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[操作系统]OC中使用字典管理颜⾊


  处理⼯程⽂件crayons.txt中的⽂本信息,⽂本内容是关于颜色的,每⾏都是⼀个颜⾊的信息,例如:Almond #EED9C4,前⼀个字符串是颜⾊色的名称,后⼀个字符串是颜色的16进制⾊值,处理⽂本完成如下需求:

1、使用字典管理所有的颜⾊,即字典中存储的是多个键值对,颜⾊名称为key,16进制颜⾊色值(不带#)是value。

2、取出所有的key,升序排列.

3、取出所有的value,按照排序后的key排列。

4、使⽤用⼀个新的字典管理颜色,对颜⾊进⾏分类管理,即:“A”,“B”,“C”... 即这个字典包含多个键值对,key是26个字⺟母,value是数组,数组⾥存放的是 Color对象(包含name和colorValue)。需要⾃己创建Color类。

 

  首先,我们创建一个Color类,Color.h声明部分:

@interface Color : NSObject{  NSString * _name;  NSString * _value;}- (instancetype)initWithName:(NSString *)name value:(NSString *)value;- (NSString *)getName;- (NSString *)getValue;@end

Color.m实现部分:

#import "Color.h"@implementation Color- (instancetype)initWithName:(NSString *)name value:(NSString *)value{  self = [super init];  if (self) {    _name = name;    _value = value;  }  return self;}- (NSString *)getName{  return _name;}- (NSString *)getValue{  return _value;}- (NSString *)description{  return [NSString stringWithFormat:@"COLOR --> %@ %@",_name,_value];}@end

我们在main函数中实现题目的相关要求:

//从文档中读取字符串  NSString * dataString = [NSString stringWithContentsOfFile:@"/Users/liguoxiang/Desktop/Product/OC/Lesson/HomeWork-06/HomeWork-06/crayons.txt" encoding:NSUTF8StringEncoding error:nil];    NSLog(@"%@",dataString);    //将字符串以 \n 做分割,得到所有表示颜色的字符串,存储在dataArray中  NSArray * dataArray = [dataString componentsSeparatedByString:@"\n"];    //创建空的可变的字典,存储表示颜色的键值对  NSMutableDictionary * colorDic = [NSMutableDictionary dictionaryWithCapacity:[dataArray count]];    //快速枚举dataArray,得到表示颜色的字符串  for (NSString * colorString in dataArray) {        //分割colorString,得到颜色的名字和色值    NSArray * colorComponents = [colorString componentsSeparatedByString:@" #"];    NSString * colorName = colorComponents[0];    NSString * colorValue = colorComponents[1];        //将颜色的名字作为key,色值作为value,存储在字典中    [colorDic setObject:colorValue forKey:colorName];  }  //枚举结束后,输出管理颜色的字典  NSLog(@"color dic = %@",colorDic);    //创建分组字典  NSMutableDictionary * colorGroupDic = [NSMutableDictionary dictionaryWithCapacity:30];  //创建数组拿出所有key值  NSArray * colorNameArray = [colorDic allKeys];    for (int i = 0; i < [colorNameArray count]; i ++) {    //取出颜色的名称    NSString * name = colorNameArray[i];    //取出颜色对应的value值    NSString * value = [colorDic objectForKey:name];            //初始color对象    Color * c = [[Color alloc] initWithName:name value:value];    //groupName为颜色的首字母    NSString * groupName = [name substringToIndex:1];    //取出对应的分组名下的数组    NSMutableArray * oneGroup = [colorGroupDic objectForKey:groupName];            //如果输入为空    if (nil == oneGroup) {      //就在数组中添加color对象      oneGroup = [NSMutableArray arrayWithObject:c];      //然后将数组和分组名添加到字典中      [colorGroupDic setObject:oneGroup forKey:groupName];    }else{      //数组不为空,说明分组存在,直接添加就可以了      [oneGroup addObject:c];    }  }    NSLog(@"colorGroupDic = %@",colorGroupDic);

 关于题目中用到的颜色文档(crayons.txt),由于无法上传工程文件,我将其附在后面方便读者阅读,请读者自行粘贴创建text文档,

Almond #EED9C4Antique Brass #C88A65Apricot #FDD5B1Aquamarine #71D9E2Asparagus #7BA05BAtomic Tangerine #FF9966Banana Mania #FBE7B2Beaver #926F5BBittersweet #FE6F5EBlack #000000Blizzard Blue #A3E3EDBlue #0066FFBlue Bell #9999CCBlue Green #0095B6Blue Violet #6456B7Brick Red #C62D42Brink Pink #FB607FBrown #AF593EBurnt Orange #FF7034Burnt Sienna #E97451Cadet Blue #A9B2C3Canary #FFFF99Caribbean Green #00CC99Carnation Pink #FFA6C9Cerise #DA3287Cerulean #02A4D3Chartreuse #FF9966Chestnut #B94E48Copper #DA8A67Cornflower #93CCEACotton Candy #FFB7D5Cranberry #DB5079Dandelion #FED85DDenim #1560BDDesert Sand #EDC9AFEggplant #614051Electric Lime #CCFF00Fern #63B76CFlesh #FFCBA4Forest Green #5FA777Fuchsia #C154C1Fuzzy Wuzzy Brown #C45655Gold #E6BE8AGoldenrod #FCD667Granny Smith Apple #9DE093Gray #8B8680Green #01A368Green Yellow #F1E788Happy Ever After #6CDA37Hot Magenta #FF00CCInch Worm #B0E313Indian Red #B94E48Indigo #4F69C6Jazzberry Jam #A50B5EJungle Green #29AB87Laser Lemon #FFFF66Lavender #FBAED2Macaroni And Cheese #FFB97BMagenta #F653A6Magic Mint #AAF0D1Mahogany #CA3435Manatee #8D90A1Mango Tango #E77200Maroon #C32148Mauvelous #F091A9Melon #FEBAADMidnight Blue #003366Mountain Meadow #1AB385Mulberry #C54B8CNavy Blue #0066CCNeon Carrot #FF9933Olive Green #B5B35COrange #FF681FOrchid #E29CD2Outer Space #2D383AOutrageous Orange #FF6037Pacific Blue #009DC4Peach #FFCBA4Periwinkle #C3CDE6Pig Pink #FDD7E4Pine Green #01796FPink Flamingo #FF66FFPlum #843179Prussian Blue #003366Purple Heart #652DC1Purple Mountain's Majesty #9678B6Purple Pizzazz #FF00CCRadical Red #FF355ERaw Sienna #D27D46Razzle Dazzle Rose #FF33CCRazzmatazz #E30B5CRed #ED0A3FRed Orange #FF3F34Red Violet #BB3385Robin's Egg Blue #00CCCCRoyal Purple #6B3FA0Salmon #FF91A4Scarlet #FD0E35Screamin' Green #66FF66Sea Green #93DFB8Sepia #9E5B40Shadow #837050Shamrock #33CC99Shocking Pink #FF6FFFSilver #C9C0BBSky Blue #76D7EASpring Green #ECEBBDSunglow #FFCC33Sunset Orange #FE4C40Tan #FA9D5ATickle Me Pink #FC80A5Timberwolf #D9D6CFTorch Red #FD0E35Tropical Rain Forest #00755ETumbleweed #DEA681Turquoise Blue #6CDAE7Ultra Green #66FF66Ultra Orange #FF6037Ultra Pink #FF6FFFUltra Red #FD5B78Ultra Yellow #FFFF66Unmellow Yellow #FFFF66Violet (purple) #8359A3Violet Red #F7468AVivid Tangerine #FF9980Vivid Violet #803790White #FFFFFFWild Blue Yonder #7A89B8Wild Strawberry #FF3399Wild Watermelon #FD5B78Wisteria #C9A0DCYellow #FBE870Yellow Green #C5E17AYellow Orange #FFAE42