Question

Programmatically I can see how many times a character exists in any given string:

    letterOccurences= [[tempWordStr componentsSeparatedByString:chosenCharacter] count];

So for the word Mississippi, if the chosen character was ‘i’ this function would return 4.

But what I would like to know is where the character appears in the string. In the Mississippi case, this would be at 1,4,7,10.

Answer 1

You can use the NSString methodrangeOfString:options:range: – this finds and returns the range of a given string (ie, @"i") within a given range. You simply need to adjust the given range of the receiver until you find no more instances of the substring.