I need to use a for-loop to find strings in an array that have the same word in them C#

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I need to find a way to use a for-loop to find how many strings that are the same word in the same array-list. I need to use the for-loop because everytime it loops and finds another word that is the same I want to add it to an int variable :
the following is the code that have tried to use but it didn;t work:

What I have tried:

C#

foreach (string row in RoomType)
{
    if (row.Equals("Bedroom"))
    {
        bedrooms++;
    }
}

Posted 28-Feb-17 8:49am

Member 13029506

Updated 28-Feb-17 10:02am

Graeme_Grant

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Patrice T 28-Feb-17 15:26pm

Show code that set variable 'RoomType', we can see some running code.

[no name] 28-Feb-17 16:02pm

Yeah.... "didn't work" is not at all helpful in describing your problem.

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Graeme_Grant · Answer 1 · 2017-02-28T09:03:00

There was a "Coding Challenge" recently that did something very similar: Coding challenge: find the repeated items in a collection of elements.[^]

From Solution 11[^] :

C#

public static class HelperExtension
{
    public static IEnumerable<T> GetRepeats<T>(this IList<T> items)
        => items?.Intersect(
               items.Where(x => items.Where(y => Equals(x, y)).Count() > 1));
}

This works with a List and not an array but would not be hard to modify. The extension method will take a list of words and gives you the repeats.

Ralf Meier · Answer 2 · 2017-02-28T09:09:00

Solution 2

You could also try :

C#

foreach (string row in RoomType)
{
if (row.Contains("Bedroom"))
{
bedrooms++;
}
}

Posted 28-Feb-17 9:09am

Ralf Meier

Comments

Patrice T 28-Feb-17 16:03pm

Just copying the code from the question is not a solution.
Please delete

CHill60 28-Feb-17 16:37pm

To be fair Ralf has used Contains and not Equals

Patrice T 28-Feb-17 17:00pm

Oops

CHill60 28-Feb-17 17:08pm

:-)

Ralf Meier 1-Mar-17 8:11am

Yes ... beacause I understand that the searched String is part the Source-String and not equal to it ...

Graeme_Grant · Answer 3 · 2017-02-28T09:33:00

Here is another solution using Linq:

C#

var values = new string[6] { "red", "green", "blue", "red", "red", "green" };
foreach (var item in values.GroupBy(x => x).Where(g => g.Count() > 1).Select(g => new { Value = g.Key, Count = g.Count() }))
    Debug.WriteLine($"{item.Value} x {item.Count}");

Patrice T · Answer 4 · 2017-02-28T10:02:00

Quote:
I need to use the for-loop because everytime it loops and finds another word that is the same I want to add it to an int variable :

I fear you misunderstood the usage of the for-loop and that you want to use it for the wrong reason.
You need a for-loop because you need to check every element of RoomType against a reference word, not because you want to count how many times you encounter the word.

Basically, I see nothing wrong in your code, but without the code around, it is difficult to really tell.
Complete code with a sample of what is in Roomtype.

I need to use a for-loop to find strings in an array that have the same word in them C#

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