C# count each element in string array

Question

I have file of such data:

2016-07-01 - this is data
39
40
36
37
40
37

I want to count each elements in my array. For example: 10, 2, 2, 2, 2, 2, 2. How do that?

        string FilePath = @"path";
        int counteachelement = 0;
        string fileContent = File.ReadAllText(FilePath);
        string[] integerStrings = fileContent.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
        for (int n = 0; n < integerStrings.Length; n++)
        {
           counteachelement = integerStrings.GetLength(n);
           Console.Write(counteachelement + "\n");
        }

`Array.GetLength` returns the number of elements in the specified dimension. You have a `string[]` with only one dimension so this is useless. You can use `integerStrings.Length` — Tim Schmelter, Jul 01 '16 at 08:00

score 3 · Answer 1 · answered Jul 01 '16 at 07:59

3

how about

List<int> Result = integerStrings.Select(x => x.Length).ToList();

answered Jul 01 '16 at 07:59

fubo

44,811
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Souvik Ghosh · Accepted Answer · 2016-07-01T08:16:22.633

Here I have modified your code to get the count of each element inside the for loop that you are using-

        string FilePath = @"path";
        int counteachelement = 0;
        string fileContent = File.ReadAllText(FilePath);
        string[] integerStrings = fileContent.Split(new char[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
        int count = 0;
        for (int n = 0; n < integerStrings.Length; n++)
        {
            count = integerStrings[n].Length;
        }

score 1 · Answer 3 · answered Jul 01 '16 at 08:11

You can use File.ReadLines() to avoid holding all the lines in memory at once, and then simply use Enumerable.Select() to pick out the length of each line. (This assumes that you are not ignoring or do not have any blank lines):

var lengths = File.ReadLines(FilePath).Select(s => s.Length);
Console.WriteLine(string.Join("\n", lengths));

Tran Anh Hien · Answer 4 · 2016-10-11T07:56:08.367

1

You can use javascript:

 
var arr=["39","9","139"];
var temp="";
for(i=0;i<arr.length;i++)
 temp += (arr[i].length) + ", ";
alert("Lenght element array: " +temp.toString());

edited Oct 11 '16 at 07:56

answered Jul 01 '16 at 08:39

Tran Anh Hien

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Kahbazi · Answer 5 · 2016-07-01T10:15:49.220

0

You can use Linq to do this

List<string> list = new List<string>();

list.Add("39");
list.Add("40");
list.Add("36");
list.Add("37");
list.Add("40");
list.Add("37");
list.Add("39");

var output = list.Select(i => i.Length);

Console.WriteLine(string.Join(" ",output));
//"2 2 2 2 2 2 2"

edited Jul 01 '16 at 10:15

answered Jul 01 '16 at 08:00

Kahbazi

14,331
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score 0 · Answer 6 · answered Jul 01 '16 at 08:00

0

string[] contents = File.ReadAllLines(@"myfile.txt");
foreach(var line in contents)
{
  line.Length // this is your string length per line
}

answered Jul 01 '16 at 08:00

score 0 · Answer 7 · answered Jul 01 '16 at 08:02

0

You can do,

var str = "2016-07-01 - this is data,39,40,36,37,40,37,";
var Result = str.Split(',').Select(p => p.Count()).ToList();

Note: I am considering your input as comma separated values.

answered Jul 01 '16 at 08:02

Anoop Joshi P

25,373
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C# count each element in string array

7 Answers7