CODEWITHSUNDEEP
c#string
Tagi
Tagi

Reputation: 302

How convert values in line c#

input (string) : 1 2 3 4 5

I want be : 

string line = "1 2     3  4          5";
list<int>list = new list<int>();
list.Add(1);
list.Add(2);
list.Add(3);
list.Add(4);
list.Add(5);

Upvotes: 1

Views: 107

Answers (5)

Rajshekar Reddy
Rajshekar Reddy

Reputation: 18987

Try this using lambda expression and string split

string line = "1 2     3  4          5";

List<int> list= line.Split(" ").Where(x => x.Trim().length > 0).Select(x => Convert.ToInt32(x)).ToList();

Upvotes: 0

BrunoLM
BrunoLM

Reputation: 100331

You can split the line on spaces removing empty matches with StringSplitOptions.RemoveEmptyEntries.

string line = "1 2     3  4          5";

var list = line.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)
    .Select(n => Convert.ToInt32(n)).ToList();

So the result will have only the numbers then you can convert to int.

Upvotes: 0

Fᴀʀʜᴀɴ Aɴᴀᴍ
Fᴀʀʜᴀɴ Aɴᴀᴍ

Reputation: 6251

You can convert multiple spaces to single ones and then split on ' ':

var result = Regex.Replace(line, @"\s+", " ").Split(' ').Select(x => int.Parse(x.ToString())).ToList();

Or directly select all numbers by one of these Regexes:

\d{1}   --> If the numbers will always consist of a single digit.
\d+     --> If the numbers might contain more than one digit.

Like this:

var result = new List<int>();
foreach (Match i in Regex.Matches(line, @"\d{1}")) // Or the other Regex...
{
    result.Add(int.Parse(i.Value));
}

Upvotes: 0

Christian Schnepf
Christian Schnepf

Reputation: 300

You can use the Split method with the StringSplitOptions overload:

string line = "1 2     3  4          5";
char[] delim = {' '};
var list = line.Split(delim, StringSplitOptions.RemoveEmptyEntries)
    .Select(i => Convert.ToInt32(i)).ToList();

RemoveEmptyEntries will skip over the blank entries and your output will be:

List<Int32> (5 items)
1 
2 
3 
4 
5

See String.Split Method on MSDN for more info.

Upvotes: 1

Bas
Bas

Reputation: 27095

You may use a Regular Expression to identify the occurrences of integer numbers within the text. Here's a working example.

This may prove to be much more reliable depending on your scenario, e.g. you could type arbitrary words/text in there, and it would still find all numbers.

The C# code to do this would be as follows:

List<int> FindIntegers(string input) 
{
   Regex regex = new Regex(@"(\d+)");
   List<int> result = new List<int>();
   foreach (Match match in regex.Matches(input))  
   {
       result.Add(int.Parse(match.Value));
   }
   return result;
}

Upvotes: 1

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