find and reverse digits

Question

I have a text file contained a series at digits and characters.that are separated by comma.how digits come be read and replaced reverse? file example:book215420idname4520

Jignesh Trivedi · Answer

Hi Try following code it might help you. string test = book215420idname4520; var splitData = test.Split(new char[] { '' }); string pattern = @^\d*$; List reverseData = new List (); foreach (string s in splitData) { if (Regex.IsMatch(s pattern)) { string re = string.Join( s.Reverse()); reverseData.Add(re); } else { reverseData.Add(s); } } Console.WriteLine(Original String: + test); Console.WriteLine(New String: + string.Join( reverseData));

Vulpes · Answer

Just thinking about it some more I think that reversing the second item : 14.210.333 should give : 33.301.241 rather than 333.012.41 because the latter is moving the position of the dots as well as reversing the digits and any non-digit should be unaffected by this maneuver. Similarly reversing the fourth item : 24.0000 should give : 00.0042 rather than 0000.42 So try this: using System; using System.Collections.Generic; class Program { static void Main() { string[] inputs = { book215420idname4520 41/20/3914.210.33317/26/2924.0000 }; string[] revInputs = new string[inputs.Length]; for(int i = 0; i { string[] items = inputs[i].Split(''); for(int j = 0; j { char[] chars = items[j].ToCharArray(); List indices = new List (); List digits = new List (); for(int k = 0; k { if(chars[k] >= '0' && chars[k] { indices.Add(k); digits.Add(chars[k]); } } digits.Reverse(); for(int k = 0; k { chars[indices[k]] = digits[k]; } items[j] = new string(chars); } revInputs[i] = String.Join( items); Console.WriteLine(revInputs[i]); } Console.ReadKey(); } } The output is: book024512idname0254 93/02/1433.301.24192/62/7100.0042

mohammad · Answer

93/02/14333.012.4192/62/710000.42

Vulpes · Answer

When you say that the digits should be reversed do you mean that the result should be: 14/02/9341.012.33371/62/9242.0000 or that it should be: 93/02/14333.012.4192/62/710000.42 or that it should be: 0000.4292/62/71333.012.4193/02/14 ?

mohammad · Answer

hi jignesh trivedi thanks for your answer my file digit such as 41/20/3914.210.33317/26/2924.0000 in addition to the abovethere so what do you do?

Pradeep Shet · Answer

Hi Mohammad First Split the text with  string[] strsplit = text.Split(new char[]{''}); You will get an array of string Now you can check each string whether its a number or characters Once done use Reverse() method to reverse the digits. Hope you got the answer. Mark it answered if it helped you.