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处理?程?件crayons.txt中的?本信息,?本内容是关于颜色的,每?都是?个颜?的信息,例如:Almond #EED9C4,前?个字符串是颜?色的名称,后?个字符串是颜色的16进制?值,处理?本完成如下需求:
1、使用字典管理所有的颜?,即字典中存储的是多个键值对,颜?名称为key,16进制颜?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?个新的字典管理颜色,对颜?进?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,value是数组,数组?存放的是 Color对象(包含name和colorValue)。需要?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 #EED9C4 Antique Brass #C88A65 Apricot #FDD5B1 Aquamarine #71D9E2 Asparagus #7BA05B Atomic Tangerine #FF9966 Banana Mania #FBE7B2 Beaver #926F5B Bittersweet #FE6F5E Black #000000 Blizzard Blue #A3E3ED Blue #0066FF Blue Bell #9999CC Blue Green #0095B6 Blue Violet #6456B7 Brick Red #C62D42 Brink Pink #FB607F Brown #AF593E Burnt Orange #FF7034 Burnt Sienna #E97451 Cadet Blue #A9B2C3 Canary #FFFF99 Caribbean Green #00CC99 Carnation Pink #FFA6C9 Cerise #DA3287 Cerulean #02A4D3 Chartreuse #FF9966 Chestnut #B94E48 Copper #DA8A67 Cornflower #93CCEA Cotton Candy #FFB7D5 Cranberry #DB5079 Dandelion #FED85D Denim #1560BD Desert Sand #EDC9AF Eggplant #614051 Electric Lime #CCFF00 Fern #63B76C Flesh #FFCBA4 Forest Green #5FA777 Fuchsia #C154C1 Fuzzy Wuzzy Brown #C45655 Gold #E6BE8A Goldenrod #FCD667 Granny Smith Apple #9DE093 Gray #8B8680 Green #01A368 Green Yellow #F1E788 Happy Ever After #6CDA37 Hot Magenta #FF00CC Inch Worm #B0E313 Indian Red #B94E48 Indigo #4F69C6 Jazzberry Jam #A50B5E Jungle Green #29AB87 Laser Lemon #FFFF66 Lavender #FBAED2 Macaroni And Cheese #FFB97B Magenta #F653A6 Magic Mint #AAF0D1 Mahogany #CA3435 Manatee #8D90A1 Mango Tango #E77200 Maroon #C32148 Mauvelous #F091A9 Melon #FEBAAD Midnight Blue #003366 Mountain Meadow #1AB385 Mulberry #C54B8C Navy Blue #0066CC Neon Carrot #FF9933 Olive Green #B5B35C Orange #FF681F Orchid #E29CD2 Outer Space #2D383A Outrageous Orange #FF6037 Pacific Blue #009DC4 Peach #FFCBA4 Periwinkle #C3CDE6 Pig Pink #FDD7E4 Pine Green #01796F Pink Flamingo #FF66FF Plum #843179 Prussian Blue #003366 Purple Heart #652DC1 Purple Mountain‘s Majesty #9678B6 Purple Pizzazz #FF00CC Radical Red #FF355E Raw Sienna #D27D46 Razzle Dazzle Rose #FF33CC Razzmatazz #E30B5C Red #ED0A3F Red Orange #FF3F34 Red Violet #BB3385 Robin‘s Egg Blue #00CCCC Royal Purple #6B3FA0 Salmon #FF91A4 Scarlet #FD0E35 Screamin‘ Green #66FF66 Sea Green #93DFB8 Sepia #9E5B40 Shadow #837050 Shamrock #33CC99 Shocking Pink #FF6FFF Silver #C9C0BB Sky Blue #76D7EA Spring Green #ECEBBD Sunglow #FFCC33 Sunset Orange #FE4C40 Tan #FA9D5A Tickle Me Pink #FC80A5 Timberwolf #D9D6CF Torch Red #FD0E35 Tropical Rain Forest #00755E Tumbleweed #DEA681 Turquoise Blue #6CDAE7 Ultra Green #66FF66 Ultra Orange #FF6037 Ultra Pink #FF6FFF Ultra Red #FD5B78 Ultra Yellow #FFFF66 Unmellow Yellow #FFFF66 Violet (purple) #8359A3 Violet Red #F7468A Vivid Tangerine #FF9980 Vivid Violet #803790 White #FFFFFF Wild Blue Yonder #7A89B8 Wild Strawberry #FF3399 Wild Watermelon #FD5B78 Wisteria #C9A0DC Yellow #FBE870 Yellow Green #C5E17A Yellow Orange #FFAE42
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原文地址：http://www.cnblogs.com/Harbingwang/p/4995984.html
