ios - Sorting array in objective-c -


this question has answer here:

i trying sort dictionary's keys. trying using code shown above doing wrong.

 self.tableinfodictionary = [responseobject objectforkey:@"division 4 herrar"];   self.rankssorted = [self.tableinfodictionary allkeys];   nslog(@"%@", self.rankssorted);   self.rankssorted = [[self.tableinfodictionary allkeys] sortedarrayusingselector:@selector(localizedcaseinsensitivecompare:)];   nslog(@"-------------------------%@", self.rankssorted);

the output looks this: why 10 not supposed be? 

2015-04-24 19:06:24.884 gbglivescore[14574:418925] (     10,     2,     3,     11,     4,     5,     6,     7,     0,     8,     1,     9 ) 2015-04-24 19:06:24.885 gbglivescore[14574:418925] -------------------------(     0,     1,     10,     11,     2,     3,     4,     5,     6,     7,     8,     9 )

they're strings, , they're in lexicographical order. string "10" comes before "2" because compares first characters, "1" , "2", , "1" comes before "2".

if want them sorted numbers, you'll first have convert them numbers, or you'll have write custom sort method , use instead.


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