Thread: Doubling Letter in a String -- Stuck on Code

Hey guys! So I'm asked to make a piece of code that takes a string of text that a user inputs and print to the console the same string but with each letter doubled and each '!' tripled.

Example: hey, guys! ---> hheeyy, gguuyyss!!!

I have made the code below so far, and it works, however I need to be able to triple the '!' while having commas and other special characters remain at 1! I have tried adding more if-statements but it seems to only break the output even more. Any help would be appreciated. Thank you!!!

So far, I will input "hey, guys!" and receive "hheeyy, gguuyyss!" (I need the '!' tripled without doubling the comma.

 
import java.util.Scanner;
 
public class DoubleLetters {
 
	public static void main (String[] args) {
 
		Scanner scan = new Scanner(System.in);
		System.out.println("Please type a sentence:");
		String input = scan.nextLine();
 
		int length = input.length();
		String newString = "";
 
		for(int j = 0; j < length; j++) {
			if(Character.isLetter(input.charAt(j)))
			        newString = newString + input.charAt(j) + input.charAt(j);
			else
				newString = newString + input.charAt(j);
		}
			System.out.println(newString);
	}
}

--- Update ---

I've been thinking and I think the only way I can do this is with another if-statement. I'm not sure if I should put it right after the first if-statement or after the else