# OBjective-C:在可变数组NSMutableArray中添加相同对象后,进行自定义的排序方式输出

以下为自定义的排序方式的实现

 1 #import "Person+Compare.h"
2
3 @implementation Person (Compare)
4 -(NSComparisonResult)CompareByName:(Person*)aPerson
5 {
6     return [self.name compare:aPerson.name];
7 }
8 -(NSComparisonResult)CompareByAge:(Person*)aPerson
9 {
10     if(self.age > aPerson.age)
11         return NSOrderedDescending;
12     else if (self.age < aPerson.age)
13         return NSOrderedAscending;
14     else
15         return NSOrderedSame;
16 }
17 @end

主函数测试：

#import <Foundation/Foundation.h>

#import "Person+Compare.h"

#import "Person.h"

int main(int argc, const char * argv[])

{

@autoreleasepool

{

NSMutableArray *personArray = [[NSMutableArray alloc]initWithCapacity:20];

//按姓名排序

NSMutableArray *sortedByName = [NSMutableArray arrayWithArray:[personArray sortedArrayUsingSelector:@selector(CompareByName:)]];

NSLog(@"%@",sortedByName);

//按年龄排序

NSMutableArray *sortedByAge = [NSMutableArray arrayWithArray:[personArray sortedArrayUsingSelector:@selector(CompareByAge:)]];

NSLog(@"%@",sortedByAge);

}

return 0;

}

测试结果为：

2015-08-18 18:03:26.997 可变数组的排序[2079:120917] (
"name=Bruth,age=24",
"name=Jhon,age=19",
"name=Smith,age=21",
"name=Tom,age=20"
)
2015-08-18 18:03:26.998 可变数组的排序[2079:120917] (
"name=Jhon,age=19",
"name=Tom,age=20",
"name=Smith,age=21",
"name=Bruth,age=24"
)
Program ended with exit code: 0

posted @ 2015-08-18 18:04  XYQ全哥  阅读(590)  评论(0编辑  收藏  举报