string into mutable array objective c

Question

I am trying to create a NSMutableArray out of a NSString. It shouldn't be separated by anything. So if the string is @"0123" the array should be {@"0", @"1", @"2", @"3", nil}. But if I use the code bellow it creates an array like {@"0123", nil}. In the code bellow I also convert a regular array to a mutable array, because I don't know how to do it directly..

NSMutableArray *myMutableArray = [[NSMutableArray alloc] initWithArray:[myString componentsSeparatedByString:@""]];

@H2CO3: I remember few days back, we both solved similar question.. — Anoop Vaidya, Apr 10 '13 at 19:42
@AnoopVaidya If you look closely, the dupe is a question from early 2012. (Well, the question what I think you're talking about is a bit different, there the emphasis was on characters, here it's the array that matters... whatever.) — , Apr 10 '13 at 19:43

score 2 · Answer 1 · answered Apr 10 '13 at 19:41

2

NSMutableArray *array = [NSMutableArray new];
for (NSInteger i=0; i<string.length; i++) {
    [array addObject:[NSString stringWithFormat:@"%C", [string characterAtIndex:i]]];
}

answered Apr 10 '13 at 19:41

Anoop Vaidya

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Sometimes you actually have to write code. – Hot Licks Apr 10 '13 at 19:46
@HotLicks: I dint get you.... – Anoop Vaidya Apr 10 '13 at 19:50
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This code fails if the string has any Unicode characters of \U10000 or greater. This includes Emoji characters and many others. – rmaddy Apr 10 '13 at 19:53
As per OP's example... string=@"01234" . – Anoop Vaidya Apr 10 '13 at 19:56
I was pointing out a potential pitfall in the answer. This way people can make an informed decision about whether the answer fits their needs or not. – rmaddy Apr 10 '13 at 20:05
@rmaddy: should i use `substringWithRange:NSMakeRange(i,1)` ? – Anoop Vaidya Apr 10 '13 at 20:06
1

@AnoopVaidya No, that has the same problem. See the answers in the 2nd duplicate question. – rmaddy Apr 10 '13 at 20:07

string into mutable array objective c

1 Answers1