Count all occurrences of a character in a string

[thomaz]

Hi....

There is a string method to count the total number of a
specified character in a string.
EX: count the total of (*) in a string
*** Test ***

Thanks....

[Peter Rilling]

Re: Count all occurrences of a character in a string

You could use a regular expression.

"thomaz" <suppa@nce.ufrj .br> wrote in message
news:18ee01c4db a8$0372f270$a40 1280a@phx.gbl.. .[color=blue]
> Hi....
>
> There is a string method to count the total number of a
> specified character in a string.
> EX: count the total of (*) in a string
> *** Test ***
>
> Thanks....
>[/color]

[Dennis Myrén]

Re: Count all occurrences of a character in a string

I would recommend a manual approach, looping through each character in the
string.

This example could be optimized more.
public static int CountChar ( string input, char c )
{
int retval = 0;
for (int i = 0; i < input.Length; i ++)
if (c == input [i])
retval ++;
return retval;
}


--
Regards,
Dennis JD Myrén
Oslo Kodebureau
"thomaz" <suppa@nce.ufrj .br> wrote in message
news:18ee01c4db a8$0372f270$a40 1280a@phx.gbl.. .[color=blue]
> Hi....
>
> There is a string method to count the total number of a
> specified character in a string.
> EX: count the total of (*) in a string
> *** Test ***
>
> Thanks....
>[/color]

[Paul E Collins]

Re: Count all occurrences of a character in a string

"thomaz" <suppa@nce.ufrj .br> wrote:
[color=blue]
> There is a string method to count the total number
> of a specified character in a string.[/color]

private static int CountChar(char c, string s)
{
int pos = 0, count = 0;

while ((pos = s.IndexOf(c, pos)) != -1)
{
count++;
pos++;
}

return count;
}

P.

[C# Learner]

Re: Count all occurrences of a character in a string

thomaz <suppa@nce.ufrj .br> wrote:
[color=blue]
> There is a string method to count the total number of a
> specified character in a string.
> EX: count the total of (*) in a string
> *** Test ***[/color]

This is a nice way, IMO:

public class StringHelper
{
public static int CountOccurences OfChar(string instance, char c) {
int result = 0;
foreach (char curChar in instance) {
if (c == curChar) {
++result;
}
}
return result;
}
}