find and reverse digits

mohammad

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:book,215420,id,name,4520

6 Replies

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Vulpes12y ago
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 =
{
"book,215420,id,name,4520",
"41/20/39,14.210.333,17/26/29,24.0000"
};

string[] revInputs = new string[inputs.Length];

for(int i = 0; i < inputs.Length; i++)
{
string[] items = inputs[i].Split(',');

for(int j = 0; j < items.Length; j++)
{
char[] chars = items[j].ToCharArray();
List indices = new List();
List digits = new List();

for(int k = 0; k < chars.Length; k++)
{
if(chars[k] >= '0' && chars[k] <= '9')
{
indices.Add(k);
digits.Add(chars[k]);
}
}

digits.Reverse();

for(int k = 0; k < indices.Count; 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:

book,024512,id,name,0254
93/02/14,33.301.241,92/62/71,00.0042
mohammad12y ago
93/02/14,333.012.41,92/62/71,0000.42
Vulpes12y ago
When you say that the digits should be reversed, do you mean that the result should be:

14/02/93,41.012.333,71/62/92,42.0000

or that it should be:

93/02/14,333.012.41,92/62/71,0000.42

or that it should be:

0000.42,92/62/71,333.012.41,93/02/14 ?
mohammad12y ago
hi jignesh trivedi
thanks for your answer
my file digit such as 41/20/39,14.210.333,17/26/29,24.0000 in addition to the above,there
so what do you do?
Jignesh Trivedi12y ago
Hi,
Try following code it might help you.

string test = "book,215420,id,name,4520";
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));
Pradeep Shet12y ago
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.