kotlin集合分批算法

 fun <T> splitGroup(list:List<T>, groupSize:Int, subListCallback:((List<T>) -> Unit) ?= null) {
        val groupNum = list.size / groupSize

        val remainLast = list.size % groupSize
        for (index in 0 until groupNum) {
            val start = index * groupSize
            subListCallback?.invoke(list.subList(start, start + groupSize))
        }
        if (remainLast > 0) {
            val index = (groupNum) * groupSize
            subListCallback?.invoke(list.subList(index, index + remainLast))
        }
    }
1
2
3
4
5
6
7
8
9
10
11
12
13