我想要实现的是从ArrayList<Object>获得对象的最小/最大属性值.例如，如果Object具有属性weight(浮点)，我想要列表中最重的对象.
I've tried to implement Comparable to get max/min value but this returns same value for min and same for max for some reason. (I don't know if it works with floats)
val maxVal: Float = arrayList.max().floatVal1
val minVal: Float = arrayList.min().floatVal1
data class CustomObject(var val1: String, var floatVal1: Float , var floatVal2: Float?, var floatVal3: Float?, var floatVal4: Float?): Comparable<CustomObject>{
override fun compareTo(other: CustomObject) = (floatVal1 - other.floatVal1).toInt()
}
That specific question from duplicate post does not show me how to get max/min value based on Float. That's the problem. If I want to modify Comparator it accepts only Int. And i cant use that stream feature because my app is for API 23+ not 24+