Swift 把 1234656转化成 1.23万 或1.23亿

extension Float {

    /** 战斗力值转换 */
    var combatValues: String {

        if (self / 10000) > 1 {

            let temp = self / 10000

            if fmodf(Float(temp), 1) == 0 {

                let str = String.init(format: "%.0f", temp)

                return str + "万"

            }else if fmodf(Float(temp) * 10, 1) == 0 {

                let str = String.init(format: "%.1f", temp)

                return str + "万"

            }else{

                let str = String.init(format: "%.2f", temp)
                
                let decimal = str.componentsSeparatedByString(".")
                
                let arrayString = decimal[1]
                
                if arrayString == "00" {
                    
                    return decimal[0] + "万"
                }

                return str + "万"

            }

        }

        if (self / 100000000) > 1 {

            let temp = self / 100000000

            if fmodf(Float(temp), 1) == 0 {

                let str = String.init(format: "%.0f", temp)

                return str + "亿"

            }else if fmodf(Float(temp) * 10, 1) == 0 {

                let str = String.init(format: "%.1f", temp)

                return str + "亿"

            }else{

                let str = String.init(format: "%.2f", temp)
                
                let decimal = str.componentsSeparatedByString(".")
                
                let arrayString = decimal[1]
                
                if arrayString == "00" {
                    
                    return decimal[0] + "亿"
                }
                
                return str + "亿"

            }

        }
        
        let decimal = String.init(self).componentsSeparatedByString(".")
        
        let arrayString = decimal[1]
        
        if arrayString == "0" {
            
            return decimal[0]
        }

        return String.init(self)

    }

}

字符串扩展

extension String {
    
    func attributedString(font:CGFloat)->NSMutableAttributedString{
    
        let attributedS = NSMutableAttributedString(string: self)
        
        if self.containsString("万") || self.containsString("亿") {
            
            let normalAttributes = [NSFontAttributeName:UIFont.systemFontOfSize(font)]
            
            attributedS.addAttributes(normalAttributes, range: NSMakeRange(self.characters.count - 1,1))
            
        }
        
        return attributedS
    
    }
    
}

调用：label.attributedText = Float(number).combatValues