Practice Exercises Java - Learn to program performing exercises with Java

Practice Exercises Java

Learn to program performing exercises with Java

12 Lessons Java with the Solutions - 228 Exercises Java with the solutions
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Function CountDV - Practice Exercises Java

Lesson 5:


Exercise 5.27:

Function CountDV


Create a function that calculates the amount of numeric digits and vowels that a text string contains. It will accept three parameters: the string that we want to search, the variable that returns the number of digits, and the number of vowels, in that order). The function should be called "CountDV". Use it like this:

CountDV ("This is the phrase 12", ref amountOfDigits, ref amountOfVowels)

In this case, amountOfDigits would be 2 and amountOfVowels would be 5

Source Code:

public class Main
	public static void CountDV(String answer, int amountOfDigits, int amountOfVowels)
		amountOfDigits = 0;
		amountOfVowels = 0;

		for (int i = 0; i < answer.length(); i++)
			switch (answer.substring(i, i + 1).toLowerCase())
				case "a":
				case "e":
				case "i":
				case "o":
				case "u":
				case "0":
				case "1":
				case "2":
				case "3":
				case "4":
				case "5":
				case "6":
				case "7":
				case "8":
				case "9":

	public static void main(String[] args)
		int amountOfDigits = 0;
		int amountOfVowels = 0;

		CountDV("This", amountOfDigits, amountOfVowels);

Exercisey 5.27

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