NLPartiInvitation

import java.util.Scanner;

public class Parte {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        String name = scanner.nextLine();
        double validCount = 0.0;
        double invalidCount = 0.0;
        int total = 0;

        while (!"Statistic".equals(name)){
            total++;
            name = name.toLowerCase();
            boolean isValid = true;
            for (int i = 0; i < name.length() ; i++) {
                if (name.charAt(i) < 97 || name.charAt(i) > 122){
                   isValid = false;
                }
            }
            if (isValid){
                validCount++;
                name =  name.substring(0,1).toUpperCase() + name.substring(1).toLowerCase();
                System.out.println(name);
            } else {
                invalidCount++;
                System.out.println("Invalid name!");
            }
            name = scanner.nextLine();
        }

        System.out.printf("Valid names are %.2f%% from %d names.\n",(validCount / total) * 100,total);
        System.out.printf("Invalid names are %.2f%% from %d names.\n",(invalidCount / total) * 100,total);
    }
}