Swift 2.0 Format 1000's into a friendly K's

Question

I'm trying to write a function to present thousands and millions into K's and M's For instance:

1000 = 1k
1100 = 1.1k
15000 = 15k
115000 = 115k
1000000 = 1m

Here is where I got so far:

func formatPoints(num: Int) -> String {
    let newNum = String(num / 1000)
    var newNumString = "\(num)"
    if num > 1000 && num < 1000000 {
        newNumString = "\(newNum)k"
    } else if num > 1000000 {
        newNumString = "\(newNum)m"
    }

    return newNumString
}

formatPoints(51100) // THIS RETURNS 51K instead of 51.1K

How do I get this function to work, what am I missing?

Answer 1

extension Int {
    var roundedWithAbbreviations: String {
        let number = Double(self)
        let thousand = number / 1000
        let million = number / 1000000
        if million >= 1.0 {
            return "\(round(million*10)/10)M"
        }
        else if thousand >= 1.0 {
            return "\(round(thousand*10)/10)k"
        }
        else {
            return "\(self)"
        }
    }
}

print(11.roundedWithAbbreviations)          // "11"
print(11111.roundedWithAbbreviations)       // "11.1k"
print(11111111.roundedWithAbbreviations)    // "11.1M"