NSArray利用Cocoa框架進行漢字排序

NSArray利用Cocoa框架進行漢字排序

在NSString有一個函數localizedCompare:,它的功能是經過自身與給定字符串的比較，返回一個本地化的比較結果。也就是說這個函數是支持漢字比較的。

Student.h

@interface Student : NSObject

@property(nonatomic,copy)NSString *stuName;

@property(nonatomic,assign)CGFloat stuScore;

@property(nonatomic,copy)NSString *stuSex;

@property(nonatomic,assign)NSInteger stuAge;

-(id)initWithName:(NSString *)stuName

      andStuScore:(CGFloat) stuScore

        andStuSex:(NSString *) stuSex

        andStuAge:(NSInteger) stuAge;

+(id)StudentWithName:(NSString *)stuName

         andStuScore:(CGFloat) stuScore

           andStuSex:(NSString *) stuSex

           andStuAge:(NSInteger) stuAge;

@end

Student.m

@implementation Student

-(id)initWithName:(NSString *)stuName

      andStuScore:(CGFloat) stuScore

        andStuSex:(NSString *) stuSex

        andStuAge:(NSInteger) stuAge{

    self = [super init];

    if (self) {

        _stuName = stuName;

        _stuScore = stuScore;

        _stuSex = stuSex;

        _stuAge = stuAge;

    }

    return self;

}

+(id)StudentWithName:(NSString *)stuName

         andStuScore:(CGFloat) stuScore

           andStuSex:(NSString *) stuSex

           andStuAge:(NSInteger) stuAge{

    Student *stu = [[Student alloc] initWithName:stuName andStuScore:stuScore andStuSex:stuSex andStuAge:stuAge];

    return stu;

}

@end

main.m

Student *stu1 = [[Student alloc] initWithName:@"電腦" andStuScore:34.5 andStuSex:@"男" andStuAge:20];

    Student *stu2 = [[Student alloc] initWithName:@"鼠標" andStuScore:34.7 andStuSex:@"男" andStuAge:21];

    Student *stu3 = [[Student alloc] initWithName:@"鍵盤" andStuScore:45.6 andStuSex:@"nan" andStuAge:22];

    Student *stu4 = [[Student alloc] initWithName:@"顯示器" andStuScore:34.6 andStuSex:@"男" andStuAge:23];

    NSArray *stuArray1 = [[NSArray alloc]initWithObjects:stu1,stu2,stu3,stu4,nil];

    

    NSArray *newArry = [stuArray1 sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {

        Student *stu1,*stu2;

        stu1 = (Student *)obj1;

        stu2 = (Student *)obj2;

        return [stu1.stuName localizedCompare:stu2.stuName];

    }];

    NSLog(@"未排序前:");

    for (Student *stu in stuArray1) {

        NSLog(@"name = %@,score = %g,sex = %@,age = %ld",stu.stuName,stu.stuScore,stu.stuSex,stu.stuAge);

    }

    NSLog(@"排序後");

    for (Student *stu in newArry) {

        NSLog(@"name = %@,score = %g,sex = %@,age = %ld",stu.stuName,stu.stuScore,stu.stuSex,stu.stuAge);

    }

    return 0;

這樣作會有幾方面的優勢：1 支持多個漢字按字母序排序（若第一個字的第一個字母一樣。則按第一個字的第二個字母比較，若第一個字的字母全然一樣，按第二個字的首字母繼續排序）。 2本來可能需要保存漢字拼音的地方。現在不需要了。

3 可以經過對nickNameSortde進一步定製。完畢更復雜的比較，比方先比較會員狀態，在按姓名字母序完畢比較。4整體結構簡單 使用的都是CocaTouch框架下的的方法。