CODEWITHSUNDEEP
c#
user3748973
user3748973

Reputation: 459

C# substring from specific character until first space

I want to replace string that start with specific character until first space space after that (or maybe first specific character) with another string.

For example If we have a string like this:

aaa bbb ccc @ddd eee fff @ggg hh#iii. jj

I want to make it something like this.

aaa bbb ccc @MMM eee fff @MMM hh#MMM. jj

I found a solution but that's not helpful for me.

UPDATE:

I want to replace all word that start with @ or # and ended with or . or something else that I want with a string like MMM.

In a real example I only know some work start with @ or #.

Upvotes: 0

Views: 1308

Answers (2)

vipersassassin
vipersassassin

Reputation: 178

I think this would get a good start to what you are wanting, although may need some polish based on your specific needs.

    string val = "aaa bbb ccc @ddd eee fff @ggg hh#iii. jj";
    string[] values = val.Split(' '); //identify the separate entities you want split
    val = "";//reset string to empty string
    foreach(string a in values)
    {
        if (a.Contains('@') || a.Contains('#'))
            val += a[0] + "MMM"; //change the values to 'M' of the original
        else
            val += a;
    }
    return val; //return the string with values changed to 'M'

Single line example using Linq as provided by Juharr in the comments

return string.Join(" ", val.Split().Select(s => s.StartsWIth('@') || s.StartsWith('#') ? s[0] + "MMM" : s));

Upvotes: 1

Pacific Bird
Pacific Bird

Reputation: 298

    string example = "aaa bbb ccc @ddd eee fff @ggg hh"; //Init the input 
    string[] splitExample = example.Split(' '); //Split the string after every space into an array of substrings
    for (int i = 0; i < splitExample.Length; i++) //Iterate through each substring
    {
        if (splitExample[i] != null) //Check if the currently tested string exists within the array
        {
            if (splitExample[i] == '@') // Test if the first char of the currently tested substring is '@'
            {
                splitExample[i] = "@MMM"
            }
        }
        else
        {
            break; //Exit the loop if the tested string does not exist
        } 
    }
    string exampleOutput;
    foreach(string append in splitExample) //Iterate through the array and add the now modified substrings back together
    {
        exampleOutput = exampleOutput + " " + append;
    }

I'm not sure if this is the best way to do it, this was just off of my head

Upvotes: 0

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