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摩尔斯电码（又译为摩斯密码，Morse code）是一种时通时断的信号代码，通过不同的排列顺序来表达不同的英文字母、数字和标点符号。它由美国人艾尔菲德·维尔于1837年发明。 摩尔斯电码是一种早期的数字化通信形式，但是它不同于现代只使用零和一两种状态的二进制代码，它的代码包括五种： 点、划、点和划之间的停顿、每个字符间短的停顿（在点和划之间）、每个词之间中等的停顿以及句子之间长的停顿。
public static class MorseCode // 摩尔斯电码(星际穿越)
{
private static volatile string[,] CodeTable =
{
{"A",".-"},{"B","-..."},{"C","-.-."},{"D","-.."},{"E","."},"..-.."},{"F","..-."},{"G","--."},{"H","...."},{"I",".."},{"J",".---"},{"K","-.-"},{"L",".-.."},{"M","--"},{"N","-."},{"O","---"},{"P",".--."},{"Q","--.-"},{"R",".-."},{"S","..."},{"T","-"},{"U","..-"},{"V","...-"},{"W",".--"},{"X","-..-"},{"Y","-.--"},{"Z","--.."},{"0","-----"},{"1",".----"},{"2","..---"},{"3","...--"},{"4","....-"},{"5","....."},{"6","-...."},{"7","--..."},{"8","---.."},{"9","----."},{".",".-.-.-"},{",","--..--"},{":","---..."},{"?","..--.."},{"\'",".----."},{"-","-....-"},{"/","-..-."},{"(","-.--."},{")","-.--.-"},{"\"",".-..-."},{"=","-...-"},{"+",".-.-."},{"*",{"@",".--.-."},{"{UNDERSTOOD}","...-."},{"{ERROR}","........"},{"{INVITATION TO TRANSMIT}",{"{WAIT}",".-..."},{"{END OF WORK}","...-.-"},{"{STARTING SIGNAL}","-.-.-"},{" ","\u2423"}
};
public static string Enc(string str)
{
int i;
string ret = string.Empty;
if (str != null && (str = str.ToUpper()).Length > 0)
foreach (char asc in str)
if ((i = Find(asc.ToString(),0)) > -1)
ret += " " + CodeTable[i,1];
return ret;
}
public static string Dec(string str)
{
int i;
string[] splits;
string ret = string.Empty;
if (str != null && (splits = str.Split(' ')).Length > 0)
{
foreach (string split in splits)
if ((i = Find(split,1)) > -1)
ret += CodeTable[i,0];
return ret;
}
return "{#}";
}
private static int Find(string str,int cols)
{
int i = 0,len = CodeTable.Length / 2; // len / rank
while (i < len)
{
if (CodeTable[i,cols] == str)
return i;
i++;
};
return -1;
}
}
使用代码:
string encry = MorseCode.Enc("China"); // 把China换成摩尔斯电码
string decry = MorseCode.Dec(encry); //把encry换成明文形式
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