摩尔斯电码

package cryptology;import java.util.HashMap;
import java.util.Map;/*** 摩尔斯对照表* @author小奎*/
public class ContrastList {Map<Character, String> maplist = new HashMap<Character, String>();// 摩尔斯编码表集合public ContrastList() {maplist.put('A', "●-");maplist.put('B', "-●●●");maplist.put('C', "-●-●");maplist.put('D', "-●●");maplist.put('E', "●");maplist.put('F', "●●-●");maplist.put('G', "--●");maplist.put('H', "●●●●");maplist.put('I', "●●");maplist.put('G', "●---");maplist.put('K', "-●-");maplist.put('L', "●-●●");maplist.put('M', "--");maplist.put('N', "-●");maplist.put('O', "---");maplist.put('P', "●--●");maplist.put('Q', "--●-");maplist.put('R', "●-●");maplist.put('S', "●●●");maplist.put('T', "-");maplist.put('U', "●●-");maplist.put('V', "●●●-");maplist.put('W', "●--");maplist.put('X', "-●●-");maplist.put('Y', "-●--");maplist.put('Z', "--●●");/* 数字电码0-9 */maplist.put('0', "-----");maplist.put('1', "●----");maplist.put('2', "●●---");maplist.put('3', "●●●--");maplist.put('4', "●●●●-");maplist.put('5', "●●●●●");maplist.put('6', "-●●●●");maplist.put('7', "--●●●");maplist.put('8', "---●●");maplist.put('9', "----●");/* 标点符号，可自增删 */maplist.put(',', "--●●--"); // ,逗号maplist.put('.', "●-●-●-"); // .句号maplist.put('?', "●●--●●"); // ?问号maplist.put('!', "-●-●--"); // !感叹号maplist.put('\'', "●----●");// '单引号maplist.put('\"', "●-●●-●");// "引号maplist.put('=', "-●●●-");    // =等号maplist.put(':', "---●●●"); // :冒号maplist.put(';', "-●-●-●"); // ;分号maplist.put('(', "-●--●");   // (前括号maplist.put(')', "-●--●-"); // )后括号maplist.put(' ', "★");        // 留空格，这里的星号是自定义的}}

（2）Main方法测试

package cryptology;import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Map;
import java.util.Map.Entry;
import java.util.regex.Matcher;
import java.util.regex.Pattern;/*** 摩斯密码测试* @author 小奎*/
public class Main {char plaintext[]; // 明文String ciphertext[]; // 密文StringBuffer plainStr = new StringBuffer(" ");   // 明文字符串StringBuffer cipherStr = new StringBuffer(" ");  // 密文字符串// 实例化对照表对象ContrastList C = new ContrastList();Map<Character, String> maplist = C.maplist;public static void main(String[] args) {System.out.println("************ 欢迎使用摩尔斯电码程序  **************");Main m = new Main();m.init();   // 初始化m.Encryption();   // 加密m.Decryption();    // 解密}void init(){System.out.println("请输入一段明文：");BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));while (true) {// 正则验证 字母/数字/空格 , . ? + \ / : ; ! = ( )Pattern p =Pattern.compile("^[\\s,\\w,\\.,\\?,\\+,:,;,!,',\",=,\\(,\\)]+$"); String str;try {str = bf.readLine();Matcher m= p.matcher(str);if(m.find()){plaintext = str.toUpperCase().toCharArray(); // 将输入字符转换大写数组字符类型break;}} catch (IOException e) {} System.out.println("未按规则输入..请重新输入..");}}/*** 加密*/void Encryption(){for(int i=0; i<plaintext.length; i++){char tmp = plaintext[i];/*    字母      */if(maplist.containsKey(tmp))cipherStr.append(maplist.get(tmp)).append(" "); // 追加空格}ciphertext = cipherStr.toString().split(" ");System.out.println("加密后："+cipherStr);}/*** 解密*/void Decryption(){for(int i=1; i<ciphertext.length; i++){String tmp = ciphertext[i];/*  字母      */if(maplist.containsValue(tmp)){for (Entry<Character, String> s : maplist.entrySet()) {if(tmp.equals(s.getValue())){plainStr.append(s.getKey().toString().toLowerCase());}}}}System.out.println("解密后："+plainStr);}
}

效果如下