问如何比较两个字符串以查看其中一个字符串是否大于另一个字符串

EN

   //Randomize Dealer Card
func randomDealerNumber(){

    let randomNumber = arc4random_uniform(8)
    if randomNumber == 0 {

        dealerNum.text = "10"
    } else if randomNumber == 1 {

        dealerNum.text = "1"
    } else if randomNumber == 2 {

        dealerNum.text = "2"
    } else if randomNumber == 3 {

        dealerNum.text = "3"
    } else if randomNumber == 4 {

        dealerNum.text = "4"
    }else if randomNumber == 5 {

        dealerNum.text = "5"
    } else if randomNumber == 6 {

        dealerNum.text = "6"
    } else if randomNumber == 7 {

        dealerNum.text = "7"
    }
}



let playerCard = playerNum.text
let dealerCard = dealerNum.text
if playerCard == dealerCard {
    print("These two strings are considered equal")
}