从汉诺塔问题来看“递归”本质 - RunningSnail - 博客园
https://www.cnblogs.com/tgycoder/p/6063722.html
从汉诺塔问题来看“递归”本质 - RunningSnail - 博客园
https://www.cnblogs.com/tgycoder/p/6063722.html
this.richTextBox2.SelectionStart=this.richTextBox2.Text.Length; this.richTextBox2.ScrollToCaret();
在書上學到繪圖驗證碼示例,記錄一下 //生成驗證碼 public string CheckCode() { int number; char code;