Post Office

package RegularExpressions_8.more_exercises;

import java.util.HashMap;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PostOffice {
    public static void main(String[] args) {
        Scanner console = new Scanner(System.in);

        String capitalLetters = "";
        HashMap<String, Integer> capitalLetterAndLength = new HashMap<>();

        String[] input = console.nextLine().split("\\|");

        for (int i = 0; i < input.length; i++) {
            String currentTextPart = input[i];

            if (i == 0) {
                Pattern regexCapital = Pattern.compile("([#$%*&]+)(?<letters>\\w+)(\\1)");
                Matcher matcher = regexCapital.matcher(currentTextPart);

                while (matcher.find()) {
                    String capitalLetter = matcher.group("letters");
                    capitalLetters += capitalLetter;
                }
            } else if (i == 1) {
                Pattern regexCapital = Pattern.compile("(?<ascii>\\d{2}):(?<length>\\d{2})");
                Matcher matcher = regexCapital.matcher(currentTextPart);

                while (matcher.find()) {
                    int asciiPosition = Integer.parseInt(matcher.group("ascii"));
                    int wordLength = Integer.parseInt(matcher.group("length"));

                    for (int j = 0; j < capitalLetters.length(); j++) {
                        String currentLetter = String.valueOf(capitalLetters.charAt(j));
                        if (currentLetter.equals(String.valueOf((char) asciiPosition))) {
                            capitalLetterAndLength.putIfAbsent(currentLetter, wordLength);
                        }
                    }

                }
            } else if (i == 2) {
                Pattern regexCapital = Pattern.compile("(?<=\\s|^)([A-Za-z]+[^\\w\\d\\s][A-Za-z]+)|([A-Za-z]+)(?=\\s|$)");
                Matcher matcher = regexCapital.matcher(currentTextPart);

                while (matcher.find()) {
                    String currentWord = matcher.group();

                    String firstLetter = String.valueOf(currentWord.charAt(0));
                    int length = Integer.parseInt(String.valueOf(currentWord.substring(1).length()));

                    if (capitalLetterAndLength.containsKey(firstLetter)){
                        if (capitalLetterAndLength.get(firstLetter).equals(length)) {
                            System.out.println(currentWord);
                        }
                    }
                }
            }
        }
    }
}