实现中等难度通讯录。需求： 1、定义联系人类AddressContact。实例变量：姓名（拼音，首字母大写）、性别、电话号码、住址、分组名称、年龄。方法：自定义初始化方法（姓名、电话号码）、显示联系人

//  1、定义联系人类AddressContact。实例变量：姓名（拼音，首字母大写）、性别、电话号码、住址、分组名称、年龄。方法：自定义初始化方法（姓名、电话号码）、显示联系人信息
{
    NSString *_name;//姓名
    NSString *_gender;//性别
    NSInteger _phoneNumber;//电话号码
    NSString *_location;//住址
    NSString *_dividName;//分组名称
    NSInteger _age;//年龄
}
//初始化方法
- (id)initWithName:(NSString *)name phoneNumber:(NSInteger)phoneNumber;
//显示联系人信息
- (NSString *)description;
//setter
- (void)setDividName:(NSString *)dividName;
//getter
- (NSString *)name;
- (NSInteger)phoneNumber;
- (NSString *)dividName;

@end
@implementation AddressContact
//初始化方法
- (id)initWithName:(NSString *)name phoneNumber:(NSInteger)phoneNumber
{
    self = [super init];
    if (self) {
        _name = name;
        _phoneNumber = phoneNumber;
    }
    return self;
}
//显示联系人信息
- (NSString *)description
{
    return [NSString stringWithFormat:@"name:%@, gender:%@, phoneNumber:%ld, location:%@,dividName:%@, age:%ld", _name, _gender, _phoneNumber, _location, _dividName, _age];
}
//setter
- (void)setDividName:(NSString *)dividName
{
    _dividName = dividName;
}
//getter
- (NSString *)name
{
    return _name;
}
- (NSInteger)phoneNumber
{
    return _phoneNumber;
}
- (NSString *)dividName
{
    return _dividName;
}
@end
int main(int argc, const char * argv[])
{

    @autoreleasepool {
        NSArray *arr1 = @[@1,@2,@3];
        NSArray *arr2 = @[@1,@2,@3];
        BOOL d = [arr1 isEqualToArray:arr2];
        NSLog(@"%d",d);
        //创建对象
        AddressContact *Cuichengjie = [[AddressContact alloc] initWithName:@"Cuichengjie" phoneNumber:10086];
        AddressContact *Gengzhi = [[AddressContact alloc] initWithName:@"Gengzhi" phoneNumber:100861];
        AddressContact *Wangjie = [[AddressContact alloc] initWithName:@"Wangjie" phoneNumber:100862];
        AddressContact *Hongjie = [[AddressContact alloc] initWithName:@"Hongjie" phoneNumber:100863];
        AddressContact *Xiaoguang = [[AddressContact alloc] initWithName:@"Xiaoguang" phoneNumber:100864];
        AddressContact *Xiaoming = [[AddressContact alloc] initWithName:@"Xiaoming" phoneNumber:100865];
        AddressContact *Chengcheng = [[AddressContact alloc] initWithName:@"Chengcheng" phoneNumber:100866];
        AddressContact *Bug = [[AddressContact alloc] initWithName:@"Bug" phoneNumber:100867];
        AddressContact *Bug1 = [[AddressContact alloc] initWithName:@"Bug1" phoneNumber:100868];
        AddressContact *Baige = [[AddressContact alloc] initWithName:@"Baige" phoneNumber:100869];
        //创建可变数组
        NSMutableArray *arrB = [NSMutableArray arrayWithObjects:Bug, Bug1, Baige, nil];
        NSMutableArray *arrC = [NSMutableArray arrayWithObjects:Cuichengjie, Chengcheng, nil];
        NSMutableArray *arrG = [NSMutableArray arrayWithObjects:Gengzhi, nil];
        NSMutableArray *arrH = [NSMutableArray arrayWithObjects:Hongjie, nil];
        NSMutableArray *arrW = [NSMutableArray arrayWithObjects:Wangjie, nil];
        NSMutableArray *arrX = [NSMutableArray arrayWithObjects:Xiaoguang, Xiaoming, nil];
        NSMutableDictionary *conductMan = [NSMutableDictionary dictionaryWithObjectsAndKeys:arrB, @"B", arrC, @"C", arrG, @"G", arrH, @"H", arrW, @"W", arrX, @"X", nil];
        NSLog(@"%@", Cuichengjie);
        
        //添加联系人对象
        AddressContact *Hengming = [[AddressContact alloc] initWithName:@"Hengming" phoneNumber:10087];//要添加的对象
        NSString *subString = [[Hengming name] substringToIndex:1];//获取姓名的第一个字母
        for (NSString *str in conductMan) {
            if ([subString isEqualToString:nil] || [@"[Gengming phoneNumber]" isEqualToString:nil ]) {
                NSLog(@"添加失败");
            } else if ([str isEqualToString:subString]){
                [[conductMan objectForKey:str] addObject:Hengming];
            }
            for (AddressContact *aa in [conductMan objectForKey:str]) {
                NSLog(@"%@",aa);
            }
        }
        //从通讯录中根据电话号码搜索联系人
        int n = 0;
        printf("请输入一个电话号码：");
        scanf("%d", &n);
        NSNumber *number = [NSNumber numberWithInt:n];
        for (NSString *str in conductMan) {
            for (AddressContact *aa in [conductMan objectForKey:str]) {
                NSNumber *num = [NSNumber numberWithInteger:[aa phoneNumber]];                if ([number compare:num] == 0) {
                    NSLog(@"%@", aa);
                }
            }
        }
        //根据姓名删除某个联系人
        char a[15] = " 0";
        printf("请输入一个姓名：");
        scanf("%s", a);
        NSString *string = [NSString stringWithFormat:@"%s", a];
        for (NSString *str in conductMan) {
            NSArray *arr = [NSArray arrayWithArray:[conductMan objectForKey:str]];
            for (AddressContact *cui in arr) {
                if ([string compare:[cui name]] == 0) {
                    [[conductMan objectForKey:str] removeObject:cui];
                }
            }
        }
        //把删除之后的该数组中的联系人打印出来
        NSString *subString1 = [string substringToIndex:1];//获取姓名的第一个字母（对象）
        for (AddressContact *aa in [conductMan objectForKey:subString1]) {
            NSLog(@"%@",aa);
        }
    

        //删除某个分组的全部联系人
        char b = '0';
        printf("请输入一个字符：");
        getchar();
        scanf("%c",&b);
        NSString *string1 = [NSString stringWithFormat:@"%c", b];
        for (NSString *str in conductMan) {
            if ([string1 compare:str] == 0) {
                [[conductMan objectForKey:str] removeAllObjects];
            }
        }
        
    }
    return 0;