public class Demo138{ public static int calculateScore(String a){ String[] list = a.split(","); int sum = 0; for (int i = 0; i 21) sum = sum + 1; else sum = sum + 11; } else { sum = sum + Character.getNumericValue(list[i].charAt(0)); } } return sum; } public static void main(String[] args){ System.out.println(calculateScore("7")); System.out.println(calculateScore("7,K")); System.out.println(calculateScore("A,A,A,A,7")); } }

provide unit test for this porgram