118A - 13

StringTask.java

import java.util.Scanner;

public class StringTask{

	static String splitter(String word, char[] exclude){
		word = word.toLowerCase();
		boolean contains;
		StringBuilder consonants = new StringBuilder();
	
		for(int i=0; i < word.length(); i++){
			contains = false;
			for(char ch: exclude){
				if(word.charAt(i) == ch){
					contains = true;
					break;
				}
			}
			
			if(!contains){
				consonants.append('.');
				consonants.append(word.charAt(i));
			}

		}
		return consonants.toString();
	}

	public static void main(String[] args){
		char[] vowels = {'a', 'o', 'y', 'e', 'u', 'i'};
		Scanner input  = new Scanner(System.in);
		String inputs = input.nextLine();
		String output = splitter(inputs, vowels);
		System.out.println(output);
	}
}