扁平的MutableList元素每隔若干元素一组装入新MutableList,Kotlin

扁平的MutableList元素每隔若干元素一组装入新MutableList,Kotlin

 

fun main(args: Array) {
    val array = arrayOf("a", "b", "c", "d", "e", "f", "g", "h", "i", "j")
    val STEP = 3 //3个元素一组
    var k = 0
    val lists = mutableListOf>()

    for (i in array.indices step STEP) {
        val temp = mutableListOf()

        for (j in 0 until STEP) {
            k = i + j
            if (k >= array.size) {
                break
            }
            temp.add(array[k])
        }

        lists.add(temp)
    }

    lists.forEachIndexed { index, s ->
        println(s)
    }
}

 

[a, b, c]
[d, e, f]
[g, h, i]
[j]

 

 

 

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