Sort characters in NSString into alphabetical order

Question

I\'m trying to re-arrange words into alphabetical order. For example, tomato would become amoott, or stack would become ackst.

I\'ve found some methods to do this in

Answer 1

// --------- Function To Make an Array from String
NSArray *makeArrayFromString(NSString *my_string) {
    NSMutableArray *array = [[NSMutableArray alloc] init];
    for (int i = 0; i < my_string.length; i ++) {
        [array addObject:[NSString stringWithFormat:@"%c", [my_string characterAtIndex:i]]];
    }
    return array;

}

// --------- Function To Sort Array
NSArray *sortArrayAlphabetically(NSArray *my_array) {
    my_array= [my_array sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)];
    return my_array;
}

// --------- Function Combine Array To Single String
NSString *combineArrayIntoString(NSArray *my_array) {
    NSString * combinedString = [[my_array valueForKey:@"description"] componentsJoinedByString:@""];
    return combinedString;
}




// Now you can call the functions as in below where string_to_arrange is your string
    NSArray *blowUpArray;
    blowUpArray = makeArrayFromString(string_to_arrange);
    blowUpArray = sortArrayAlphabetically(blowUpArray);
    NSString *arrayToString= combineArrayIntoString(blowUpArray);
    NSLog(@"arranged string = %@",arrayToString);