How to make a array smaller and move every value one place down-CodePudding

Here is the array

                string[] Numbers = new string[5] { "1", "2", "", "3", "4" };

As you can see I have 1 item that has nothing in it. What I'm trying to do is make the array smaller and move, everything after the clear space, 1 down. I'm also going to use it for a bigger array. But it will always have just 1 clear space.

{"1", "2", "3", "4"}

This is what I'm trying to get.

Here are the variables

int intSelected, intCounter = 1, intAmount = Numbers.length;

And here is the code

        while (true)
        {
            Numbers[intSelected   intCounter] = Numbers[intSelected   intCounter - 1];

            if (intSelected   intCounter == intAmount)
            {
                Array.Resize(ref Numbers, Numbers.Length - 1);
                MessageBox.Show("It works");
                intAmount--;
                break;
            }
            else
            {
                intCounter  ;
            }
        }

CodePudding user response：

One of the simplest ways to do it is to use System.Linq to filter the undesired items out:

string[] Numbers = new string[5] { "1", "2", "", "3", "4" };
string[] ClearNumbers = Numbers.Where(e => !string.IsNullOrEmpty(e)).ToArray();

CodePudding user response：

No Linq solution (you've used Array.Resize in your code; let's correct it). We scan the array, copy items on empty spaces and, finally, resize the array:

string[] Numbers = new string[5] { "1", "2", "", "3", "4" };

...

int lastIndex = 0;

for (int i = 0; i < Numbers.Length;   i)
  if (!string.IsNullOrEmpty(Numbers[i])) // if Numbers[i] should be preserved...
    Numbers[lastIndex  ] = Numbers[i];   // ... Copy it to the lastIndex place 

Array.Resize(ref Numbers, lastIndex);