how many times a string is repeated in another string

how many times a string is repeated in another string - Printable Version

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+--- Thread: how many times a string is repeated in another string (/showthread.php?tid=597392)

how many times a string is repeated in another string - VincenzoDrift - 30.12.2015

Hi, i have a problem. I need to know how many times a string is repeated in another string.

Example:

Code:

new string[128], string2[128];
string = "No/nNo/nNo";
string2= "No";

I need to know how many times the string "No"(string2) is repeated in "No/nNo/nNo"(string1).
The result shoud be 3 times. What function can I use?

P.S. Sorry for my bad english

Re: how many times a string is repeated in another string - Jefff - 30.12.2015

while + strfind "No"

Re: how many times a string is repeated in another string - VincenzoDrift - 31.12.2015

Thanks i try to do this, but don't work.

Code:

stock GetQuantityStringInString(haystack[], needle[])
{
	new pos,
		result,
		count;
	for(;;)  //if i use while(true) it give me a warning
	{
	    result = strfind(haystack, needle, false, pos);
	    pos += result;
	    if(result == -1)
	    {
	        break;
	    }
	    else
		{
            count++;
		}
	}
	return count;
}

Any suggestions?

Re: how many times a string is repeated in another string - BroZeus - 31.12.2015

Use this :

PHP Code:



stock GetQuantityStringInString(haystack[], needle[], ignorecase = true)
{
    new temp[30], c = 0;
    for(new i = 0, l = strlen(haystack)-strlen(needle); i <= l; ++i)
    {
        strmid(temp, haystack, i, i+strlen(needle));
        if(!strcmp(needle, temp, ignorecase))c++;
    }
    return c;
}

Re: how many times a string is repeated in another string - VincenzoDrift - 31.12.2015

Thanks it works, but it give me a warning "tag mismatch" on this line.

Code:

if(!strcmp(needle, temp, ignorecase))c++;

How fix?

Re: how many times a string is repeated in another string - BroZeus - 31.12.2015

Ah change the function prototype(function header) to this:

Quote:

stock GetQuantityStringInString(haystack[], needle[], bool:ignorecase = true)

Add that bold part

Re: how many times a string is repeated in another string - Kaliber - 31.12.2015

The fastest way to do this, is:

PHP Code:



stock static countStrings(const string[], const needle[])

{

    new c;

    for(new i=strfind(string,needle,true); i!=-1; i=strfind(string,needle,true,i+1)) c++;

    return c;

}

Speed Results against your function:

Code:

Your time with 100.000x: 3818ms
My time with 100.000x: 1466ms

Greekz