c# searching an arraylist

Question

In my code i have an arraylist called array.

I have filled it with numbers from 1 to 13

for(int i =1; i< 14; i++)
{
  array.items.Add(i)
}

Later in my code I also remove some of the elements at random. Example array.remove(3);

Now I wanna search, how many values of the elements in the arraylist is over specific number.

So, how many elements in the arraylist is over for example 5.

Anyone who knows how to do this?

Thanks!

Why use an ArrayList? This would be much easier with a List<int>. — Henk Holterman
– Henk Holterman, Commented Jun 13, 2011 at 11:34
I would like to use an arraylist in this project. Thanks for your tip though! — laz
– laz, Commented Jun 13, 2011 at 11:39

R. Martinho Fernandes · Accepted Answer · 2011-06-13 11:43:24Z

5

Use this lambda expression:

int count = array.Cast<int>().Where(e=> e > 5).Count();

or even simpler:

int count = array.Cast<int>().Count(e=> e > 5);

You must be from Java right? I believe that you should use a List<T> in c#.

edited Jun 13, 2011 at 11:43

R. Martinho Fernandes

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answered Jun 13, 2011 at 11:34

Jean-Philippe Leclerc

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Comments

NinjaNye · Accepted Answer · 2011-06-13 21:39:23Z

1

int count = array.Cast<int>().Count(x => x > 5);

OR change your arrayList to be an enumerable to allow.

int count = array.Count(x => x > 5);

edited Jun 13, 2011 at 21:39

answered Jun 13, 2011 at 11:46

NinjaNye

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Comments

R. Martinho Fernandes · Accepted Answer · 2011-06-13 11:36:56Z

0

array.Cast<int>().Where(item => item > 5).Count();

edited Jun 13, 2011 at 11:36

R. Martinho Fernandes

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answered Jun 13, 2011 at 11:34

Andrew Cooper

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