// 初始化UILocalizedIndexedCollation
UILocalizedIndexedCollation *collation = [UILocalizedIndexedCollation currentCollation];
//得出collation索引的數(shù)量，這里是27個（26個字母和1個#）
NSInteger sectionTitlesCount = [[collation sectionTitles] count];
//初始化一個數(shù)組newSectionsArray用來存放最終的數(shù)據(jù)，我們最終要得到的數(shù)據(jù)模型應該形如@[@[以A開頭的數(shù)據(jù)數(shù)組], @[以B開頭的數(shù)據(jù)數(shù)組], @[以C開頭的數(shù)據(jù)數(shù)組], ... @[以#(其它)開頭的數(shù)據(jù)數(shù)組]]
NSMutableArray *newSectionsArray = [[NSMutableArray alloc] initWithCapacity:sectionTitlesCount];
//初始化27個空數(shù)組加入newSectionsArray
for (NSInteger index = 0; index < sectionTitlesCount; index++) {
 NSMutableArray *array = [[NSMutableArray alloc] init];
 [newSectionsArray addObject:array];
}
NSLog(@"newSectionsArray %@ %@",newSectionsArray,collation.sectionTitles);
NSMutableArray *firstChar = [NSMutableArray arrayWithCapacity:10];
//將每個名字分到某個section下
for (id Model in willSortArr) {
 //獲取name屬性的值所在的位置，比如"林丹"，首字母是L，在A~Z中排第11（第一位是0），sectionNumber就為11
 NSInteger sectionNumber = [collation sectionForObject:Model collationStringSelector:NSSelectorFromString(sortkey)];
 //把name為“林丹”的p加入newSectionsArray中的第11個數(shù)組中去
 NSMutableArray *sectionNames = newSectionsArray[sectionNumber];
 [sectionNames addObject:Model];
 NSString * str= collation.sectionTitles[sectionNumber];
 [firstChar addObject:str];
 NSLog(@"sectionNumbersectionNumber %ld %@",sectionNumber,str);
}
NSArray *firstCharResult = [self SortFirstChar:firstChar];

NSLog(@"firstCharResult== %@",firstCharResult);
//對每個section中的數(shù)組按照name屬性排序
for (NSInteger index = 0; index < sectionTitlesCount; index++) {
 NSMutableArray *personArrayForSection = newSectionsArray[index];
 NSArray *sortedPersonArrayForSection = [collation sortedArrayFromArray:personArrayForSection collationStringSelector:@selector(name)];
 newSectionsArray[index] = sortedPersonArrayForSection;
}
//刪除空的數(shù)組
NSMutableArray *finalArr = [NSMutableArray new];
for (NSInteger index = 0; index < sectionTitlesCount; index++) {
 if (((NSMutableArray *)(newSectionsArray[index])).count != 0) {
  [finalArr addObject:newSectionsArray[index]];
 }
}
return @{CYPinyinGroupResultArray:finalArr,
   CYPinyinGroupCharArray:firstCharResult};

//數(shù)組去重復
NSMutableArray *noRepeat = [[NSMutableArray alloc]initWithCapacity:8];
NSMutableSet *set = [[NSMutableSet alloc]initWithArray:firstChararry];
[set enumerateObjectsUsingBlock:^(id obj , BOOL *stop){

 [noRepeat addObject:obj];
}];
//字母排序
NSArray *resultkArrSort1 = [noRepeat sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
 return [obj1 compare:obj2 options:NSNumericSearch];
}];
//把”#“放在最后一位
NSMutableArray *resultkArrSort2 = [[NSMutableArray alloc]initWithArray:resultkArrSort1];
if ([resultkArrSort2 containsObject:@"#"]) {
 [resultkArrSort2 removeObject:@"#"];
 [resultkArrSort2 addObject:@"#"];
}

return resultkArrSort2;

NSMutableArray *marr = [NSMutableArray arrayWithCapacity:10];
for (NSDictionary *dict in arr) {
 PersonModel *model =[[PersonModel alloc]init];// dict[@"name"];
 model.name =dict[@"name"];
 [marr addObject:model];

}

NSArray *resultarr1 = dcit[CYPinyinGroupResultArray];//排好順序的PersonModel數(shù)組
NSArray *resultarr2 = dcit[CYPinyinGroupCharArray];//排好順序的首字母數(shù)組