Finding the character location of the 30th occurance of a substring in a string

[Maxington]

The problem I am left with is that I need to split a string into substrings and determine the character location of the 30th occurance of "\n" string.

I have a string that has "\n" within it and I am looking for a way to know how many characters the string has from 0 to the 30th occurance of "\n" within the main string

I have considered a string.split or indexOf but can't wrap my head around how to determine the character location of the 30th occurance part.

Any ideas?

[Plater]

If you're not sure how to use the split(), conisder:
IndexOf() has an overload that takes an index of where to start looking.

So if you have the string:
string s="fred ran fast and fast is good"

and wanted the location of the 4th space " ", you could so something like this:

int spot=0;
spot=s.IndexOf(" ",spot);
if (spot!=-1)
{//found one, and now spot =4
}

So you could loop that with say:

int spot=-1;
string s="fred ran fast and fast is good";
for(int i=0;i<30;i++)
{
   spot=s.IndexOf(" ",spot+1);//make sure you start on the next character
   if(spot==-1)
   {//could not find another " ", so exit and leave spot at -1
      break;//if you don't exit, it will start over again and possibly give you the wrong value
   }
}
//when the loop exists, spot will either be a -1 meaning there were not enough occurances, or the index where the 30th character is

Another possibility is to examine the characters in the string:

string s="fred ran fast and fast is good";
int count=0;
int spot=-1;
for(int i=0;i <s.Length;i++)
{
   if(s[i]==' ')
   {
      count++;
   }
   if(count==30)
   {
      spot=i;
      break;//leave the for loop
   }
}
//now spot will either be -1 or the index of the 30th " "
//you can adjust to be the \n character you wanted

As for Split:

string s="fred ran fast and fast is good";
int spot=0;
string[] pieces=s.Split(' ');
if (pieces.Length>30)
{//check to make sure there are enough pieces
   for(int i=0;i<pieces.Length;i++)
   {
      //you should add a 1 because the Split() will remove the split character
      spot+=pieces[i].Length+1;
   }
}
else
{
   spot=-1;//not enough
}
//now spot will either be -1 or index of the 30th  " "

[Maxington]

Yes, this worked.

Thank you.