problems with for loop string

Question

I'm new to programming in c# and I'm trying to figure out how I could potentially reverse all words except words containing e in a string.

my current code will detect words containing e, and just writes them down in another textbox:

string text = txbInput.Text;
            var words = text.Split(' ');
            for (int i = 0; i < words.Length; i++)
            {
                if (words[i].Contains('e'))
                {
                   txbOutput.Text += words[i];
                }

Current:

Input: chicken crossing the road

Output: chickenthe

.

Expected outcome:

Input: chicken crossing the road

Output chicken gnissorc the daor

Possible duplicate of [To reverse a string](https://stackoverflow.com/questions/228038/). — Dour High Arch, May 09 '19 at 22:01
@DennisTanahatoe you're not, but that question shows how you can do it with a string, so just pass to the method there the strings that do not have an `e` in it?!?! — Prix, May 09 '19 at 22:07

score 3 · Answer 1 · answered May 09 '19 at 22:17

3

You can simply split the word on the space character, then, for each word, select either the word itself, or the word reversed (depending on whether or not it contains the 'e' character), and then join them back together again with the space character:

txbOutput.Text = string.Join(" ", txbInput.Text.Split(' ')
    .Select(word => word.Contains("e") ? string.Concat(word.Reverse()) : word));

answered May 09 '19 at 22:17

Rufus L

36,127
5
30
43

Superb. Neat & elegant! – betelgeuce May 09 '19 at 22:18
[If anyone is curious about the ?: operator (ternary)](https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/operators/conditional-operator) – Jack Casey May 09 '19 at 22:51

betelgeuce · Accepted Answer · 2019-05-09T23:09:20.577

Outputs: chicken gnissorc the daor

using System;


namespace ConsoleApp4
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = "chicken crossing the road";

            foreach (var item in input.Split(' '))
            {
                if (item.Contains('e'))
                {
                    Console.Write(item + ' ');
                }
                else
                {
                    Console.Write(Reverse(item) + ' ');
                }
            }
        }

        public static string Reverse(string s)
        {
            char[] charArray = s.ToCharArray();
            Array.Reverse(charArray);
            return new string(charArray);
        }
    }
}
enter code here

EDIT

 foreach (var item in input.Split(' '))
    {
        if (item.Contains('e'))
        {
            txbOutput.Text = txbOutput.Text+ item + ' ';
        }
        else
        {
            txbOutput.Text= txbOutput.Text+ Reverse(item) + ' ';
        }
    }

`Array.Reverse(s.ToCharArray())` [does not reverse strings](https://stackoverflow.com/questions/228038/). — Dour High Arch, May 09 '19 at 22:09
The question starts out with "I am new to programming..". I think it is important to work with simple and understandable answers to introduce core concepts. — betelgeuce, May 09 '19 at 22:16
What could I potentially add, in order to ignore the special characters? — Saimoyi, May 16 '19 at 08:54

score 0 · Answer 3 · answered Jul 02 '22 at 07:51

0

You can try using the following code -

string.Join(” “,
      str.Split(‘ ‘)
         .Select(x => new String(x.Reverse().ToArray()))
         .ToArray());

Copied from - https://www.declarecode.com/code-solutions/csharp/caprogramtoreverseeachwordinthegivenstring

answered Jul 02 '22 at 07:51

John Scott

1
1

Are you affiliated with the Declare Code blog? – Jeremy Caney Jul 03 '22 at 00:36
@JeremyCaney no why? – John Scott Jul 20 '22 at 14:39

problems with for loop string

3 Answers3