NSArray利用Cocoa框架进行汉字排序

NSArray利用Cocoa框架进行汉字排序

在NSString有一个函数localizedCompare:,它的功能是通过自身与给定字符串的比較，返回一个本地化的比較结果。也就是说这个函数是支持汉字比較的。

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:@"电脑"
andStuScore:34.5
andStuSex:@"男"
andStuAge:20];

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

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

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

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(@"排序后");

for (Student *stu
in newArry) {

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

}

;

这样做会有几方面的优点：1
支持多个汉字按字母序排序（若第一个字的第一个字母同样。则按第一个字的第二个字母比較，若第一个字的字母全然同样，按第二个字的首字母继续排序）。 2原本可能须要保存汉字拼音的地方。如今不须要了。

3
能够通过对nickNameSortde进一步定制。完毕更复杂的比較，比方先比較会员状态，在按姓名字母序完毕比較。4总体结构简单
使用的都是CocaTouch框架下的的方法。