What is the best way in kotlin to convert an Int value to a Double in a certain format-CodePudding

I have the following numbers: val first: Int = 531241180 val second: Int = 653345

What would be the best way to write a function which could get first and second as input and return the following values:

output of the fist to a Double value 53.1241180

output of the second to a Double value 6.53345

CodePudding user response：

If you are allowed to specify, how many numbers you want to see before dot, you can write something like this, avoiding math operations

fun intToDouble(value: Int, integerPlaces: Int): Double {
    val raw = value.toString()
    val sb = StringBuilder(raw)

    if(integerPlaces < sb.length()) {
        sb.insert(integerPlaces, ".")
    } else {
        return 0.0 // return 0 if operation is illegal
    }
    
    return sb.toString().toDouble()
}