数组内元素的排序

//把数组内的元素按着字母的生序排列，compare是系统的方法，不必实现

+(NSString *)handelDictionary:(NSArray *)array
{
NSMutableArray * sortArray = [[NSMutableArray alloc]init];
for (id _obj in [<span style="font-family: Arial, Helvetica, sans-serif;">array </span><span style="font-family: Arial, Helvetica, sans-serif;"> sortedArrayUsingSelector:@selector(compare:)]) {</span>
[sortArray addObject:_obj];
}

}

NSMutableDictionary *dictionary = [[NSMutableDictionary alloc]init];//最终的字典
NSMutableArray *allKeys= [[NSMutableArray alloc]init];//所有的key
//把小字典合并成 大字典
for (int i=0; i<array.count; i++) {

//忽略掉非字典的成分
if([array[i] isKindOfClass:[NSDictionary class]] || [array[i] isKindOfClass:[NSMutableDictionary class]]) {

//取出每个小字典和key
NSMutableDictionary *  dic = array[i];
NSArray *keys = [dic allKeys];

//拼大字典
for (int i = 0; i<keys.count; i++) {
[allKeys addObject:keys[i]];
[dictionary setObject:[dic objectForKey:keys[i]] forKey:keys[i]];
}
}
}