//
// main.m
// oc-遍歷和排序-homework
//// created by dllo on 16/2/25.
//#import #import "person.h"
int main(int argc, const char * argv)
nsmutablestring *str = [nsmutablestring stringwithcapacity:20];
for (nsstring *string in strarray)
nslog(@"%@", str);
// 要求:
// 1、建立1個包含5個person物件的陣列(姓名 英 ); 2、 for迴圈找到年齡最 的person物件; 3、 for...in遍歷陣列,把 於某個年齡的person物件的姓名後 拼接上字串「-brother」。
person *per1 = [[person alloc]initwithname:@"ma" ***:@"male" age:26];
person *per2 = [[person alloc]initwithname:@"liutaifeng" ***:@"male" age:22];
person *per3 = [[person alloc]initwithname:@"zhengfeng " ***:@"male" age:23];
person *per4 = [[person alloc]initwithname:@"ma" ***:@"male" age:27];
person *per5 = [[person alloc]initwithname:@"ma" ***:@"male" age:29];
nsarray *array = [nsarray arraywithobjects:per1, per2, per3, per4, per5, nil];
person *per = [[person alloc]initwithname:@"majian" ***:@"male" age:29];
for (int i = 0; i < array.count; i++)
}nslog(@"%@", [per name]);
nsarray *newarray = [array sortedarrayusingselector:@selector(comparewithname:)];
nslog(@"%@", newarray);
nsarray *newarray2 = [array sortedarrayusingselector:@selector(comparewith***:)];
nslog(@"%@", newarray2);
nsarray *newarray3 = [array sortedarrayusingselector:@selector(comparewithage:)];
nslog(@"%@", newarray3);
nssortdescriptor *sortofname = [[nssortdescriptor alloc]initwithkey:@"name" ascending:yes];
nssortdescriptor *sortofage = [[nssortdescriptor alloc]initwithkey:@"age" ascending:yes];
nsarray *array1 = [array sortedarrayusingdescriptors:@[sortofname, sortofage]];
nslog(@"%@", array1);
}return 0;
}
person.m檔案:
////oc-遍歷和排序-homework
////
created by dllo on 16/2/25.
////
#import
"person.h
"@implementation
person
- (instancetype)initwithname:(nsstring *)name ***:(nsstring *)*** age:(nsinteger)age
return
self;
}- (nscomparisonresult)comparewithname:(person *)anotherperson
- (nscomparisonresult)comparewithage:(person *)anotherperson
else
if(self.age else
}- (nscomparisonresult)comparewith***:(person *)anotherperson
- (nsstring *)description
@end
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