获取N个随机数，还是很容易出现重复，需要注意去重
2022-10-14 21:38:16.408 6746-6786 D getRandomList: index=132
2022-10-14 21:38:16.408 6746-6786 D getRandomList: index=93
2022-10-14 21:38:16.408 6746-6786 D getRandomList: index=92
2022-10-14 21:38:16.408 6746-6786 D getRandomList: index=92
2022-10-14 21:38:16.408 6746-6786 D getRandomList: index=121
private fun getRandomList(rawList: List<String>, needListSize: Int): List<String> {
return if (rawList.isNotEmpty()) {
if (needListSize > 0) {
val counts = if (needListSize > rawList.size) rawList.size else needListSize
val randomSet = mutableSetOf<String>()
for (index in rawList.indices) {
if (randomSet.size == counts) {
break
}
val randomIndex = (rawList.indices).random()
LogUtils.d(LOG_TAG, "getRandomList: index=", randomIndex)
randomSet.add(rawList[randomIndex])
}
randomSet.toList()
} else {
rawList
}
} else {
emptyList()
}
}
