Algorithm

  1. Input:

    • Prompt the user to enter a sentence.
    • Read the input sentence and store it in a variable.

  2. Initialize counters:

    • Initialize two variables, vowelCount and consonantCount, to keep track of the number of vowels and consonants, respectively.

  3. Convert to lowercase:

    • Convert the input sentence to lowercase to make the counting case-insensitive.

  4. Iterate through each character:

    • Use a loop to iterate through each character in the sentence.

  5. Check for vowels and consonants:

    • Inside the loop, for each character:
      • Check if the character is a vowel (a, e, i, o, u).
      • If it is a vowel, increment the vowelCount.
      • If it is a consonant (not a vowel and not a space or punctuation), increment the consonantCount.

  6. Display the results:

    • After the loop, display the counts of vowels and consonants.

 

Code Examples

#1 Code Example- Program to count vowels, consonants, digits, and spaces

Code - Java Programming

class Main {

  public static void main(String[] args) {
    String line = "This website is aw3som3.";
    int vowels = 0, consonants = 0, digits = 0, spaces = 0;

    line = line.toLowerCase();
    for (int i = 0; i  <  line.length(); ++i) {
      char ch = line.charAt(i);

      // check if character is any of a, e, i, o, u
      if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') {
        ++vowels;
      }

      // check if character is in between a to z
      else if ((ch >= 'a' && ch  < = 'z')) {
        ++consonants;
      }
      
      // check if character is in between 0 to 9
      else if (ch >= '0' && ch <= '9') {
        ++digits;
      }
      
      // check if character is a white space
      else if (ch == ' ') {
        ++spaces;
      }
    }

    System.out.println("Vowels: " + vowels);
    System.out.println("Consonants: " + consonants);
    System.out.println("Digits: " + digits);
    System.out.println("White spaces: " + spaces);
  }
}
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Output

x
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cmd
Vowels: 7
Consonants: 11
Digits: 2
White spaces: 3
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Demonstration

Java Programing Example to Count the Number of Vowels and Consonants in a Sentence-DevsEnv