/// <summary>
/// 得到结果
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public string Translate(string input)
{
string result = "";
//从第二位字符开始要变更转子位置
rotorPosition -= prevLength;
input = input.ToUpper();
foreach (char letter in input)
{
if (!alphabet.Contains(letter))
{
continue;
}
//得到字母序号
int charValue = alphaToNumber[letter];
//连线板替换
charValue = plugboard.Pass(charValue);
//三次替换计算
charValue = rotor1.Forward(charValue, RotorPosition1());
charValue = rotor2.Forward(charValue, RotorPosition2());
charValue = rotor3.Forward(charValue, RotorPosition3());
//反射器
charValue = reflector.Reflect(charValue);
//原路返回
charValue = rotor3.Backward(charValue, RotorPosition3());
charValue = rotor2.Backward(charValue, RotorPosition2());
charValue = rotor1.Backward(charValue, RotorPosition1());
//返回插线板
charValue = plugboard.Pass(charValue);
//结果
result += alphabet[charValue];
//每个字符都会让转子移动
rotorPosition++;
}
//明文长度
prevLength = result.Length;
return(result);
}