Remove string Array that contain certain character-CodePudding

I have an array and a variable :

string[] StringArray = { "foo bar foo $ bar $ foo bar $" };
string check = "$";

And I want to remove the "$" so the output will be :

foo bar foo bar foo bar

CodePudding user response：

How about using linq?

string[] StringArray = { "foo bar foo $ bar $ foo bar $" };
string check = "$";

var noDollaBillsYall = StringArray.Select(x => x.Replace(check, string.Empty)).ToArray();

CodePudding user response：

You could iterate across the array with a for each, and use replace to replace the $ character with nothing.

for(int i = 0;i < StringArray.Length;i  ) {
StringArray[i] = StringArray[i].Replace(“$”,””);
}

I can’t guarantee that this will work by itself, as I am not at my computer, but this is the basic idea.

CodePudding user response：

i would try using a foreach to loop around the array and a stringBuilder. inside the foreach write if(element == '$') continue. else append it to the string builder.

if you wanna try this i'd write u the code lmk

CodePudding user response：

If you are trying to initialize an array with multiple string, then your initialization is wrong, if that is the case, this implementation should work:

        string[] StringArray = { "foo", "bar", "foo", "$", "bar", "$", "foo", "bar", "$" };
        string check = "$";

        var stringList = StringArray.ToList();

        stringList.RemoveAll(x => x == check);

        StringArray = stringList.ToArray();

CodePudding user response：

Found an answer. I use .Replace to remove the desired character. This is my solution :

  string[] StringArray = { "foo bar foo $ bar $ foo bar $" };

  foreach(var result in StringArray)
  {
      Console.WriteLine(result.Replace('$',' ').ToString());
  }

Maybe any of you find more efficient way, I'm really appreciate it if you would to tell me

CodePudding user response：

Quite an intersting task; assuming that you want to process each item we can use Linq. Another problem is it seems that we can't just replace / remove $: we should control spaces as well, e.g.

Given:

   "$  foo bar foo $ bar $ foo bar $"

Naive removing: (e.g. item => item.Replace("$", string.Empty))

   "  foo bar foo  bar $ foo bar " <- note spaces

Actual requirement:

   "foo bar foo bar foo bar"

We can cope with spaces with a help of Regular Expressions:

using System.Linq;
using System.Text.RegularExpressions;

...

string[] StringArray = { "$  foo bar foo $ bar $ foo bar $" };

string[] result = StringArray
  .Select(item => Regex.Replace(
     item,
    @"\s*\$\s*",
     m => m.Index == 0 || m.Index   m.Length == item.Length ? "" : " "))
  .ToArray();