Swift基礎(chǔ)語法數(shù)組對(duì)比OC

1、Swift基礎(chǔ)語法-數(shù)組-對(duì)比OC數(shù)組定義（比較OC與Swift的數(shù)組）1.1. 有值數(shù)組/oc有值數(shù)組NSArray*arr0=1,2,3;NSArray*arr1=NSArrayarrayWithObjects:1,2,3,nil;NSLog("%",arr1);/*輸出纟吉果：2016-01-0601:04:49.180test11687:2096671(1,2,3)*/swift有值數(shù)組vararr0=1,2,3vararr1:Array=1,2,3vararr2:Array<Int>=1,2,3vararr3:Int=1,2,3print(arr3)輸

2、出結(jié)果:1,2,3I...1.11.2. 空數(shù)組oc空數(shù)組NSArray*arr=;NSArray*arr1=NSArrayarray;NSLog("%",arr1);/*輸出結(jié)果：2016-01-0601:06:04.132test11703:2106199()*/swift空數(shù)組vararr5=vararr6=lnt()vararr7=Array<lnt>()print(arr7)輸出結(jié)果:1.3. 可變與不可變數(shù)組/ocNSArray/不可變數(shù)組：NSMutableArray/可變數(shù)組:/swift可變數(shù)組：vararr8=不可

3、變數(shù)組:letarr9=1.4. 元素類型oc：NSArray*arr=1,"cdh",130;NSLog("%”,arr);/*輸出結(jié)果：2016-01-0601:13:07.987test11891:2163044(1,cdh,130)*/swift:(常用寫法)vararr=1,"CDH",130/編譯器自行推導(dǎo)出arr:NSObjectprint(arr)輸出結(jié)果:1,CDH,130/如果想明確表示數(shù)組中存放的是不同類型的數(shù)據(jù)可以使用Any或者NSObject關(guān)鍵字，表示數(shù)組中可以存放不同類型的數(shù)據(jù)vararr10:Array<A

4、ny>=1,"CDH",130/存放的字符串是帶有雙引號(hào)的print(arr10)輸出結(jié)果:1,"CDH",130/注意打印出來的字符串是帶有雙引號(hào)的vararr12:NSObject=2,"cdh",18print(arr12)輸出結(jié)果:2,cdh,18指定數(shù)組當(dāng)中只能存放Int型，如果存放其它類型會(huì)直接報(bào)錯(cuò)vararr14:Array<Int>=1,10,130print(arr14)輸出結(jié)果:1,10,130vararr15:lnt=1,2,3print(arr15)輸出結(jié)果:1,2,3二.數(shù)組操作2.1.獲取

5、長度/OC:NSArray*arr=1,2,3;NSLog("%tu",arr.count);輸出結(jié)果：2016-01-0601:19:54.874test12086:22091803X&WWWQM*/swift:vararr=1,2,3print(arr.count)輸出結(jié)果:32.2.判斷是否為空oc：NSArray*arr=;NSLog("result=%d",arr.count!=0);輸出結(jié)果：2016-01-0601:25:14.252OCTest12249:2255O1Oresult=0vararr1=1,2,3print(arr1

6、.isEmpty)輸出結(jié)果：false注意：只有該數(shù)組有指定的存儲(chǔ)類型,或者數(shù)組中有元素才能使用isEmpty這個(gè)方法,不然會(huì)報(bào)錯(cuò)，比如:vararr=這是個(gè)空的數(shù)組,而且有沒有指定類型，只表示為Array類型print(arr.isEmpty)/是會(huì)報(bào)錯(cuò)的t;淞;魏;關(guān);騒;逑;報(bào);讖;關(guān);騒;逑;報(bào);讖;關(guān);騒;逑;報(bào);讖;關(guān);騒;逑;報(bào);讖;關(guān);騒;關(guān);超;讖;濾;騒;關(guān);超;讖;濾;騒;關(guān);超;讖;濾;騒;和輸對(duì)琛農(nóng);輸對(duì)琛農(nóng);輸對(duì)琛農(nóng);輸對(duì)琛農(nóng);輸對(duì)琛農(nóng);貝說;對(duì)2.3.檢索oc：NSArray*arr=1,2,3;NSLog("%",arr0);輸出結(jié)果：201

7、6-01-0601:26:46.816OCTest12275:22698531/swift:vararr2=1,2,3print(arr20)輸出結(jié)果:12.4.追加oc：NSMutableArray*arr=NSMutableArrayarrayWithObjects:1,2,3,nil;arraddObject:4;NSLog("%",arr);/*輸出結(jié)果：2016-01-0601:28:47.111OCTest12297:2286198(1,2,3,4)*/swift:vararr3=1,2,3arr3.append(4);print(arr3)輸出結(jié)果:1,2,3

8、,4vararr4=1,2,3arr4+=4print(arr4)輸出結(jié)果:1,2,3,4vararr5=1,2,3arr5+=4arr5+=5,6,7輸出結(jié)果:1,2,3,4,5,6,7vararr6=1,2,3arr6+=4arr6+=5,6,7arr6+=arr60.3print(arr6)輸出結(jié)果:1,2,3,4,5,6,7,1,2,3,4.SwwwwSSwwwwSSwwwK"-.VJWI;:;:;:;2.5.插入oc：NSMutableArray*arr=NSMutableArrayarrayWithObjects:1,2,3,nil;arrinsertObject:4at

9、lndex:O;NSLog("%”,arr);/*輸出結(jié)果：2016-01-0601:36:10.450OCTest12374:2339079(4,1,2,3)*/swift:vararr7=1,2,3arr7.insert(4,atIndex:0);print(arr7)輸出結(jié)果:4,1,2,3i-i:矽挖挖矽:矽挖挖矽:矽挖挖矽:矽英殳康:i:矽挖挖矽:矽挖挖矽:矽挖挖矽握縈挖矽:矽挖挖矽:矽挖矽抵殳矽矽:題W矽矽抵殳矽矽抵殳矽矽:題W矽矽抵殳矽矽抵殳矽矽:題W矽矽:題W矽矽<<<<C<<A<<<<<<C&l

10、t;<A<<<<<<C<<AC<<<<<C<<A<<<<<<C<<A<<<<<<C<<A<<<<<<C<<A<<<<<<C<<A<<<<<<C<<A<<2.6.更新/OC:NSMutableArray*arr=NSMutableArrayarrayWi

11、thObjects:1,2,3,nil;arr0=8;NSLog("%",arr);/*輸出結(jié)果：2016-01-0601:37:28.482OCTest12397:2350177(8,2,3)*/:MMI/swift:vararr8=1,2,3arr80=8print(arr8)輸出結(jié)果:8,2,32.7.刪除oc：NSMutableArray*arr1=NSMutableArrayarrayWithObjects:1,2,3,nil;arr1removeObject:1;NSLog("%",arr1);NSMutableArray*arr2=NSMu

12、tableArrayarrayWithObjects:1,2,3,nil;arr2removeLastObject;NSLog("%",arr2);NSMutableArray*arr3=NSMutableArrayarrayWithObjects:1,2,3,nil;arr3removeAIIObjects;NSLog("%",arr3);/*輸出纟吉果：2016-01-0601:39:49.831OCTest12418:2370779(2,3)2016-01-0601:39:49.832OCTest12418:2370779(1,2)2016-01-

13、0601:39:49.832OCTest12418:2370779()*/swift:vararr9=1,2,3arr9.removeAtlndex(0)print(arr9)/輸出結(jié)果:2,3vararr10=1,2,3arr10.removeLast()print(arr10)/輸出結(jié)果:1,2vararr11=1,2,3是否保持容量,如果為true,即便刪除了容量依然存在,容量是2的倍數(shù)arr11.removeAll(keepCapacity:false)print(arr11)print(arr11.capacity)輸出結(jié)果：/02.8.Rangeoc：NSMutableArray*

14、arr=NSMutableArrayarrayWithObjects:1,2,3,nil;arrremoveObjectslnRange:NSMakeRange(0,2);NSLog("%”,arr);/*輸出結(jié)果：2016-01-0601:43:17.863OCTest12441:2396986(3)*/WJ-K-WSJWWWWW愆$履苓勲燃蟲：$:苓$:悠$履苓盤:悠$越£:越！$曲越哎:越裂越£:越裂越£:越£逆蝕；:越裂越£:越裂越£:越裂黑甕；:越裂越£:越裂履W/swift:vararr12=1,2,3

15、arr12.removeRange(Range(start:1,end:2)/這里3.0之后就不能用這個(gè)Range(start:,end:)方法了而是推薦使用range=.<這樣的取范圍print(arr12)輸出結(jié)果:1,3vararr13=1,2,3arr13.removeRange(0.0)print(arr13)輸出結(jié)果:2,3varrange14=0.5print(range14)輸出結(jié)果:0.<6三.數(shù)組的其它操作3.1.數(shù)組的批量操作/OC:NSMutableArray*arr=NSMutableArrayarrayWithObjects:1,2,3,nil;NSRa

16、ngerange=NSMakeRange(0,2);arrreplaceObjectslnRange:rangewithObjectsFromArray:99,88,77,66;NSLog("%",arr);/*輸出纟吉果：2016-01-0614:56:45.493OCTest3599:667081(99,88,77,66,3)*/swift:vararr=1,2,3arr.replaceRange(1.<2,with:99,88,77,66)print(arr)輸出結(jié)果:1,99,88,77,66,3vararr1=1,2,3arr1.replaceRange(R

17、ange(start:0,end:2),with:99,88,77,66)print(arr1)輸出結(jié)果:99,88,77,66,33.2.遍歷OC:NSArray*arr=1,2,3;for(inti=0;i<arr.count;i+)NSLog("%",arri);/*輸出結(jié)果：2016-01-0615:00:10.702OCTest3635:69427312016-01-0615:00:10.703OCTest3635:69427322016-01-0615:00:10.703OCTest3635:6942733*/NSArray*arr=1,2,3;for(NSNumber*numberinarr)NSLog("%",number);/*輸出結(jié)果：2016-01-0615:03:43.192OCTest3684:72308112016-01-0615:03:43.19