//
// main.m
// OC6_练习
//
// Created by YIem. on 12/1/15.
// Copyright (c) 2015 www.yiem.net YIem博客. All rights reserved.
//

import <Foundation/Foundation.h>

import "Book.h"

import "Libaray.h"

import "Contact.h"

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

if 0

/* 实现图书管理系统:
 1、使⽤数组管理所有书籍。
 2、数组可以添加、删除。
 3、可以从数组根据书名查找书籍,并修改书籍的价格。
 4、展⽰所有书籍清单(书名)。*/

// 创建对象
Book *b1 = [Book bookWithBookName:@"Objective-C" price:10];
Book *b2 = [Book bookWithBookName:@"C Programming Language" price:20];
Book *b3 = [Book bookWithBookName:@"C Primer Plus" price:15];
// 创建可变数组

// NSMutableArray *bookArr = [@[b1, b2, b3] mutableCopy];

NSMutableArray *bookArr = [NSMutableArray array];
// 添加书本
[bookArr addObject:b1];
[bookArr addObject:b2];
[bookArr addObject:b3];
// 删除

// [bookArr removeLastObject];

// 查找书名 -> 修改价格
// 1.遍历数组
for (Book *b in bookArr) {
    // 2.判断书名
    if ([b.bookName isEqualToString:@"Objective-C"]) {
        // 3.改变价格
        b.price = 100;
    }
}
NSLog(@"%@", bookArr);
// 清单
for (Book *b in bookArr) {
    NSLog(@"%@", b.bookName);
}

endif

if 0

// 创建对象
Book *b1 = [Book bookWithBookName:@"Objective-C" price:10];
Book *b2 = [Book bookWithBookName:@"C Programming Language" price:20];
Book *b3 = [Book bookWithBookName:@"C Primer Plus" price:15];
// 创建Libaray对象
Libaray *lib = [[Libaray alloc] init];
// 添加
[lib addBook:b1];
[lib addBook:b2];
[lib addBook:b3];
// 删除

// [lib removeBookAtIndex:0];

// 修改
[lib changePriceByName:@"Objective-C" price:100];
NSLog(@"%@", lib.bookArr);
// 清单
[lib printBookList];

endif

if 1

/*作业2:
完成以下需求
需求:1、定义 联系人类Contact。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(重写description方法, 打印所有成员变量)。
2、在main.m中定义字典,分组管理所有联系人。分组名 为26个大写的英文字母。
3、可以添加联系人对象,如果姓名或电话号码为空,添加失败(NSLog错误信息)。添加联系⼈到匹配的分组。
4、删除某个分组的全部联系⼈。
 */

// 2.创建 联系人字典(字典套数组)
NSMutableDictionary *contactDic = [NSMutableDictionary dictionary];
// 循环'A'->'Z'
for (char i = 'A'; i <= 'Z'; i++) {
    // key
    NSString *key = [NSString stringWithFormat:@"%c", i];
    // value
    NSMutableArray *arr = [NSMutableArray array];
    // 添加到字典
    [contactDic setObject:arr forKey:key];

// [contactDic setObject:[NSMutableArray array] forKey:[NSString stringWithFormat:@"%c", i]];

}
NSLog(@"%@", contactDic);
// 3.添加
Contact *c1 = [Contact contactWithName:@"Dawa" phone:@"123"];
Contact *c2 = [Contact contactWithName:@"Tuige" phone:@"223"];
Contact *c3 = [Contact contactWithName:@"Beta" phone:@"333"];
Contact *c4 = [Contact contactWithName:@"Suibian" phone:@""];
// 构建数组
NSArray *cArr = @[c1, c2, c3, c4];
// 遍历
for (Contact *c in cArr) {
    // 判断
    if (c.name.length == 0 || c.phone.length == 0) {
        NSLog(@"添加失败");
    } else {
        // 成功
        // 获取key
        NSString *key = [c.name substringToIndex:1];
        // 获取数组
        NSMutableArray *arr = [contactDic objectForKey:key];
        // 添加
        [arr addObject:c];

// [[contactDic objectForKey:[c.name substringToIndex:1]] addObject:c];

    }
}
// 删除
[contactDic removeObjectForKey:@"A"];
NSLog(@"%@", contactDic);

endif



return 0;

}

//
// Book.h
// OC6_练习
//
// Created by YIem. on 12/1/15.
// Copyright (c) 2015 www.yiem.net YIem的博客. All rights reserved.
//

import <Foundation/Foundation.h>

@interface Book : NSObject
@property (nonatomic, copy) NSString bookName;/< 书名 /
@property (nonatomic, assign) CGFloat price; /*< 价格 /
// 初始化

(instancetype)initWithBookName:(NSString *)bookName price:(CGFloat)price;
// 便利构造器
(instancetype)bookWithBookName:(NSString *)bookName price:(CGFloat)price;
@end

//
// Book.m
// OC6_练习
//
// Created by YIem. on 12/1/15.
// Copyright (c) 2015 www.yiem.net YIem博客. All rights reserved.
//

import "Book.h"

@implementation Book

pragma mark - 初始化

(instancetype)initWithBookName:(NSString *)bookName price:(CGFloat)price
{
self = [super init];
if (self) {
```
self.bookName = bookName;
self.price = price;
```
}
return self;
}

pragma mark - 便利构造器

(instancetype)bookWithBookName:(NSString *)bookName price:(CGFloat)price
{
Book *b = [[Book alloc] initWithBookName:bookName price:price];
return b;
}

pragma mark - 描述方法

(NSString *)description
{
return [NSString stringWithFormat:@"name: %@, price: %.2f", self.bookName, self.price];
}

@end

//
// Libaray.h
// OC6_练习
//
// Created by YIem. on 12/1/15.
// Copyright (c) 2015 www.yiem.net YIem的博客. All rights reserved.
//

import <Foundation/Foundation.h>

// 引用类型
@class Book;

@interface Libaray : NSObject

@property (nonatomic, retain) NSMutableArray *bookArr;// 书本数组

/// 添加

(void)addBook:(Book *)book;
/// 删除
(void)removeBookAtIndex:(NSUInteger)index;
/// 修改价格
(void)changePriceByName:(NSString *)name price:(CGFloat)price;
/// 打印清单
(void)printBookList;

@end

//
// Libaray.m
// OC6_练习
//
// Created by YIem. on 12/1/15.
// Copyright (c) 2015 www.yiem.net YIem博客. All rights reserved.
//

import "Libaray.h"

import "Book.h"

@implementation Libaray

pragma mark - 初始化

(instancetype)init
{
self = [super init];
if (self) {
```
// 可变数组初始化
self.bookArr = [NSMutableArray array];
```
}
return self;
}

pragma mark - 添加

(void)addBook:(Book *)book
{
```
[self.bookArr addObject:book];
```
}

pragma mark - 删除

(void)removeBookAtIndex:(NSUInteger)index
{
```
[self.bookArr removeObjectAtIndex:index];
```
}

pragma mark - 改价格

(void)changePriceByName:(NSString *)name price:(CGFloat)price
{
// 遍历数组
for (Book *b in self.bookArr) {
```
// 判断
if ([b.bookName isEqualToString:name]) {
    // 修改
    b.price = price;
}
```
}
}

pragma mark - 清单

(void)printBookList
{
for (Book *b in self.bookArr) {
```
NSLog(@"%@", b.bookName);
```
}
}

@end

import <Foundation/Foundation.h>

@interface Contact : NSObject
{

NSString *_name;

}
@property (nonatomic, copy) NSString name;/< 姓名 /
@property (nonatomic, copy) NSString sex;/< 性别 /
@property (nonatomic, copy) NSString phone;/< 电话号 /
@property (nonatomic, copy) NSString address;/< 地址 /
@property (nonatomic, copy) NSString groupName;/< 分组名 /
@property (nonatomic, assign) NSInteger age;/*< 年龄 /

// 初始化

(instancetype)initWithName:(NSString )name phone:(NSString )phone;
// 便利构造器
(instancetype)contactWithName:(NSString )name phone:(NSString )phone;
@end

import "Contact.h"

@implementation Contact

warning 同时重写getter和setter 不会自动产生成员变量需要重新设置synthesize

//@synthesize name = _name;

pragma mark - 初始化

(instancetype)initWithName:(NSString )name phone:(NSString )phone
{
self = [super init];
if (self) {
```
self.name = name;
self.phone = phone;
```
}
return self;
}
(void)setName:(NSString *)name
{
_name = name;
}
(NSString *)name
{
return _name;
}

pragma mark - 便利构造器

(instancetype)contactWithName:(NSString )name phone:(NSString )phone
{
Contact *c = [[Contact alloc] initWithName:name phone:phone];
return c;
}

pragma mark - 描述方法

(NSString *)description
{
return [NSString stringWithFormat:@"name: %@, phone: %@, sex: %@, address: %@, group: %@, age: %ld", self.name, self.phone, self.sex, self.address, self.groupName, self.age];
}

@end

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2015-12-01 objective-c OC6_练习

import <Foundation/Foundation.h>

import "Book.h"

import "Libaray.h"

import "Contact.h"

if 0

endif

if 0

endif

if 1

endif

import <Foundation/Foundation.h>

import "Book.h"

pragma mark - 初始化

pragma mark - 便利构造器

pragma mark - 描述方法

import <Foundation/Foundation.h>

import "Libaray.h"

import "Book.h"

pragma mark - 初始化

pragma mark - 添加

pragma mark - 删除

pragma mark - 改价格

pragma mark - 清单

import <Foundation/Foundation.h>

import "Contact.h"

warning 同时重写getter和setter 不会自动产生成员变量 需要重新设置synthesize

pragma mark - 初始化

pragma mark - 便利构造器

pragma mark - 描述方法

warning 同时重写getter和setter 不会自动产生成员变量需要重新设置synthesize