Splitting a string in a few substrings without string.split

Question

First of all, here is my code:

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            string str = "test1,test2,test3";
        }
    }
}

So, I want to split test1 test2 and test3 using substrings and give it out in a console via console.writeline(). I want to use the "," for it. I'm not allowed to use string.split. Could you help me?

Easiest way is Split function and this is pre defined approach — gulshan arora
– gulshan arora, Commented Sep 11, 2018 at 6:04
string is essentially an array of char. So you can very easily iterate through it, and accumulate the chars, until you reach a comma. — Ofir Winegarten
– Ofir Winegarten, Commented Sep 11, 2018 at 6:08

sujith karivelil · Accepted Answer · 2018-09-11 06:11:09Z

2

Here is a simple solution for you by using .IndexOf() and .Substring() methods.

string strInput = "test1,test2,test3,";
while (strInput.Length > 0)
{
    int commaIndex = strInput.IndexOf(',');
    if (commaIndex != -1)
    {
        Console.WriteLine(strInput.Substring(0, commaIndex));
        strInput = strInput.Substring(commaIndex + 1);
    }
    else
    {
        Console.WriteLine(strInput);
        strInput = "";
    }
}

Where,

String.IndexOf Method Reports the zero-based index of the first occurrence of a specified Unicode character or string within this instance. The method returns -1 if the character or string is not found in this instance. And String.Substring Method will help you to Retrieves a substring from the given instance.

edited Sep 11, 2018 at 6:11

answered Sep 11, 2018 at 6:06

sujith karivelil

29.1k7 gold badges60 silver badges90 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

gulshan arora · Accepted Answer · 2018-09-11 06:07:47Z

2

This will work!

 class Program  
    {  
        static void Main(string[] args)  
        {  

            string str = "Test,Data";  
            ArrayList arrayList = new ArrayList();  
            string Temp = "";  
            for (int i = 0; i < str.Length; i++)  
            {  

                if (str[i] != ',')  
                {  
                    Temp = Temp + str[i];  
                    continue;  
                }  


                arrayList.Add(Temp);  
                Temp = "";  
            }  
            Console.WriteLine("Enter the no 1 to " + arrayList.Count);  
            int option =Convert.ToInt32(Console.ReadLine());  
            if (option < arrayList.Count && option > 0)  
            {  
                Console.WriteLine(option+ " position is  = " +arrayList[option - 1]);  
            }  
            else  
            {  
                Console.WriteLine("Enter only 1 to " + arrayList.Count);  
            }  
            Console.ReadLine();  
        }  
    }

edited Sep 11, 2018 at 6:07

answered Sep 11, 2018 at 6:00

gulshan arora

4732 silver badges8 bronze badges

3 Comments

gulshan arora Over a year ago

Why you are not allowed ? can please tell specifically

Vischi Over a year ago

its "like" a homework. I'm a trainee in developement, and my trainer gave me that task. He wants me to figure it out. string.split is not allowed because it would make it too easy. :D

Ganesh Todkar Over a year ago

Great @Vischi : You want your homework questions to be solved on stackoverflow. Cheers man.. ! But you will not learn any thing of coding, if you would not try to solve your homework yourself.

Adrian773 · Accepted Answer · 2018-09-11 06:53:59Z

1

For a non-regex answer:

string str = "test1,test2,test3";
string currentSubStr = string.Empty;
foreach (char c in str)
{
    if (c == ',')
    {
        Console.WriteLine(currentSubStr);
        currentSubStr = string.Empty;
    }
    else
    {
        currentSubStr = currentSubStr + c;
    }
}

This works for a very simply comma separated list, but if you're dealing with a csv file then you would be better off using a proper csv parser.

edited Sep 11, 2018 at 6:53

answered Sep 11, 2018 at 6:03

Adrian773

49311 silver badges23 bronze badges

Collectives™ on Stack Overflow

Splitting a string in a few substrings without string.split

3 Answers 3

Comments

3 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

3 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related