Permutations with conditions

Question

Question 1:

abc, is a three digit integer that provides the following conditions

condition 1 will cba > abc
condition 2 abc will prime number
condition 3 cba will prime number
condition 4 ab will prime number
condition 5 bc will prime number
condition 6 cb will prime number
condition 7 ba will prime number

Write a c# working code to satisfy all

 

Please help guys its urgent 

Answer 1

try this:

  private ArrayList Keys = new ArrayList();
  private void InvWiz0_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
  {
     Keys.Add(e);
  }


this "i think" will capture each key you press on the keyboard and add it to an arraylist. As I have added the whole KeyEventArgs object, you will be able to go through and view each one and it's properties.

You have to cast it back to an KeyEventArgs when reading tho.

ie.

object[] Keys_Ar = Keys.ToArray();
foreach(KeyEventArgs Key in Keys_Ar)
{
}

or

object[] Keys_Ar = Keys.ToArray();
for(int i = 0; i < Keys_Ar.Length; i++)
{
   ((KeyEventArgs)Keys_Ar[i]).property
}

P.S I hope you are not looking to use this as a keylogger.!

Gav

Answer 2

Thanx for reply, it helped a lot, but Instill cant make it work, could you post a little example? Thank you

Answer 3

Override Your control - OnKey...() or ProcessKey...() protected methods.
In OnKey... KeyEventArgs see Handled property.
Remember method arguments in Your own buffer to future use - string isn't good to remember all keyboard input (shift, control, alt modifiers etc)