1 #import <Foundation/Foundation.h> 2  3 //这是一个联系人类,用于存储单个联系人的信息 4 //并且能够提供联系人相关内容 5 //这个类是一个Model类 6  7 @interface Contact : NSObject 8 { 9     NSString *_name;    //姓名10     NSString *_sex;     //性别11     NSString *_phone;   //电话12     NSString *_address; //地址13     NSString *_groupName;   //组名14     NSInteger _age;     //年龄15 }16 //初始化方法,初始化的时候需要给定一个姓名和电话17 - (instancetype)initWithName:(NSString *)name phone:(NSString *)phone;18 19 - (instancetype)initWithName:(NSString *)name phone:(NSString *)phone sex:(NSString *)sex age:(NSInteger)age;20 21 //显示联系人信息22 - (void)displayInfo;23 24 //获取联系人姓名25 - (NSString *)name;26 27 //获取联系人电话28 - (NSString *)phone;29 30 //获取联系人分组信息31 - (NSString *)groupName;32 33 //获取联系人性别34 - (NSString *)sex;35 36 - (NSInteger)age;37 38 //联系人按姓名比较39 - (NSComparisonResult)compareByName:(Contact *)contact;40 41 //联系人按年龄比较42 - (NSComparisonResult)compareByAge:(Contact *)contact;43 44 @end

 1 #import "Contact.h" 2  3 @implementation Contact 4  5 - (instancetype)initWithName:(NSString *)name phone:(NSString *)phone 6 { 7     return [self initWithName:name phone:phone sex:nil age:0]; 8 } 9 //指定初始化方法10 - (instancetype)initWithName:(NSString *)name phone:(NSString *)phone sex:(NSString *)sex age:(NSInteger)age11 {12     self = [super init];13     if (self) {14         _name = name;15         _sex = sex;16         _groupName = [_name substringToIndex:1];17         _age = age;18         _phone = phone;19     }20     return self;21 }22 23 - (void)displayInfo24 {25     NSLog(@"name:%@ sex:%@ phone:%@ address:%@ group:%@ age:%ld",_name,_sex,_phone,_address,_groupName,_age);26 }27 28 29 - (NSString *)name30 {31     return _name;32 }33 34 - (NSString *)sex35 {36     return _sex;37 }38 39 - (NSString *)phone40 {41     return _phone;42 }43 44 45 - (NSString *)groupName46 {47     return _groupName;48 }49 50 - (NSComparisonResult)compareByName:(Contact *)contact51 {52     NSString *myName = [self name];53     NSString *otherName = [contact name];54     NSComparisonResult result = [myName compare:otherName];55     if (result == NSOrderedAscending) {56         return NSOrderedDescending;57     }else if (result == NSOrderedDescending){58         return NSOrderedAscending;59     }else {60         return NSOrderedSame;61     }62 //    return result;63 }64 65 - (NSInteger)age66 {67     return _age;68 }69 70 - (NSComparisonResult)compareByAge:(Contact *)contact71 {72     NSInteger myAge = [self age];73     NSInteger otherAge  = [contact age];74     if (myAge > otherAge) {75         return NSOrderedAscending;76     }else if (myAge < otherAge){77         return NSOrderedDescending;78     }else {79         return NSOrderedSame;80     }81 }82 83 @end

 1 #import <Foundation/Foundation.h> 2 #import "Contact.h" 3  4 //这个类是一个联系人管理类,主要用于添加,删除,获取,搜索联系人等 5  6 @interface ContactsManager : NSObject 7 { 8     //用于存储所有联系人的字典 9     NSMutableDictionary *_contactsDic;10 }11 - (instancetype)init;12 13 //添加联系人14 - (void)addContact:(Contact *)contact;15 16 //根据groupName获取一组联系人17 - (NSArray *)contactsForGroupName:(NSString *)groupName;18 19 //根据电话号码,获取联系人20 - (Contact *)contactForPhone:(NSString *)phone;21 22 //根据性别,获取联系人23 - (NSArray *)contactsForSex:(NSString *)sex;24 25 //删除指定姓名的联系人26 - (void)removeContactForName:(NSString *)name;27 28 //删除指定分组的所有联系人29 - (void)removeContactsForGroup:(NSString *)groupName;30 31 //显示所有人的信息32 - (void)displayAllContacts;33 34 @end

  1 #import "ContactsManager.h"  2   3 @implementation ContactsManager  4   5 -(instancetype)init{  6     self = [super init];  7     if (self) {  8         _contactsDic = [[NSMutableDictionary alloc] initWithCapacity:26];  9     } 10     return self; 11 } 12  13 - (void)addContact:(Contact *)contact 14 { 15     NSString *name = [contact name]; 16     NSString *phone = [contact phone]; 17     if ([name isEqualToString:@""] || name == nil || [phone isEqualToString:@""] || phone == nil) { 18         return; 19     } 20      21     NSString *groupName = [contact groupName]; 22     NSMutableArray *group = [_contactsDic objectForKey:groupName]; 23     if (group == nil) { 24         NSLog(@"分组不存在"); 25         //创建一个数组,把人放数组里,把数组放字典里 26         group = [[NSMutableArray alloc] initWithCapacity:10]; 27         [group addObject:contact]; 28         [_contactsDic setObject:group forKey:groupName]; 29     }else { 30         [group addObject:contact]; 31     } 32 } 33  34 - (NSArray *)contactsForGroupName:(NSString *)groupName 35 { 36     NSMutableArray *group = [_contactsDic objectForKey:groupName]; 37     [group sortUsingSelector:@selector(compareByName:)]; 38     return group; 39 } 40  41 - (NSArray *)contactsForSex:(NSString *)sex 42 { 43     NSMutableArray *results = [[NSMutableArray alloc] initWithCapacity:10]; 44      45     for (NSString *key in _contactsDic) { 46         NSMutableArray *group = [_contactsDic objectForKey:key]; 47         for (Contact *c in group) { 48             NSString *s = [c sex]; 49             if ([s isEqualToString:sex]) { 50                 [results addObject:c]; 51             } 52         } 53     } 54      55     [results sortUsingSelector:@selector(compareByAge:)]; 56      57     return results; 58 } 59  60 - (Contact *)contactForPhone:(NSString *)phone 61 { 62     for (NSString *key in _contactsDic) { 63         NSMutableArray *group = [_contactsDic objectForKey:key]; 64         for (Contact *c in group) { 65             NSString *p = [c phone]; 66             if ([p isEqualToString:phone]) { 67                 return c; 68             } 69         } 70     } 71     return nil; 72 } 73  74 - (void)removeContactForName:(NSString *)name 75 { 76     NSMutableArray *arr = nil; 77     Contact *toDelete = nil; 78     for (NSString *key in _contactsDic) { 79         NSMutableArray *group = [_contactsDic objectForKey:key]; 80         for (Contact *c in group) { 81             NSString *n = [c name]; 82             if ([n isEqualToString:name]) { 83                 arr = group; 84                 toDelete = c; 85             } 86         } 87     } 88     [arr removeObject:toDelete]; 89 } 90 - (void)removeContactsForGroup:(NSString *)groupName 91 { 92     [_contactsDic removeObjectForKey:groupName]; 93 } 94  95 - (void)displayAllContacts 96 { 97     NSArray *allKeys = [_contactsDic allKeys]; 98     NSArray *sortedKeys = [allKeys sortedArrayUsingSelector:@selector(compare:)]; 99     for (NSString *key in sortedKeys) {100         NSMutableArray *group = [_contactsDic objectForKey:key];101         NSLog(@"---%@---",key);102         for (Contact *c in group) {103             [c displayInfo];104         }105     }106     107     108 //    for (NSString *key in _contactsDic) {109 //        NSMutableArray *group = [_contactsDic objectForKey:key];110 //        NSLog(@"---%@---",key);111 //        for (Contact *c in group) {112 //            [c displayInfo];113 //        }114 //    }115 }116 117 @end

 1 #import <Foundation/Foundation.h> 2 #import "ContactsManager.h" 3  4 int main(int argc, const char * argv[]) 5 { 6 //    NSString *allColorString = [NSString stringWithContentsOfFile:@"/Users/apple/Desktop/crayons.txt" encoding:NSUTF8StringEncoding error:nil]; 7 //    NSArray *colors = [allColorString componentsSeparatedByString:@"\n"]; 8 //    NSLog(@"%@",[[colors objectAtIndex:0] componentsSeparatedByString:@" #"]); 9 10     11     //联系人管理器12     ContactsManager *cm = [[ContactsManager alloc] init];13     //联系人114     Contact *mohang = [[Contact alloc] initWithName:@"Mohan" phone:@"13925082699" sex:@"男" age:22];15     //联系人216     Contact *mochou = [[Contact alloc] initWithName:@"Mochou" phone:@"13854389438" sex:@"女" age:20];17     //联系人318     Contact *moyan = [[Contact alloc] initWithName:@"Moyan" phone:@"18100000000" sex:@"男" age:46];19 20     //联系人421     Contact *yangbailao = [[Contact alloc] initWithName:@"Yangbailao" phone:@"13944774747" sex:@"男" age:56];22     //联系人523     Contact *yangxier = [[Contact alloc] initWithName:@"Yangxier" phone:@"13837373737" sex:@"女" age:18];24     //联系人625     Contact *panjinlian = [[Contact alloc] initWithName:@"Panjinlian" phone:@"18188888888" sex:@"女" age:27];26     27     //联系人128     Contact *caocao = [[Contact alloc] initWithName:@"Caocao" phone:@"1811111111" sex:@"男" age:47];29     //联系人230     Contact *caozhi = [[Contact alloc] initWithName:@"Caozhi" phone:@"13274747474" sex:@"男" age:16];31     //联系人332     Contact *caopi = [[Contact alloc] initWithName:@"Caopi" phone:@"18699995555" sex:@"男" age:34];33     34     [cm addContact:mohang];35     [cm addContact:mochou];36     [cm addContact:moyan];37     [cm addContact:panjinlian];38     [cm addContact:yangbailao];39     [cm addContact:yangxier];40     [cm addContact:caocao];41     [cm addContact:caopi];42     [cm addContact:caozhi];43 44 //    [cm displayAllContacts];45     46 //    [cm removeContactForName:@"Mohang"];47 //    [cm removeContactForName:@"Moyan"];48 //49 ////    [[cm contactForPhone:@"18188888888"] displayInfo];50 ////    NSLog(@"---");51 ////    NSArray *mContacts = [cm contactsForSex:@"女"];52 //    NSArray *mContacts = [cm contactsForGroupName:@"M"];53 //54 ////    NSLog(@"%@",mContacts);55 //    for (Contact *c in mContacts) {56 //        [c displayInfo];57 //    }58 ////    [cm removeContactForName:@"Haojianming"];59     60     return 0;61 }