How to see if string contains two Ks and remove the last one.

[quickgun33]

I am writing a parse system, and I want to go in and check a string for multiple Ks to be exact a K at the beginning and one at the end, if it does have a K at the end of the string I want to remove that K. I don't have an exact size of my string. I know how to remove the last K but not how to check the string for the multiple K's.

This is what I have:

            if (poNumber.Contains("K...K"))
                poNumber.Remove(poNumber.Length - 1,1);

I know that the first part will not work the way I want it to.

[quickgun33]

I figured this out if anyone wanted to see how here are my results

   if (poNumber.EndsWith("K"))
   {
      poNumber = poNumber.Remove(poNumber.Length - 1,1);
      this.textBox10.Text = poNumber;
   }
   else
      this.textBox10.Text = poNumber;

[weaknessforcats]

Scan the string and look at each character and if it is a K then increment a counter.

[quickgun33]

weaknessforcats

Scan the string and look at each character and if it is a K then increment a counter.

That won't work weakness, I am reading through a PDF417 barcode, it has over 90 characters and multiple ones are K, the minor string I parsed out the poNumber will have at least one K but if the last character is the K I have to remove it. Otherwise I end up storing false data from my barcode.

[quickgun33]

I don't want to mess with any of the other Ks in the poNumber string just that last one.

[weaknessforcats]

I was trying to detect mutiple K's. If the counter ends up with a numer other than 1 you have multiple K's. This says nothing about the position of the K's.

What kind of string is this? A C string with a \0 termminator or a C++ Standard Library string object?

Obviously, you can tell if the first character is a K
The last character being is the one before the terminator. You remove it by a) storing a \0 on top of it if youhave a C string or b) delete the character at size()-1 if it's a C++ Standard Library string object.

[quickgun33]

I am using C# language, my method worked, I have only been using C# for a month and a couple days now, and have never used it before so some of the language specifics I don't know. For example I didn't know about the EndsWith() function.