ios - NSMutable String: How do I get the index of multiple spaces in a string? -

i want find index of 8th occurrence of " " split string there. can find line of code gives me array of occurrences of " ". there function can call give me information?

 int numberofoccurences = [[myliststring componentsseparatedbystring:@"  "] count]; 

edit 1: far solution came with:

 if(numberofoccurences > 8) {     //find index of place want split picking     //arbitrary number , finding first white space     int index = (int)[[myliststring substringfromindex:45] rangeofstring:@"  "].location;      nslog(@"index: %i", index);      //make substring     nsstring *substringlist1 = [myliststring substringtoindex:(45+index)];     nsstring *substringlist2 = [myliststring substringfromindex:(45+index)];  } 

there no method find 8th space, there building blocks need.

the nsstring method rangeofstring:options:range: find first occurrence of first argument within range specified third argument, returns range match. start third argument being whole string , iterate reducing range search using previous result.

if looking white space , not space might consider similar rangeofcharactersfromset methods.

if don't want eighth space, trying break string @ given length, can @ componentsseparatedbystring/componentsseparatedbycharactersinset , reassemble resultant “words" strings of appropriate length. might want @ nsscanner.

hth