iOS 开发 OC编程字典和集合排序方法

// main.m

// oc- 05 字典和集合

// Created by dllo on 15/10/29.

#import <Foundation/Foundation.h>

#import "Color.h"

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

// 不可变字典

//创建初始化存储时无序的,其实存储是一种算法

//NSDictionary dictionaryWithObjectsAndKeys:value1,key1, value2, key2,....., nil

// NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:@"王宁", @"name", @"男", @"sex", @"瑜伽", @"hobby", nil];

// //输出通过key访问value

// NSLog(@"%@", [dic objectForKey:@"name"]);

// for (NSInteger i = 0; i < dic.allKeys.count; i++) {

// //先通过下标获取key

// NSString *key = [dic.allKeys objectAtIndex:i];

// //再通过key获取value

// NSLog(@"%@", [dic objectForKey:[dic.allKeys objectAtIndex:i]]);

// }

// NSDictionary *str = [NSDictionary dictionaryWithObjectsAndKeys:@"大哥", @"name", @"男神", @"sex", @"英雄联盟", @"like", nil];

// for (NSInteger i = 0; i < str.allKeys.count; i++) {

// NSLog(@"%@", str.allKeys);

// NSLog(@"%@", [str objectForKey:[str.allKeys objectAtIndex:i]]);

// NSString *key = [str.allKeys objectAtIndex:i];

// NSLog(@"%@", [str objectForKey:key]);

// NSString *value = [str.allValues objectAtIndex:i];

// }

//可变字典比较常用

//创建&初始化

// NSMutableDictionary *dic = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"王宁", @"name", @"男", @"sex", @"瑜伽", @"hobby", nil];

// NSMutableDictionary *dic1 = [NSMutableDictionary dictionary];

//添加修改

//若key值存在则修改, 不存在则添加

// [dic setObject:@"王宁宁" forKey:@"name"];

//删除

// [dic removeObjectForKey:@"sex"];

//集合

//不可变集合

//注意 1 集合注重的操作方式是判断是否包含,判断交集并集等

// 2 集合中的元素具有唯一性,若重复保留一个

// NSSet *set = [NSSet setWithObjects:@"1", @"2", @"3", @"2", nil];

//个数

// NSLog(@"%ld", set.count);

//获取任意一个元素

// NSLog(@"%@", [set anyObject]);

//判段是否包含一个元素

// NSLog(@"%d", [set containsObject:@"2"]);

//可变集合

// NSMutableSet *str =[NSMutableSet setWithObjects:@"1", @"2", @"3", nil];

// NSMutableSet *str2 =[ NSMutableSet setWithObjects:@"3", @"4", @"5", nil];

//合并

// [str unionSet:str2];

//添加

// [str addObject:@"9"];

//交集

// [str intersectSet:str2];

//删除

// [str removeObject:@"9"];

//可判断重复元素个数的集合

// NSCountedSet *str3 = [NSCountedSet setWithObjects:@"3", @"4", @"5", nil];

//元素个数

// NSLog(@"%ld", str3.count);

//重复的元素个数

// NSLog(@"%ld", [str3 countForObject:@"2"]);

//快速枚举

//数组

//遍历打印

// NSArray *arr = [NSArray arrayWithObjects:@"1", @"2", @"3" ,nil];

// for (NSInteger i = 0; i < arr.count; i++) {

// NSLog(@"%@",[arr objectAtIndex:i]);

// }

// for (NSString *c in arr) {

// NSLog(@"%@", c);

// }

//字典的快速枚举

// NSMutableDictionary *dic4 = [NSMutableDictionary dictionaryWithObjectsAndKeys:@"王宁", @"name", @"男", @"sex", @"瑜伽", @"hobby", nil];

//注意遍历字典得到的是key

// for (NSString *key in dic4) {

// NSLog(@"%@", [dic objectForKey:key]);

// }

//集合的快速枚举

// NSMutableSet *str5 =[NSMutableSet setWithObjects:@"1", @"2", @"3", nil];

// for (NSString *s in str5) {

// NSLog(@"%@", s);

// }

//注意!!! 快速枚举- 不要在 forin中改变被遍历的collection(换一句话说, 就是只能读,不能写改)

//可变数组的冒泡排序

// NSMutableArray *arr3 = [NSMutableArray arrayWithObjects:@"4", @"3" ,@"5", @"9",nil];

// for (NSInteger i = 0; i < [arr3 count] - 1; i++) {

// for (NSInteger j = 0; j < [arr3 count] - 1 - i; j++) {

// if ([[arr3 objectAtIndex:j] compare: [arr3 objectAtIndex:j + 1]] > 0) {

// [arr3 exchangeObjectAtIndex:j withObjectAtIndex:j + 1];

// }

// for (NSString *e in arr3) {

// NSLog(@"%@", e);

// }

//可变数组排序方法

// NSMutableArray *arr3 = [NSMutableArray arrayWithObjects:@"4", @"3" ,@"5", @"9",nil];

// [arr3 sortUsingSelector:@selector(compare:)];

// for (NSString *e in arr3) {

// NSLog(@"%@", e);

// }

// 不可变数组排序方法

// NSArray *arr5 = [NSArray arrayWithObjects:@"4", @"3" ,@"5", @"9",nil];

// NSArray * stre = [arr5 sortedArrayUsingSelector:@selector(compare:)];

// for (NSString *e in stre) {

// NSLog(@"%@", e);

// }

//作业

NSString *filePath = @"/Users/dllo/Desktop/oc- 05 字典和集合/oc- 05 字典和集合/File";

NSString *str9 = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];

//NSLog(@"%@", str9);

NSMutableArray *arr9 =[ NSMutableArray array];

NSMutableArray *key =[ NSMutableArray array];

NSMutableArray *value =[ NSMutableArray array];

NSMutableDictionary *color = [NSMutableDictionary dictionary];

NSArray *arr8 = [str9 componentsSeparatedByString:@" "];

//NSLog(@"%@", arr8);

for (NSInteger i = 0; i < arr8.count; i++) {

NSArray *arr7 = [[arr8 objectAtIndex:i] componentsSeparatedByString:@" #"];

[arr9 addObjectsFromArray:arr7];

}

// NSLog(@"%@",arr9);

for (NSInteger i = 0; i < arr9.count; i++) {

if (i % 2 == 0) {

[key addObject:[arr9 objectAtIndex:i]];

} else {

[value addObject:[arr9 objectAtIndex:i]];

}

// NSLog(@"%@",key);

//取出所得key值升序排列

[color setObject:value forKey:key];

// [color.allKeys sortedArrayUsingSelector:@selector(compare:)];

// // NSLog(@"%@", color.allKeys);

// NSLog(@"%@", arr2);

// NSLog(@"%@",arr1);

//取出所有的Value的值,按照排序后的key排列

[color.allValues sortedArrayUsingSelector:@selector(compare:)];

// for (NSString *b in color) {

// NSLog(@"%@", [color objectForKey:b]);

// }

//使用一个新的字典管理颜色,对颜色分类,"A", "B', "C", "D"...即这个字典包含多个键值对,key是26个字母,value是数组.数组里面存放的是color对象,需要自己创建color类.

// NSString *filePath = @"/Users/dllo/Desktop/oc- 05 字典和集合/oc- 05 字典和集合/File";

//文件地址

// NSString * str2 = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:nil];

//解析文件,接受文件内容

// NSArray *arr1 = [str2 componentsSeparatedByString:@" "];

//对文件进行每一行操作

//NSMutableDictionary *color2 =[[NSMutableDictionary alloc]init];

//初始化一个字典

// for (NSString *newstring in arr1) {

// NSArray *arr = [newstring componentsSeparatedByString:@" #"

// ];

//对每一行进行分割,返回数组

// [color2 setObject:arr[1] forKey:arr[0]];

// 将数组中的值取出来,添加到数据字典

// }

// NSArray *allkey = [color2 allKeys];

//get方法取得所有的key的值

// NSArray *newkey = [allkey sortedArrayUsingSelector:@selector(compare:)];

// NSLog(@"%@",newkey);

//取出所有的key值按照升序排列

// [[color2 allValues] sortedArrayUsingSelector:@selector(compare:)];

// for (NSString *b in color2) {

// NSLog(@"%@", [color2 objectForKey:b]);

// }

//4444

int a = 65;

NSMutableDictionary *newColor =[NSMutableDictionary dictionary];

for (NSInteger i = 0; i < 26 ; i++) {

//NSMutableArray *colorValueArr = [NSMutableArray array];

//Color *color1 = [[Color alloc]init];

//NSMutableArray *value = [NSMutableArray array];

NSMutableArray *key = [NSMutableArray array];

//[colorValueArr addObject:color];

[key addObject:[NSString stringWithFormat:@"%c", a++ ]];

[newColor setObject:value forKey:key];

}

// for (NSString *key in color) {

// NSString *keyHead = [key substringToIndex:1];

// NSMutableArray *colorValueArr = [NSMutableArray array];

// Color *color1 = [[Color alloc]initWithName: key colorValue:[color valueForKey:key]];

// [colorValueArr addObject:color1];

// [[newColor valueForKey:keyHead] addObject:color1];

// }

for (NSString *keys in color) {

// NSMutableArray *value = [NSMutableArray array];

NSString *str = [keys substringFromIndex:1];

NSLog(@"%@",str);

Color *p = [[Color alloc]init];

[p setColorName:keys];

[p setColorValue:[color valueForKey:keys]];

NSMutableArray *value = [newColor objectForKey:str];

if (value == nil) {

value = [NSMutableArray array];

[newColor setObject:value forKey:str];

}

[value addObject:p];

}

for (NSString *key in newColor) {

for (Color *color1 in [color valueForKey:key]) {

NSLog(@"key = %@,name = %@,value = %@", key, [color1 colorName], [color1 colorValue] );

}

return 0;

}

iOS 开发 OC编程 字典和集合 排序方法

iOS 开发 OC编程字典和集合排序方法