Get the value of array using c#

Question

I got an array

string [] strings = new string[] {"1", "2", "2", "2", "1"};

You can see the value of the array is just 1 and 2, just 2 values, you could say, and I want to get those value out...What I did is here, just a start:

string[] strings = new[] { "1", "2", "2", "2", "1"};
int[] ints = strings.Select(x => int.Parse(x)).ToArray();

I don't what is next...Anyone helps?

*I don't what is next?* What do you want to do with the extracted `int[]`? — Yuval Itzchakov, May 13 '15 at 14:58

score 4 · Answer 1 · answered May 13 '15 at 14:59

4

You mean you just want an array int[] {1, 2}?

string[] strings = new[] { "1", "2", "2", "2", "1"};
int[] ints = strings.Select(int.Parse).Distinct().ToArray();

answered May 13 '15 at 14:59

Charles Mager

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score 2 · Accepted Answer · answered May 13 '15 at 14:59

2

You may simply add a distinct to get the unique values:

int[] ints = strings.Select(x => int.Parse(x)).Distinct().ToArray();

Thus your array contains the elements {1, 2}

answered May 13 '15 at 14:59

MakePeaceGreatAgain

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Nice,,Thanks a lot~~~ – Eleanor May 13 '15 at 15:05

score 1 · Answer 3 · answered May 13 '15 at 15:01

Classic way:

        string[] strings = new[] { "1", "2", "2", "2", "1" };
        List<int> items = new List<int>();

        for (int i = 0; i < strings.Length; i++)
        {
            int item = int.Parse(strings[i]);

            if (!items.Contains(item))
                items.Add(item);
        }

Get the value of array using c#

3 Answers3