//FOR LOOP & SWITCH-CASE
import java.util.Scanner;

public class Count
{
    public static void main (String[] args)
    {
        String phrase;    // a string of characters
        int countBlank;   // the number of blanks (spaces) in the phrase
        int countA;       // the number of 'a' and 'A'
        int countE;       // the number of 'e' and 'E'
        int countS;       // the number of 's' and 'S'
        int countT;       // the number of 't' and 'T'
        int length;       // the length of the phrase
        char ch;          // an individual character in the string
        Scanner scan = new Scanner(System.in);

        // Print a program header
        System.out.println ();
        System.out.println("Character Counter");
        System.out.println();

        // Outer while loop to keep asking for phrases until "quit"
        while (true) {
            System.out.print("Enter a sentence or phrase (or type 'quit' to exit): ");
            phrase = scan.nextLine();

            // Exit if user types "quit"
            if (phrase.equalsIgnoreCase("quit")) {   // Capital-lower letter ignore
                break;
            }

            // Initialize counts for each new phrase
            countBlank = 0;
            countA = 0;
            countE = 0;
            countS = 0;
            countT = 0;

            // Get the length of the phrase
            length = phrase.length();

            // Loop through each character in the phrase
            for (int i = 0; i < length; i++) {
                ch = phrase.charAt(i); // get character at position i

                // Use switch statement to count occurrences of specific characters
                switch (ch) {
                    case 'a':
                    case 'A':
                        countA++;
                        break;
                    case 'e':
                    case 'E':
                        countE++;
                        break;
                    case 's':
                    case 'S':
                        countS++;
                        break;
                    case 't':
                    case 'T':
                        countT++;
                        break;
                    case ' ':
                        countBlank++;  // count spaces
                        break;
                    default:
                        // Do nothing for other characters
                        break;
                }
            }

            // Print the results
            System.out.println();
            System.out.println("Number of blank spaces: " + countBlank);
            System.out.println("Number of 'a'/'A': " + countA);
            System.out.println("Number of 'e'/'E': " + countE);
            System.out.println("Number of 's'/'S': " + countS);
            System.out.println("Number of 't'/'T': " + countT);
            System.out.println();
        }

        System.out.println("Goodbye!"); // Print a goodbye message when exiting
    }
}