Count Text in a String

Question

I have a string in .NET like so:

string str = "Lorem ipsum is great. lorem ipsum Lorem...";

I need to get a count of all "Lorem" that matches case as well. So Lorem should appear twice and ignore the lorem.

Thanks.

In your text theres only one "Lorem" if you take the case into account. — Tim Schmelter, Oct 22 '12 at 21:04
What about having "Loremo" instead of "Lorem", does it count? — Francis P, Oct 22 '12 at 21:05
Maybe this question can be merged with this: http://stackoverflow.com/questions/3016522/count-the-number-of-times-a-string-appears-within-a-string — Duccio Fabbri, Oct 22 '12 at 21:11

score 8 · Accepted Answer · edited Oct 22 '12 at 21:11

8

string str = "Lorem ipsum is great. lorem ipsum Lorem...";
string word = "Lorem";
Console.WriteLine(Regex.Matches(str,word).Count);

edited Oct 22 '12 at 21:11

Francis P

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answered Oct 22 '12 at 21:09

skjcyber

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Tim Schmelter · Answer 2 · 2012-10-22T21:15:33.573

6

You can use Linq.

String searchWhat = "Lorem";
int count = str.Split(new[]{' ','.'}, StringSplitOptions.None)
               .Count(w => w == searchWhat);

demo: http://ideone.com/a9XHln

Edit: You have commented that "Lorem Loremo" would count as two, so you want to count all occurences of a given word(case-sentive) even if that word is part of another word. Then you could use String.Contains:

int count = str.Split(new[]{' ','.'}, StringSplitOptions.None)
               .Count(w => w.Contains(searchWhat));

demo: http://ideone.com/fxDGuf

edited Oct 22 '12 at 21:15

answered Oct 22 '12 at 21:06

Tim Schmelter

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What if 'str = "Lorem ipsum Lorem. Lorem l"? You'd get 2, not three. – neeKo Oct 22 '12 at 21:08
I admit, it's not true anymore. What about other punctuation? Question comments also indicate that Loremo would have to match (although the comment is a bit ambiguous). – neeKo Oct 22 '12 at 21:12
@NikoDrašković: Edited the answer to take that into account. – Tim Schmelter Oct 22 '12 at 21:17
I still don't think its complete: http://ideone.com/EXpBRr . Also, sorry about the nitpicking. Too bad OP isn't here to clarify what he actually wants. – neeKo Oct 22 '12 at 21:25
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@NikoDrašković: Of course you can add a `Char[]` with all allowed delimiters between words. The accepted answer is better if OP doesn't want to count words but occurences(even multiple "Lorem" in a single word like "LoremoLorem"). But that's a different approach and requirement. – Tim Schmelter Oct 22 '12 at 21:37

Francis P · Answer 3 · 2012-10-22T21:18:26.710

0

Can be done using Linq:

string str = "Lorem ipsum is great. lorem ipsum Lorem...";
int loremCount = str.Split(new[]{' ','.',','}, StringSplitOptions.None).Count(s => s.Equals("Lorem"));

If you want to consider "Loremo":

int loremCount = str.Count(s => s.Equals("Lorem"));

edited Oct 22 '12 at 21:18

answered Oct 22 '12 at 21:06

Francis P

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score 0 · Answer 4 · answered Oct 22 '12 at 21:14

Here's my 2 cents. It will find all instances of "Lorem" case sensative, but it will return a count for things that have "Lorem" in it, like "Loremo" or "thismightnotLorembewhatyouwant".

The question was a bit vague so this answer is a quick solution that conforms to what you requested.

string test = "Lorem ipsum is great. lorem ipsum Lorem...";

int pos = -1;
int count = 0;
while ((pos = test.IndexOf("Lorem", pos+1)) != -1)
    count++;

score 0 · Answer 5 · answered Oct 22 '12 at 21:16

If you want this to be able to perform other operations, you can dump the entire string into a List and then you could run Linq queries off off that list.

var phrase = "Lorem ipsum...";
var wordList = phrase.Split(' ').ToList();
var loremCount = wordList.Where(x => x.ToLower() == "lorem").Count();

This way wordList is reusable.

score 0 · Answer 6 · edited Oct 22 '12 at 21:51

0

Use the below code:

using System.Text.RegularExpressions;

string text = "Lorem ipsum is great. lorem ipsum Lorem...";
int count = new Regex("Lorem").Matches(text).Count;

Hope it will help you. If not please let me know.

edited Oct 22 '12 at 21:51

Adi Lester

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answered Oct 22 '12 at 21:31

Hasinur

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Count Text in a String

6 Answers6