查找一个数值中最小的N个数

fun queryMinK(arrs: MutableList,k: Int) {
var min = 0;
var smallTemp = arrs[0]
for (i in 0..k-1) {
smallTemp = arrs[i]
var smallIndex = i
for (j in k..arrs.size-1) {
if (smallTemp>arrs[j]) {
smallIndex = j
smallTemp = arrs[j]
}
}
if (smallIndex!=i) {
var temp = arrs[i]
arrs[i] = arrs[smallIndex]
arrs[smallIndex] = temp
}
}
}