ObjectC----实现简单的通讯录(增删改查)
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题目描述：
1.创建AddressBook类. 1)使⽤用字典作为容器,字典的Key值为分组名(姓名⾸首字⺟母,⼤大写),value值为数组,数组
中存放联系⼈人(Person实例).(5分) 2)添加联系⼈人.要求(20分)不能有重名).
a.判断姓名和电话不能为空否则添加失败. b.判断是否已经存在分组,存在直接存储.不存在创建分组后再存储.(注:联系⼈人
c.添加成功返回YES,姓名为空或者有重名的添加失败返回NO. d.数据使⽤用Person存储.
e.⽅方法:- (BOOL)addPerson:(Person *)aPerson;
3)按照姓名删除联系⼈人.(15分)
a.⽅方法:- (BOOL)deletePersonWithName:(NSString*)aPersonName; b.删除成功返回YES,否则返回NO; c.当删除联系⼈人后分组为空时,需要删除该分组。
4)删除⼀一个分组.(10分)
a:⽅方法:- (BOOL)deleteGroup:(NSString *)aGroupName; b.删除成功返回YES,否则返回NO;
5)根据电话查找某个联系⼈人.(10分)
a:⽅方法:-(Person *)findPersonWithPhoneNum:(NSString *)aPhoneNum; b:如果找到返回该联系⼈人,否则返回nil. c.忽略电话重复问题,只返回第⼀一个查找到的联系⼈人。
6)根据性别查找联系⼈人,并将查到的联系⼈人按照年龄升序排序(15分) a:⽅方法:-(NSArray *)findPersonsWithSex:(NSString *)aSex; b:查找到联系⼈人放⼊入数组,排序的时候使⽤用block.
7)根据姓名,更改联系⼈人信息.(10分) a:⽅方法:-(BOOL)changePersonWithName:(NSString *)name phoneNum:
(NSString *)aNum sex:(NSString *)aSex age:(NSUInteger) aAge; b:找到该联系⼈人并修改该成功返回YES,否则返回NO
c.修改电话、性别、年龄,参数不能为空。
8)展⽰示通讯录中的所有联系⼈人信息(5分) a:⽅方法:-(void)showAll;
b.通过重写description⽅方法展⽰示联系⼈人信息 。
2.使⽤用Person类.(属性:姓名,年龄,性别,电话,分组) 1)分组是姓名⾸首字⺟母(⼤大写),使⽤用提供的NSString类⺫⽬目中的⽅方法获取。 2)重写description⽅方法,输出“姓名:张三 性别:男 年龄:22 电话:
123456789”.(5分) 3)定义Person类的便利构造器⽅方法,⽅方法包含参数:姓名、年龄、性别、电话.(5分)
3.main函数中的实现 1).创建⼀一个AddressBook类的实例(通讯录).
2).使⽤用便利构造器创建四个Person类的实例(联系⼈人). 姓名:Lucy 性别:⼥女 电话:123 年龄:21
姓名:Joe 性别:男 电话:456 年龄:17
姓名:Baby 性别:⼥女 电话:789 年龄:27
姓名:Linda 性别:⼥女 电话:000 年龄:21 3).调⽤用添加联系⼈人⽅方法,将四个联系⼈人添加到通讯录中. 4).根据电话查找联系⼈人,并打印(查找电话:456); 5).根据性别查找联系⼈人,并将查到的联系⼈人按照年龄升序排序,并打印(查找性别:⼥女) 6).根据姓名,更改联系⼈人信息.(修改Linda的信息: 性别:⼥女 电话:012 年龄:25); 7).按照姓名删除联系⼈人,并展⽰示通信录中所有⼈人信息.(删除联系⼈人:Baby) 8).删除⼀一个分组,并展⽰示通信录中所有⼈人信息.(删除L组)
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AddressBook.h:
- (BOOL)addPerson:(Person *)aPerson;
- (BOOL)isGroupExist:(NSString *)groupName;
- (Person *)selectPersonWithName:(NSString *)name;
- (BOOL)deletePersonWithName:(NSString *)aPersonName;
- (BOOL)deleteGroup:(NSString *)aGroupName;
- (Person *)findPersonWithPhoneNum:(NSString *)aPhoneNum;
- (NSArray *)findPersonsWithSex:(NSString *)aSex;
- (BOOL)changePersonWithName:(NSString *)name phone:(NSString *)aNum sex:(NSString *)aSex age:(NSUInteger)aAge;
- (void)showAll;// 根据姓名查找对应的人
- (Person *)selectPersonWithName:(NSString *)name
{
NSString * grup = [name uppercasePinYinFirstLetter];
BOOL isGupExist = [self isGroupExist:grup];
if (!isGupExist) {
return nil;
}
else{
NSMutableArray * arr = [_dic objectForKey:grup];
for (Person * per in arr) {
if ([per.name isEqualToString:name]) {
return per;
}
}
}
return nil;
}
// 判断是否存在guoupName组
- (BOOL)isGroupExist:(NSString *)groupName
{
for (NSString * key in _dic) {
if ([key isEqualToString:groupName]) {
return YES;
}
}
return NO;
}
// 添加联系人
- (BOOL)addPerson:(Person *)aPerson
{
Person * per = [self selectPersonWithName:aPerson.name];
if (per) {
NSLog(@"The Person is Exist!");
return NO;
}
BOOL isGroupExt = [self isGroupExist:aPerson.group];
if (!isGroupExt) {
NSMutableArray *arr = [NSMutableArray array];
[_dic setObject:arr forKey:aPerson.group];
[arr addObject:aPerson];
}
else{
NSMutableArray * arr = [_dic objectForKey:aPerson.group];
[arr addObject:aPerson];
}
return YES;
}
// 按照姓名删除联系人
- (BOOL)deletePersonWithName:(NSString *)aPersonName
{
Person * per = [self selectPersonWithName:aPersonName];
if (per == nil) {
NSLog(@"The Person Is Not Exist!");
return NO;
}
NSMutableArray *arr = [_dic objectForKey:per.group];
[arr removeObject:per];
if (arr == nil) { // [arr count]==0
[_dic removeObjectForKey:per.group];
}
return YES;
}
// 删除一个分组
- (BOOL)deleteGroup:(NSString *)aGroupName
{
BOOL isGroubExt = [self isGroupExist:aGroupName];
if (!isGroubExt) {
NSLog(@"The Group Is Not Exist!");
return NO;
}
[_dic removeObjectForKey:aGroupName];
return YES;
}
// 根据电话查找某个联系人
- (Person *)findPersonWithPhoneNum:(NSString *)aPhoneNum
{
for (NSString * key in _dic) {
NSMutableArray * arr = [_dic objectForKey:key];
for (Person * per in arr) {
if ([per.phone isEqualToString:aPhoneNum]) {
return per;
}
}
}
return nil;
}
// 根据性别查找联系人，并将查到的联系人按照年龄的升序排序
- (NSArray *)findPersonsWithSex:(NSString *)aSex
{
NSMutableArray * result = [NSMutableArray array];
for (NSString *key in _dic) {
NSMutableArray *arr = [_dic objectForKey:key];
for (Person *per in arr) {
if ([per.sex isEqualToString:aSex]) {
[result addObject:per];
}
}
}
NSArray * arr1 = [result sortedArrayUsingComparator:^NSComparisonResult(Person *obj1, Person *obj2) {
if (obj1.age > obj2.age) {
return NSOrderedDescending;
}
else if(obj1.age == obj2.age)
{
return NSOrderedSame;
}
else
return NSOrderedAscending;
}];
return arr1;
}
// 根据姓名，更改练习人信息
- (BOOL)changePersonWithName:(NSString *)name phone:(NSString *)aNum sex:(NSString *)aSex age:(NSUInteger)aAge
{
Person *per = [self selectPersonWithName:name];
if (!per) {
NSLog(@"NO Person!");
return NO;
}
per.name = name;
per.phone = aNum;
per.sex = aSex;
per.age = aAge;
return YES;
}
// 展示通讯录中的所有联系人信息
- (void)showAll
{
for (NSString *key in _dic) {
NSMutableArray * arr = [_dic objectForKey:key];
for (Person *per in arr) {
NSLog(@"%@",per);
}
}
}
- (void)dealloc
{
[_dic release];
[super dealloc];
}
// 单独给NSMutableDictiona类型的dic分配空间// 也可在主函数中单独给dic分配NSMutableDictionary空间，这里就没用重定义了
- (instancetype)init
{
self = [super init];
if (self) {
_dic = [[NSMutableDictionary alloc]init];
}
return self;
}
我定义的分类是NSString+firstCapitalLetter，把这个类目当做模板来用，别的工程把该类目考入能直接用。
NSString+firstCapitalLetter.h中实现
#import
#define ALPHA @"ABCDEFGHIJKLMNOPQRSTUVWXYZ#"
char pinyinFirstLetter(unsigned short hanzi);
@interface NSString (firstCapitalLetter)
// 提供首字母大写
- (NSString *) uppercasePinYinFirstLetter;
- (NSString *) lowercasePinYinFirstLetter;
@end
#import "NSString+firstCapitalLetter.h"
#define HANZI_START 19968
#define HANZI_COUNT 20902
static char firstLetterArray[HANZI_COUNT] =
"ydkqsxnwzssxjbymgcczqpssqbycdscdqldylybssjgyqzjjfgcclzznwdwzjljpfyynnjjtmynzwzhflzppqhgccyynmjqyxxgd"；
char pinyinFirstLetter(unsigned short hanzi)
{
int index = hanzi - HANZI_START;
if (index >= 0 && index <= HANZI_COUNT)
{
return firstLetterArray[index];
}
else
{
return hanzi;
}
}
@implementation NSString(firstCapitalLetter)
- (NSString *) uppercasePinYinFirstLetter
{
unichar firstLetter = [self characterAtIndex:0];
char cFirstLetter = pinyinFirstLetter(firstLetter);
return [[NSString stringWithFormat:@"%c",cFirstLetter] uppercaseString];
}
- (NSString *) lowercasePinYinFirstLetter
{
unichar firstLetter = [self characterAtIndex:0];
char cFirstLetter = pinyinFirstLetter(firstLetter);
return [[NSString stringWithFormat:@"%c",cFirstLetter] lowercaseString];
}
@end模板用就行
==============================================Person.h
@property(nonatomic,copy)NSString * name;
@property(nonatomic,assign)NSInteger age;
@property(nonatomic,copy) NSString * sex;
@property(nonatomic,copy)NSString * phone;
@property(nonatomic,copy)NSString * group;
// person的便利构造器
+ (instancetype)personWithName:(NSString *)name
age:(NSInteger)age
sex:(NSString *)sex
phone:(NSString *)phone;
- (instancetype)initWithName:(NSString *)name age:(NSInteger)age sex:(NSString *)sex phone:(NSString *)phone;
- (void)setName:(NSString *)name
{
if (_name != name) {
[_name release];
_name = [name copy];
}
self.group = [name uppercasePinYinFirstLetter];
}
- (NSString *)description
{
return [NSString stringWithFormat:@"name=%@,age=%ld,sex=%@,phone=%@",_name,_age,_sex,_phone];
}
//
+ (instancetype)personWithName:(NSString *)name
age:(NSInteger)age
sex:(NSString *)sex
phone:(NSString *)phone
{
Person * per = [[Person alloc]initWithName:name age:age sex:sex phone:phone];
return [per autorelease];
}
//
- (instancetype)initWithName:(NSString *)name age:(NSInteger)age sex:(NSString *)sex phone:(NSString *)phone
{
if (self = [super init]) {
self.name = name;
self.age = age;
self.sex = sex;
self.phone = phone;
//=================
self.group = [name uppercasePinYinFirstLetter];
}
return self;
}
// 此句只能给AddressBook中的dic分配了一个指针的空间大小
AddressBook * addressBook = [[AddressBook alloc]init];
// 单独给NSMutableDictionary类型的dic分配空间
// 如果不使用AddressBook.m的init方法则用这一句就可以替代它
addressBook.dic = [[NSMutableDictionary alloc] init];
Person * per1 = [Person personWithName:@"Lucy" age:21 sex:@"女" phone:@"123"];
Person * per2 = [Person personWithName:@"Joe" age:17 sex:@"男" phone:@"456"];
Person * per3 = [Person personWithName:@"Baby" age:27 sex:@"女" phone:@"789"];
Person * per4 = [Person personWithName:@"Linda" age:21 sex:@"女" phone:@"000"];
//========================
[addressBook addPerson:per1];
[addressBook addPerson:per2];
[addressBook addPerson:per3];
[addressBook addPerson:per4];
[addressBook showAll];
//========================
Person * p = [addressBook findPersonWithPhoneNum:@"456"];
if (!p) {
NSLog(@"NULL!");
}
else{
NSLog(@"%@",p);
}
//========================
NSArray * arr = [addressBook findPersonsWithSex:@"女"];
NSLog(@"%@",arr);
//========================
[addressBook changePersonWithName:@"Linda" phone:@"012" sex:@"女" age:25];
NSLog(@"%@",[addressBook selectPersonWithName:@"Linda"]);
//========================
[addressBook deletePersonWithName:@"Baby"];
[addressBook showAll];
// //========================
[addressBook deleteGroup:@"L"];
[addressBook showAll];[addressBook showAll];
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