How do i split a text 2 by 2?

Question

The variable is: Hello The result I want:

split[0] = he;
split[1] = ll;
split[2] = o + ( space );

I tried this code:

string[] split = new string[text.Length / 2 + (text.Length % 2 == 0 ? 0 : 1)];
for (int i = 0; i < split.Length; i++)
{
  split[i] = text.Substring(i, i + 2 > text.Length ? 1 : 2);
}

The output is "He el lo" (it doubles the second character).

You may want to add your programming language as tag to your question. — Holger Just, Aug 17 '21 at 12:00
Hint: run the code mentally, on a piece of paper. And note: it would help if you specified the language you are using, for example using the corresponding tag. And: you could make your life much easier if you just added a " " space in case the length of your input isnt even. — GhostCat, Aug 17 '21 at 12:01
And hint: check out your code, and ask yourself what values `i` will go to. And what values it *should* go to. — GhostCat, Aug 17 '21 at 12:02
I don't get why "Hello" gets split this way. Where does the extra space come from? Was it in the original string? Or is it just used as padding for when there is an odd number of characters? — Sweeper, Aug 17 '21 at 12:09
If the variable.lenght / 2 haves decimals, then it adds space on variable — GDD Hyper, Aug 17 '21 at 12:10
Does this answer your question? [Splitting a string / number every Nth Character / Number?](https://stackoverflow.com/questions/4133377/splitting-a-string-number-every-nth-character-number) — Trevor, Aug 17 '21 at 12:11

score 0 · Answer 1 · answered Aug 17 '21 at 13:29

Try this:

string input = "Hello"
string[] split = new string[input.Length / 2 + (input.Length % 2 == 0 ? 0 : 1)];
for (int i = 0; i < input.Length; i+=2)
{
    split[i/2] = input.Substring(i, i + 2 > input.Length ? 1 : 2);
}

This steps through the input string in increments of two and takes 2 characters at a time.

score -1 · Accepted Answer · answered Aug 17 '21 at 12:16

-1

I think this code will help:

 string text = "1234567";
        int loop = text.Length / 2 + (text.Length % 2 == 0 ? 0 : 1);
        List<string> split = new List<string>();
        int readTotal = 0;
        int textLen = text.Length;
        for (int i = 0; i < loop; i++)
        {
            if (textLen- readTotal >= 2)
                split.Add(text.Substring(i * 2, 2));
            else
                split.Add(text.Substring(i * 2, 1));
            readTotal += 2;

        }

answered Aug 17 '21 at 12:16

Reza Akraminejad

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First you have to pass parameter in Substring second method as how much text you want to read, so I pass 2 or 1 in case if I reach to end of a text with odd number of alphabets. Second I've added a readTotal variable to check how many I read and how much is to reach at the end of the string. – Reza Akraminejad Aug 17 '21 at 12:21
Your welcome. Please set this answer as useful – Reza Akraminejad Aug 17 '21 at 12:29

How do i split a text 2 by 2?

2 Answers2