iOS 中文排序、数组、字典排序

数组内中文排序

看够了复杂的中文排序封装代码，让我们来点小清新，其实苹果不但为我们提供好了排序方法，并且带有多音字区分，贴心到想哭有木有？

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NSArray *dataArr = @[@"苹果",@"重庆",@"安阳",@"重点",@"加班",@"沈阳", @"iOS",@"Young"];
NSArray *rankArr = [dataArr sortedArrayUsingSelector:@selector(localizedCompare:)];
NSLog(@"\n中文升序：%@", [rankArr my_description]);

中文升序：(
    "安阳",
    "重庆",
    "加班",
    "苹果",
    "沈阳",
    "天气",
    "重点",
    iOS,
    Young
)

也许您会问my_description方法是什么鬼，因为中文在控制台输出为Unicode，不够直观，所以加了个为数组加了个类扩展方法，简单有效，不敢私藏，仅供参考：

//  .h 声明
#import 

@interface NSArray (Unicode)

- (NSString*)my_description;

@end

// .m 实现
#import "NSArray+Unicode.h"

@implementation NSArray (Unicode)

- (NSString*)my_description {
    NSString *desc = [self description];
    desc = [NSString stringWithCString:[desc cStringUsingEncoding:NSUTF8StringEncoding] 
                              encoding:NSNonLossyASCIIStringEncoding];
    return desc;
}

@end

然而后台小伙伴怎么会给我们如此简单的数据，经常是数组内套字典，然后我们转为模型使用才是常规操作。Talk is cheap. Show me the code.

NSArray *dictArr = @[@{@"name": @"苹果",   @"word" : @"Apple",   @"number" : @(520)},
                     @{@"name": @"重庆",   @"word" : @"Banana",  @"number" : @(1314)},
                     @{@"name": @"安阳",   @"word" : @"China",   @"number" : @(7)},
                     @{@"name": @"加班",   @"word" : @"996.ICU", @"number" : @(119)},
                     @{@"name": @"重点",   @"word" : @"Do",      @"number" : @(54)},
                     @{@"name": @"天气",   @"word" : @"YOU",     @"number" : @(120)},
                     @{@"name": @"沈阳",   @"word" : @"Love",    @"number" : @(114)},
                     @{@"name": @"iOS",   @"word" : @"Me",      @"number" : @(211)},
                     @{@"name": @"Young", @"word" : @"YES",     @"number" : @(521)}];

// 中文排序
NSSortDescriptor *nameSortDesc = [NSSortDescriptor sortDescriptorWithKey:@"name"
                                                               ascending:YES
                                                                selector:@selector(localizedCompare:)];
NSArray *nameRankArr = [dictArr sortedArrayUsingDescriptors:@[nameSortDesc]];
NSLog(@"\n 按name排序升序: %@", [nameRankArr my_description]);

// 英文、数字排序
NSSortDescriptor *numSortDesc = [NSSortDescriptor sortDescriptorWithKey:@"number"
                                                              ascending:YES];
NSArray *numRankArr = [dictArr sortedArrayUsingDescriptors:@[numSortDesc]];
NSLog(@"\n 按number升序：%@", [numRankArr my_description]);

按name排序升序: (
        {
        name = "安阳";
        number = 7;
        word = China;
    },
        {
        name = "重庆";
        number = 1314;
        word = Banana;
    },
        {
        name = "加班";
        number = 119;
        word = "996.ICU";
    },
        {
        name = "苹果";
        number = 520;
        word = Apple;
    },
        {
        name = "沈阳";
        number = 114;
        word = Love;
    },
        {
        name = "天气";
        number = 120;
        word = YOU;
    },
        {
        name = "重点";
        number = 54;
        word = Do;
    },
        {
        name = iOS;
        number = 211;
        word = Me;
    },
        {
        name = Young;
        number = 521;
        word = YES;
    }
)

打印有点长，按number升序的输出我就不贴出来了，结果没毛病的，请保留一点人与人之间的信任，有问题欢迎留言