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【CSharp】生成密码字典

作者:codeeer / 发布于2014/7/17/ 673


	//Demo
	PasswordDictionary pd = new PasswordDictionary("123456", 4);
	while (true)
	{
	 String pwd = pd.GetNextPwd();
	 if (pwd == null)
	 {
	 break;
	 }
	 Console.WriteLine(pwd);
	}

	

	public class PasswordDictionary
	{
	 /// <summary>
	 /// 密码种子数组
	 /// </summary>
	 protected char[] PwdCharArray;
	 /// <summary>
	 /// 密码种子位置标识
	 /// </summary>
	 protected int[] PwdFlag;
	 /// <summary>
	 /// 是否结束标识
	 /// </summary>
	 protected bool IsEnd;
	 /// <summary>
	 /// 构造函数。密码种子为0123456789，密码长度为6
	 /// </summary>
	 public PasswordDictionary()
	 {
	 PwdCharArray = @"0123456789abcdefghijklmnopqrstuvwxyz,./<>?;':""[]{}\|-=_+`~!@#$%^&*()，。、《》？；&lsquo;：&ldquo;【】{}".ToCharArray();
	 PwdFlag = new int[16];
	 IsEnd = false;
	 }
	 /// <summary>
	 /// 构造函数。
	 /// </summary>
	 /// <param name="PwdSeed">密码种子</param>
	 /// <param name="PwdLen">密码长度</param>
	 public PasswordDictionary(String PwdSeed, int PwdLen)
	 {
	 PwdCharArray = PwdSeed.ToCharArray();
	 PwdFlag = new int[PwdLen];
	 IsEnd = false;
	 }
	 /// <summary>
	 /// 密码种子位置标识自加
	 /// </summary>
	 protected void AddPwdFlag()
	 {
	 int Max = PwdCharArray.Length;
	 PwdFlag[0]++;
	 for (int i = 0; i < PwdFlag.Length; i++)
	 {
	 if (PwdFlag[i] >= Max)
	 {
	 PwdFlag[i] = 0;
	 if (i + 1 < PwdFlag.Length)
	 {
	 PwdFlag[i + 1]++;
	 }
	 }
	 }
	 }
	 /// <summary>
	 /// 获得下一个密码
	 /// </summary>
	 /// <returns></returns>
	 public String GetNextPwd()
	 {
	 if (IsEnd)
	 {
	 return null;
	 }
	 System.Text.StringBuilder sb = new System.Text.StringBuilder();
	 IsEnd = true;
	 for (int i = 0; i < PwdFlag.Length; i++)
	 {
	 if (PwdFlag[i] < PwdCharArray.Length - 1)
	 {
	 IsEnd = false;
	 }
	 else if (IsEnd)
	 {
	 IsEnd = true;
	 }
	 sb.Append(PwdCharArray[PwdFlag[i]]);
	 }
	 AddPwdFlag();
	 return sb.ToString();
	 }
	}

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