使用HashMap的java中的莫尔斯电码

HashMap<Character, String> morseCodeMap = new HashMap<>();
morseCodeMap.put('A', ".-");
morseCodeMap.put('B', "-...");
morseCodeMap.put('C', "-.-.");
// 其他字母和数字的映射

public String encodeToMorseCode(String text) {
    StringBuilder morseCode = new StringBuilder();
    for (char c : text.toCharArray()) {
        String code = morseCodeMap.get(Character.toUpperCase(c));
        if (code != null) {
            morseCode.append(code).append(" ");
        }
    }
    return morseCode.toString();
}

public String decodeFromMorseCode(String morseCode) {
    StringBuilder text = new StringBuilder();
    String[] codes = morseCode.split(" ");
    for (String code : codes) {
        for (Map.Entry<Character, String> entry : morseCodeMap.entrySet()) {
            if (entry.getValue().equals(code)) {
                text.append(entry.getKey());
                break;
            }
        }
    }
    return text.toString();
}