I have a string as listed below.
string sample = " class0 .calss1 .class2 .class3.class4 .class5 class6 .class7";
I need to create a list of WORDS from this sample string.
A WORD is a string that starts with a period and ends with:
Note: The key point here is - the splitting is based on two criteria - a period and a blank space
I have following program. It works fine. However, is there a simpler/more efficient/concise approach using LINQ
or Regular Expressions
?
CODE
List<string> wordsCollection = new List<string>();
string sample = " class0 .calss1 .class2 .class3.class4 .class5 class6 .class7";
string word = null;
int stringLength = sample.Length;
int currentCount = 0;
if (stringLength > 0)
{
foreach (Char c in sample)
{
currentCount++;
if (String.IsNullOrEmpty(word))
{
if (c == '.')
{
word = Convert.ToString(c);
}
}
else
{
if (c == ' ')
{
//End Criteria Reached
word = word + Convert.ToString(c);
wordsCollection.Add(word);
word = String.Empty;
}
else if (c == '.')
{
//End Criteria Reached
wordsCollection.Add(word);
word = Convert.ToString(c);
}
else
{
word = word + Convert.ToString(c);
if (stringLength == currentCount)
{
wordsCollection.Add(word);
}
}
}
}
}
RESULT
foreach (string wordItem in wordsCollection)
{
Console.WriteLine(wordItem);
}
Reference:
You can do this with a regular expression.
Code
Regex regex = new Regex(@"\.[^ .]+");
var matches = regex.Matches(sample);
string[] result = matches.Cast<Match>().Select(x => x.Value).ToArray();
See it working online: ideone
Result
.calss1
.class2
.class3
.class4
.class5
.class7
Explanation of Regular Expression
\. Match a dot [^. ]+ Negative character class - anything apart from space or dot (at least one)
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