Remove First and Last Specific Char

Question

I dont know is that duplicate or not,but i not found same(maybe i not found because it got hard title)

So,i have a this string:

string a = "(Hello(World),World(Hello))";

And i need to remove a first Bracket,and last Bracket. And get that output:

Hello(World),World(Hello)

I not need to remove first char and last. I need to remove first specific char(bracket) and last specific char(close bracket).

That says,if string is be:

string a = "gyfw(Hello(World),World(Hello))";

Output is be: gyfw Hello(World),World(Hello)

See [here](https://stackoverflow.com/questions/42964150/how-to-remove-first-and-last-character-of-a-string-in-c): a = a.Substring(1, a.Length - 2); — alxnull, Sep 15 '18 at 18:28
We know the bracket is the last one, so `a.Substring(0, a.Length - 1)` will remove the last one. For the second part, a simple google search yielded: https://stackoverflow.com/questions/141045/how-do-i-replace-the-first-instance-of-a-string-in-net — Blue, Sep 15 '18 at 18:35
quanik,Nope,i not need to remove first and last char,like `(hello)` to `hello`. I need to remove first bracket and last bracket,like `a(hi);` to `a hi ;` — Qrai, Sep 15 '18 at 18:36
FrankerZ,okay that ok to Replace First Bracket.Can explan how to remove last? — Qrai, Sep 15 '18 at 18:38

score 1 · Accepted Answer · edited Sep 16 '18 at 03:28

1

To remove first specific char:

a = a.Remove(a.IndexOf("("), 1);

To remove last specific char:

a = a.Remove(a.LastIndexOf(")"), 1);

edited Sep 16 '18 at 03:28

Qrai

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answered Sep 15 '18 at 18:38

alxnull

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i will try,wait – Qrai Sep 15 '18 at 18:41
that works,but only removes first bracket. Last bracket is still not removed – Qrai Sep 15 '18 at 18:48
@Qrai The first line removes the **first** occurrence of an **opening** bracket, the second line removes the **last** occurrence of a **closing** bracket. If that's not what you wanted, try to adjust the removed chars to your needs. – alxnull Sep 15 '18 at 18:53
OKAY,IT WORKS NOW – Qrai Sep 15 '18 at 19:02

score 0 · Answer 2 · answered Sep 15 '18 at 18:43

In a balanced way, it can be done with this regex

Find @"$((?>[^()]+|\((?<Depth>)|$(?<-Depth>))*(?(Depth)(?!)))\)"
Replace @"$1"

If it is required to have inner parens change the * to a +.
If it is required that it should only match once and span the string, add ^ and $ to beginning / end respectively to the regex.

Here is the regex explained

 \(                            #  Match ( a open parenth
 (                             # (1 start), Capture the core, to be written back

      (?>                           # Then either match (possessively):

           [^()]+                        # Any character except parenths
        |                              # or
           \(                            # Open (  increase the paren counter
           (?<Depth> )
        |                              # or
           \)                            # Close )  decrease the paren counter
           (?<-Depth> )
      )*                            # Repeat as needed.
      (?(Depth)                     # Assert that the paren counter is at zero.
           (?!)
      )

 )                             # (1 end)
 \)                            # Match ) a closing parenth

Im so nub to Regex Can u show code with find and replace functions Regex.Find ? Regex.Replace ? — Qrai, Sep 15 '18 at 18:52
@Qrai - Since you've been a member for 8 months, I'm sure you know that SO is not a code writing service. So, sorry, no _code_ for you. I can give you a link to C# overview where you can navigate to code examples. — , Sep 17 '18 at 19:19

score -1 · Answer 3 · edited Sep 15 '18 at 18:32

-1

Use the String.Substring() method to remove specific character.

So, if your string is stored in a variable myval:

myval = myval.Substring(1, myval.Length - 1);

edited Sep 15 '18 at 18:32

Blue

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answered Sep 15 '18 at 18:26

Akshay Jain

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I dont understand your answer. I need to remove a first BRACKET,not just char. And LAST BRACKET in string,not just last char. – Qrai Sep 15 '18 at 18:32
Easy way to your answer is: myval.Replace(@"(", string.Empty); – Akshay Jain Sep 15 '18 at 18:34
Did you get this answer – Akshay Jain Sep 15 '18 at 18:35
that will remove all BRACKETS! i need to remove the one first and last – Qrai Sep 15 '18 at 18:37
Store your string into variable and then remove your brackets and then use it in your code. So, I think that will be appropriate. Try for this once – Akshay Jain Sep 15 '18 at 18:39

Remove First and Last Specific Char

3 Answers3