Question

I want to sort a fixed set of strings like “Text files”, “Image files”, “Audio files”, “Video files”, “Application Files”, “Other files” in a string array in the same order I have mentioned.

Example1, if my string array input is like this

inputval[0] = "Other files";
inputval[1] = "Image files";
inputval[2] = "Text files";

my output array should have values like this

outputval[0] = "Text files";
outputval[1] = "Image files";
outputval[2] = "Other files";

Example 2, if my string array input is like this

inputval[0] = "Application files";
inputval[1] = "Image files";
inputval[2] = "Video files";

my output array should have values like this

outputval[0] = "Image files";
outputval[1] = "Video files";
outputval[2] = "Application files";

Please can somebody help me in achieving this

Answer 1

Since not very much is clear from what you want. So i have taken into consideration that there will be no repetitions in inputval.

string[] fixed_array =  { "Text files", "Image files", "Audio files", 
                        "Video files", "Application Files", "Other files" };

Let us say

inputval[0] = "Other files";
inputval[1] = "Image files";
inputval[2] = "Text files";

Do this

string[] outputval =
          fixed_array.Select(x => inputval.Contains(x) ? x : "-1")
                     .Where(x => x != "-1").ToArray();

So outputval will be

outputval[0] = "Text files";
outputval[1] = "Image files";
outputval[2] = "Other files";