Upvote:4

Aprove answer 
NSMutableArray *results = [NSMutableArray array];

for (int i = 0; i < [string length]; i++)
{
    NSString *substr = [string substringWithRange:NSMakeRange(i,1)];
    [results addObject:[NSNumber numberWithInt:[substr intValue]];
} 

NSLog(@" %@ separated into: %@", string, results);

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