I've got the following Problem:
I want to take parts of a string into an array. So far no problem (splitstring),
but, I can't use splitstring because it takes my operators out.
Explained on an example:
Following string: "47-62*5141"
I need it like this: {"47", "-", "62", "*", "5141"}
If you could give me a code example, I would be very pleased!
Just split according to the word boundary which exist at the middle.
Regex.Split(string, @"(?!^)\b(?!$)");
@"\w+|\W+"I've made a little uglycode. But it works.
class Program
{
static void Main(string[] args)
{
var text = "47-62**5141";
var splittedText = text.SplitAndKeepSeparator('-', '*');
foreach (var part in splittedText)
{
Console.WriteLine(part);
}
Console.ReadLine();
}
}
public static class StringExtensions
{
public static IEnumerable<string> SplitAndKeepSeparator(this string s, params char[] seperators)
{
var parts = s.Split(seperators, StringSplitOptions.None);
var partIndex = 0;
var isPart = true;
var indexInText = 0;
while (partIndex < parts.Length)
{
if (isPart)
{
var partToReturn = parts[partIndex];
if (string.IsNullOrEmpty(partToReturn))
{
partToReturn = s[indexInText].ToString();
}
else
{
isPart = false;
}
indexInText += partToReturn.Length;
partIndex++;
yield return partToReturn;
}
else
{
var currentSeparator = s[indexInText];
indexInText++;
isPart = true;
yield return currentSeparator.ToString();
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
string[] parts = new string[100];
var text = "47-62*5141";
int i = 0;
var splittedText = text.SplitAndKeepSeparator('-', '*', '+', '/');
foreach (var part in splittedText)
{
parts[i] = part;
i++;
}
Console.ReadLine();
Console.WriteLine(parts[0]);
Console.WriteLine(parts[1]);
Console.WriteLine(parts[2]);
Console.WriteLine(parts[3]);
Console.ReadLine();
}
}
}
public static class StringExtensions
{
public static IEnumerable<string> SplitAndKeepSeparator(this string s, params char[] seperators)
{
var parts = s.Split(seperators, StringSplitOptions.None);
var partIndex = 0;
var isPart = true;
var indexInText = 0;
while (partIndex < parts.Length)
{
if (isPart)
{
var partToReturn = parts[partIndex];
if (string.IsNullOrEmpty(partToReturn))
{
partToReturn = s[indexInText].ToString();
}
else
{
isPart = false;
}
indexInText += partToReturn.Length;
partIndex++;
yield return partToReturn;
}
else
{
var currentSeparator = s[indexInText];
indexInText++;
isPart = true;
yield return currentSeparator.ToString();
}
}
}
}