public class SouthAfricanIDVerification {
    public void Validator(String inputID){
        String InputID ="";
        if(InputID.length()==13){
            String number = String.valueOf(InputID);
            String EvenIndexOfID = "";
            for(int i = 0; i < number.length();i=i+2) {
                int j = Character.digit(number.charAt(i), 10);
                EvenIndexOfID+=j+" ";
            }
            String SAIDA = EvenIndexOfID.substring(0, 12);
            int TempA = 0;
            if(SAIDA.length() ==12){
                String str = SAIDA;
                String tempAA = "";
                int sum = 0;
                for(int i = 0; i < str.length(); i++){
                    char ch = str.charAt(i);
                        if (Character.isDigit(ch)){
                            tempAA += ch;
                        }else{
                            sum += Integer.parseInt(tempAA);
                            tempAA = "0";
                        }
                }
            TempA = sum + Integer.parseInt(tempAA);
            }
            String OddIndexOfID ="";
            for(int i = 1; i < number.length();i=i+2) {
            int j = Character.digit(number.charAt(i), 10);
            OddIndexOfID+=j;
            }
            int TempB = Integer.parseInt(OddIndexOfID)*2;
            int sumOfTempB = 0;
            String TempBB = Integer.toString(TempB);
            String TempBBB = String.valueOf(TempBB);
            for(int i=0;i<TempBBB.length();i++){
                int j = Character.digit(TempBBB.charAt(i), 10);
                sumOfTempB = sumOfTempB+j;
            }
            int sumOfAnB = TempA+sumOfTempB;
            String s = String.valueOf(sumOfAnB);
            char c = s.charAt(1);
            int num = c -'0';
            int toVerify = 10-num;
            int Verified = toVerify-Integer.parseInt(InputID.substring(InputID.length() - 1));
            if(Verified == 0){
                System.out.println("Verified!");
            }else{
                System.out.println("Fake lol!");
            }
        }else{
            System.out.println("Input is not Valid; it is not 13 characters");
        }

    }
}