CODEWITHSUNDEEP
c#arraysstringc#-4.0split
SParc
SParc

Reputation: 1779

Remove substring from a string, split the result and store it in an array

My code is:

public void processData(string data)
{
       string com = data.Split(' ')[0];
       string[] val = data.Remove(0,com.Length).Split(' ');
}

What I want to achieve using this code is that when com stores the first word from the data variable, the val array should store the remaining words of the data variable. In 4th line of code, I achieved this by first removing the character from 0 index to the length of the first word. This will remove the first word and then it will split it according to whitespaces and then store the result in array. The problem is that this in not happening. the com is storing the first word but the val is showing always null. Please some one tell me what to do? I can achieve this using foreach loop or other techniques. But I don't want much code due to performance issues.

My example strings are like this:

begin main
timesteps 1750
weeks 250
campaigns 6
scenario 10
epsilon 0.01
powerplant1 11
powerplant2 10
constraint13 46
constraint14 7
constraint15 0
constraint16 1
constraint17 3
constraint18 0
constraint19 1
constraint20 1
constraint21 1
durations 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24

There are fields on left and values on right. I want to separately store them.

Example: field is timesteps and value is 1750

Solution:

This was pretty dumb solution but I just restarted my Visual Studio and it worked fine.

Thanks all for your nice responses. I +1 all answers and marked Blachshma answer since the suggestion to restart or recreate the project was came from him.

Upvotes: 0

Views: 8607

Answers (3)

Blachshma
Blachshma

Reputation: 17385

Use LINQ's Skip() 

string[] val = data.Split(' ').Skip(1).ToArray();

To emphasis with a string from your example:

string data = "timesteps 1750";
string com = data.Split(' ')[0]; // Returns timesteps
string[] val = data.Split(' ').Skip(1).ToArray(); // Returns 1750

Another of your examples:

string data = "durations 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24 24";

com will have "durations" and val will have an array of 16 elements, each with the value of "24"

Upvotes: 5

Tim Schmelter
Tim Schmelter

Reputation: 460098

I assume that it val does not show null but the first word is empty since you have removed the substring of the first word from the string, but you have not removed the separator(white-space).

So this should work(if you just want to remove the first word):

string[] val = data.Split().Skip(1).ToArray();

Upvotes: 1

Shaharyar
Shaharyar

Reputation: 12439

string[] val = data.Remove(0, data.IndexOf(' ') + 1).Split(' ');

Upvotes: 3

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