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

@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
– Prix, Commented May 9, 2019 at 22:07

littlerufe · Accepted Answer · 2019-05-09 22:17:01Z

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 9, 2019 at 22:17

littlerufe

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2 Comments

betelgeuce Over a year ago

Superb. Neat & elegant!

Jack Casey Over a year ago

If anyone is curious about the ?: operator (ternary)

betelgeuce · Accepted Answer · 2019-05-09 23:09:20Z

1

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) + ' ';
        }
    }

edited May 9, 2019 at 23:09

answered May 9, 2019 at 22:07

betelgeuce

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3 Comments

Dour High Arch Over a year ago

Array.Reverse(s.ToCharArray()) does not reverse strings.

betelgeuce Over a year ago

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.

Saimoyi Over a year ago

What could I potentially add, in order to ignore the special characters?

John Scott · Accepted Answer · 2022-07-02 07:51:40Z

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 2, 2022 at 7:51

John Scott

11 bronze badge

3 Comments

Jeremy Caney Over a year ago

Are you affiliated with the Declare Code blog?

John Scott Over a year ago

@JeremyCaney no why?

Pang Dec 27, 2024 at 3:41

Link in answer is dead - "DNS_PROBE_FINISHED_NXDOMAIN".

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