NSArray陣列內容排序

本文正對陣列內容為其他類物件和字串時，進行了排序操作。具體看看下面**：

deviceinfo.h

@inte***ce deviceinfo : nsobject

@property (nonatomic, assign) nsinteger sequenceid;
@property (nonatomic, strong) nsstring *deviceid;
@property (nonatomic, strong) nsstring *devicename;
@end

deviceinfo.m

#import "deviceinfo.h"

@implementation deviceinfo
@end

nsarraycomparetest.h"

#import @inte***ce nsarraycomparetest : nsobject

-(void)testcompare;
@end

nsarraycomparetest.m"

@implementation nsarraycomparetest

-(id)init
return self;
}-(void)testcompare
//對字串陣列進行排序
nscomparator cmptr = ^(id obj1, id obj2)
if ([obj1 integervalue] < [obj2 integervalue]) 
return (nscomparisonresult)nsorderedsame;
};nsarray *sortarray = [[nsarray alloc] initwithobjects:@"1",@"3",@"4",@"7",@"8",@"2",@"6",@"5",@"13",@"15",@"12",@"20",@"28",@"",nil];
//排序前
nsmutablestring *outputbefore = [[nsmutablestring alloc] init];
for(nsstring *str in sortarray)
nslog(@"排序前:%@\n",outputbefore);
for(nsinteger i = 0; i < [sortarray count]; i++)
//第一種排序
nsarray *stringarray = [sortarray sortedarrayusingcomparator:cmptr];
nsmutablestring *outputafter = [[nsmutablestring alloc] init];
for(nsstring *str in stringarray)
nslog(@"排序後:%@\n",outputafter);
for(nsinteger i = 0; i < [sortarray count]; i++)
}@end

執行**：

nslog(@"-------------nsarray_sort_start--------------");

nsarraycomparetest *sorttest=[[nsarraycomparetest alloc] init];
[sorttest testcompare];
nslog(@"-------------nsarray_sort_end--------------");

結果：

2015-02-13 11:32:58.918 iosstudy-01[5119:69341] -------------nsarray_sort_start--------------

2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 1--------devicename_1
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 2--------devicename_2
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 3--------devicename_3
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 排序前:134782651315122028
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 1
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 3
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 4
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 7
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 8
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 2
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 6
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 5
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 13
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 15
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 12
2015-02-13 11:32:58.919 iosstudy-01[5119:69341] 20
2015-02-13 11:32:58.920 iosstudy-01[5119:69341] 28
2015-02-13 11:32:58.920 iosstudy-01[5119:69341] 排序後:123456781213152028
2015-02-13 11:32:58.920 iosstudy-01[5119:69341] 1
2015-02-13 11:32:58.923 iosstudy-01[5119:69341] 3
2015-02-13 11:32:58.923 iosstudy-01[5119:69341] 4
2015-02-13 11:32:58.923 iosstudy-01[5119:69341] 7
2015-02-13 11:32:58.923 iosstudy-01[5119:69341] 8
2015-02-13 11:32:58.923 iosstudy-01[5119:69341] 2
2015-02-13 11:32:58.923 iosstudy-01[5119:69341] 6
2015-02-13 11:32:58.924 iosstudy-01[5119:69341] 5
2015-02-13 11:32:58.924 iosstudy-01[5119:69341] 13
2015-02-13 11:32:58.924 iosstudy-01[5119:69341] 15
2015-02-13 11:32:58.924 iosstudy-01[5119:69341] 12
2015-02-13 11:32:58.924 iosstudy-01[5119:69341] 20
2015-02-13 11:32:58.924 iosstudy-01[5119:69341] 28
2015-02-13 11:32:58.925 iosstudy-01[5119:69341] -------------nsarray_sort_end--------------

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