [0, 1, 5, 14, 30, 55]
numbers.runningFoldIndexed(0) { index, acc, element -> acc + element * (index + 1) }.forEach {
    $console.log(it)
}