通讯录

用OC实现一个中等难度的通讯录

创建两个类,一个联系人类,一个电话簿类用来管理联系人

电话本.m文件

@implementation AddressBook

-(instancetype)init{

    self = [super self];

    if (self) {

        _groupDic = [NSMutableDictionary dictionaryWithCapacity:1];

    }

    return self;

}

//获取名字首字母

- (NSString *)getFirstName:(Contact *)contact{

    return[[[contact name] substringToIndex:1] uppercaseString];

}

//根据首字母把联系人加入分组

- (void)addContactByName:(Contact *)contact{

    if ([[contact name] length] == 0 || [contact phoneNum] == 0) {

        NSLog(@"添加失败");

    }else{

        NSMutableArray *arr = [_groupDic objectForKey:[self getFirstName:contact]];

        if (arr == nil) {[

            NSMutableArray *arr = [[NSMutableArray alloc] init];

            [arr addObject:contact];

            [_groupDic setValue:arr forKey:[self getFirstName:contact]];

        }else{

            [arr addObject:contact];

        }

    }

}

    //获取某个分组下得所有联系人,并且按照姓名升序排序(三种方法实现)

//(1),

//    - (void)getContactOfGroupAndSorted:(NSString *)groupName{

//        NSMutableArray *arr1 = [_groupDic objectForKey:groupName];

//       // NSMutableArray *newarr = [_groupDic objectForKey:groupName];

//        for (int i = 0; i < [arr1 count] - 1; i++) {

//            for (int j = 0; j < [arr1 count] - i - 1; j++) {

//                if ([[arr1[j] name] compare:[arr1[j + 1] name]] > 0) {

//                    [arr1 exchangeObjectAtIndex:j withObjectAtIndex: j + 1];

//                }

//            }

//        }

//    }

//(2)

//- (void)getContactOfGroupAndSorted2:(NSString *)groupName{

//    NSMutableArray *arr2 = [_groupDic objectForKey:groupName];

//    NSComparator myBlock = ^(id obj1, id obj2){

//        return [[obj1 name] compare:[obj2 name]];

//    };

//    [arr2 sortUsingComparator:myBlock];

//    NSLog(@"%@", arr2);

//  }

//(3)

- (void)getContactOfGroupAndSorted2:(NSString *)groupName{

    NSMutableArray *arr3 = _groupDic[groupName];

    [arr3 sortUsingComparator:^NSComparisonResult(id obj1, id obj2) {

        return [[obj1 name] compare:[obj2 name]];

    }];

    NSLog(@"%@", arr3);

}

//从通讯录中根据电话号码搜索联系人

- (void)getConctByPhoneNum:(NSUInteger)phoneNum{

    NSArray *arr4 = [_groupDic allValues];

    for (NSMutableArray *arr in arr4) {

        for (Contact *c in arr) {

            if ([c phoneNum] == phoneNum) {

                NSLog(@"%@ %@ %lu %@ %ld", [c name], [c sex], [c phoneNum], [c address], [c age]);

            }

        }

    }

}

//获取所以女性联系人,并且按照年龄的降序排列

- (void)getWContactAndSorted:(NSString *)sex{

    //获取字典中所有的联系人数组

    NSArray *arr5 = [_groupDic allValues];

    //用来接受女性联系人

    NSMutableArray *mArr = [NSMutableArray arrayWithCapacity:1];

    //遍历联系人数组

    for (NSArray *a in arr5) {

        //遍历联系人数组中的联系人

        for (Contact *c in a) {

            if ([[c sex] isEqualToString:@"w"]) {

                NSLog(@"%@ %@ %lu %@ %ld", [c name], [c sex], [c phoneNum], [c address], [c age]);

                 [mArr addObject:c];

            }

        }

    }

    //按年龄降序排列

    [mArr sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {

        if ([obj1 age] < [obj2 age]) {

            return NSOrderedDescending;

        }else{

            return NSOrderedSame;

        }

    }];

}

//根据姓名删除某个联系人

- (void)removeContactByName:(NSString *)name{

    //获取名字首字母并转化成大写

    NSString *str = [[name substringFromIndex:1] uppercaseString];

    for (int i = 0; i < [[_groupDic valueForKey:str] count]; i++) {

        if ([[[[_groupDic valueForKey:str] objectAtIndex:i] name] isEqualToString:name]) {

            [[_groupDic objectForKey:str] removeObjectAtIndex:i];

            //如果对应分组里的联系人为空,将对应的key值也删除

            if ([_groupDic objectForKey:str] == nil) {

                [_groupDic removeObjectForKey:str];

            }

        }

    }

}

//删除某个分组的全部联系人

- (void)removeAllContactOfGroup:(NSString *)groupName{

    [_groupDic removeObjectForKey:groupName];

}

//展示通讯录中的所有联系人

- (void)printAllContactInfo{

    NSArray *cArr = [_groupDic allValues];

    for (NSMutableArray *arr in cArr) {

        for (Contact *contact in arr) {

            NSLog(@"%@", contact);

        }

    }

}

@end

int main(int argc, const char * argv[]) {

    @autoreleasepool {

        Contact *con1 = [[Contact alloc] initWithName:@"Curry" sex:@"m" phoneNum:145 address:@"lanou"  age:18];

        Contact *con2 = [[Contact alloc] initWithName:@"Aobe" sex:@"w" phoneNum:123 address:@"wanf"  age:18];

        Contact *con3 = [[Contact alloc] initWithName:@"Bob" sex:@"m" phoneNum:466 address:@"henan"  age:18];

        AddressBook *AddBook = [[AddressBook alloc] init];

        [AddBook addContactByName:con1];

        [AddBook addContactByName:con2];

        [AddBook addContactByName:con3];

 //      [AddBook getWContactAndSorted:@"w"];

        //[AddBook printAllContactInfo];

        [AddBook getConctByPhoneNum:123];

        [AddBook printAllContactInfo];       

    }

    return 0;

}