字典的排序

NSDictionary *dic=@{@"1-1":@"02",

@"1-2":@"33",

@"1-3":@"44",

@"1-4":@"60"};

NSArray *arr=[dic allValues];

arr=[arr sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) { return [obj1 compare:obj2]; }];

for (id str in arr){

NSLog(@"%@",str);

}