ios object-c 倒叙遍历大数组,将其中所有的相同的子元素合并到一起

NSMutableArray *groupSameElementsInReverseconcon(NSMutableArray *bigArray) {
   NSMutableArray *resultGroups = [NSMutableArray array];
   if (bigArray.count == 0) {
       return resultGroups;
   }

 // 从最后一个元素开始倒序遍历
   for (NSInteger i = (NSInteger)bigArray.count - 1; i >= 0; i--) {
       DBB_ContactModel *currentElement = bigArray[i];
       BOOL elementAddedToGroup = NO;
       for (NSMutableArray *group in resultGroups) {
        
        DBB_ContactModel *objModel = group[0];
        
        if (![objModel.name isEqualToString:@" "] && ![currentElement.name isEqualToString:@" "] && [objModel.name isEqualToString:currentElement.name]) {
            [group addObject:currentElement];
            elementAddedToGroup = YES;
            break;
        }else{
            NSInteger i_Count = currentElement.numberArray.count;
            NSInteger J_Count = objModel.numberArray.count;
           if (i_Count>0 && J_Count>0) {
               if (i_Count>=J_Count) {
                   for (NSString *phoneNum in objModel.numberArray) {
                       if ([currentElement.numberArray containsObject:phoneNum]) {
                           [group addObject:currentElement];
                           elementAddedToGroup = YES;
                           break;
                       }
                   }
               }else{
                   for (NSString *phoneNum in currentElement.numberArray) {
                       if ([objModel.numberArray containsObject:phoneNum]) {
                           [group addObject:currentElement];
                           elementAddedToGroup = YES;
                           break;
                       }
                   }
               }
           }
            
         }
        
     }
     if (!elementAddedToGroup) {
          NSMutableArray *newGroup = [NSMutableArray arrayWithObject:currentElement];
          [resultGroups addObject:newGroup];
     }
   }
    return resultGroups;
}

  //调用：
  NSMutableArray *erweiShuzu = groupSameElementsInReverseconcon(array);

  // 找出数组中 所有相同的电话号码 

  for (int i=0; i<erweiShuzu.count; i++){
    NSMutableArray *subArray = erweiShuzu[i];
    
    if (subArray.count>1) {
        
        /*
           1.遍历subArray
           2.把合并结果插入subArray第一位
         */
        NSMutableArray *hebingArray = [NSMutableArray array];
        DBB_ContactModel *setModel = [[DBB_ContactModel alloc] init];
        setModel.isSelected = NO;
        for (int s =0;s<subArray.count;s++) {
            DBB_ContactModel *model = subArray[s];
            if (model.numberArray.count>0) {
                for (NSString *dbb_number in model.numberArray) {
                    // 合并后 的代码
                    if (![hebingArray containsObject:dbb_number]) {
                        [hebingArray addObject:dbb_number];
                    }
                }
            }
            if (s==0) {
                if (![model.name isEqualToString:@" "] && model.name.length>0) {
                    setModel.name = model.name;
                }
            }
        }
        if (!setModel.name) {
            DBB_ContactModel *lastModel = subArray.lastObject;
            setModel.name = lastModel.name;
        }
        setModel.numberArray = hebingArray;
        CNMutableContact *obj = [[CNMutableContact alloc] init];
        obj.familyName = setModel.name;
        NSMutableArray *phoneNums = [NSMutableArray array];
        for (NSString *phoneStr in hebingArray) {
            CNPhoneNumber *number = [CNPhoneNumber phoneNumberWithStringValue:phoneStr];
            CNLabeledValue *phone = [[CNLabeledValue alloc]initWithLabel:CNLabelPhoneNumberiPhone value:number];
            [phoneNums addObject:phone];
            
        }
        obj.phoneNumbers = [NSArray arrayWithArray:phoneNums];
        setModel.contact = (CNContact*)obj;
        [subArray insertObject:setModel atIndex:0];
        [self.repeatContactArray addObject:subArray];
    }
    
}

DBB_ContactModel.h 文件

 #import <Foundation/Foundation.h>
 #import <Contacts/Contacts.h>

 NS_ASSUME_NONNULL_BEGIN

 @interface DBB_ContactModel : NSObject

 @property (nonatomic,assign) BOOL isSelected;

 @property (nonatomic,strong) NSString *name;

 @property (nonatomic,strong) NSMutableArray *numberArray;

 @property (nonatomic,strong) CNContact *contact;

@end