OC 数组 

  1 /*---------------------------创建数组------------------------------*/
  2 //NSArray *array = [[NSArray alloc] initWithObjects:
  3 @"One",@"Two",@"Three",@"Four",nil];
  4 
  5 self.dataArray = array;
  6 [array release];
  7 
  8 //- (unsigned) Count;数组所包含对象个数；
  9 NSLog(@"self.dataArray cound:%d",[self.dataArray count]);
 10 
 11 //- (id) objectAtIndex: (unsigned int) index;获取指定索引处的对象;
 12 NSLog(@"self.dataArray cound 2:%@",[self.dataArray objectAtIndex:2]);
 13 
 14 /*--------------------------从一个数组拷贝数据到另一数组(可变数级)----------------------------*/
 15 
 16 //arrayWithArray:
 17 //NSArray *array1 = [[NSArray alloc] init];
 18 NSMutableArray *MutableArray = [[NSMutableArray alloc] init];
 19 NSArray *array = [NSArray arrayWithObjects:
 20 @"a",@"b",@"c",nil];
 21 NSLog(@"array:%@",array);
 22 MutableArray = [NSMutableArray arrayWithArray:array];
 23 NSLog(@"MutableArray:%@",MutableArray);
 24 
 25 array1 = [NSArray arrayWithArray:array];
 26 NSLog(@"array1:%@",array1);
 27 
 28 //Copy
 29 
 30 //id obj;
 31 NSMutableArray *newArray = [[NSMutableArray alloc] init];
 32 NSArray *oldArray = [NSArray arrayWithObjects:
 33 @"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
 34 
 35 NSLog(@"oldArray:%@",oldArray);
 36 for(int i = 0; i < [oldArray count]; i++)
 37 {
 38 obj = [[oldArray objectAtIndex:i] copy];
 39 [newArray addObject: obj];
 40 }
 41 //
 42 NSLog(@"newArray:%@", newArray);
 43 [newArray release];
 44 
 45 //快速枚举
 46 
 47 //NSMutableArray *newArray = [[NSMutableArray alloc] init];
 48 NSArray *oldArray = [NSArray arrayWithObjects:
 49 @"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
 50 NSLog(@"oldArray:%@",oldArray);
 51 
 52 for(id obj in oldArray)
 53 {
 54 [newArray addObject: obj];
 55 }
 56 //
 57 NSLog(@"newArray:%@", newArray);
 58 [newArray release];
 59 
 60 //Deep copy
 61 
 62 //NSMutableArray *newArray = [[NSMutableArray alloc] init];
 63 NSArray *oldArray = [NSArray arrayWithObjects:
 64 @"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",nil];
 65 NSLog(@"oldArray:%@",oldArray);
 66 newArray = (NSMutableArray*)CFPropertyListCreateDeepCopy(kCFAllocatorDefault, (CFPropertyListRef)oldArray, kCFPropertyListMutableContainers);
 67 NSLog(@"newArray:%@", newArray);
 68 [newArray release];
 69 
 70 //Copy and sort
 71 
 72 //NSMutableArray *newArray = [[NSMutableArray alloc] init];
 73 NSArray *oldArray = [NSArray arrayWithObjects:
 74 @"b",@"a",@"e",@"d",@"c",@"f",@"h",@"g",nil];
 75 NSLog(@"oldArray:%@",oldArray);
 76 NSEnumerator *enumerator;
 77 enumerator = [oldArray objectEnumerator];
 78 id obj;
 79 while(obj = [enumerator nextObject])
 80 {
 81 [newArray addObject: obj];
 82 }
 83 [newArray sortUsingSelector:@selector(compare:)];
 84 NSLog(@"newArray:%@", newArray);
 85 [newArray release];
 86 
 87 /*---------------------------切分数组------------------------------*/
 88 
 89 //从字符串分割到数组－ componentsSeparatedByString:
 90 NSString *string = [[NSString alloc] initWithString:@"One,Two,Three,Four"];
 91 NSLog(@"string:%@",string);
 92 NSArray *array = [string componentsSeparatedByString:@","];
 93 NSLog(@"array:%@",array);
 94 [string release];
 95 
 96 //从数组合并元素到字符串- componentsJoinedByString:
 97 NSArray *array = [[NSArray alloc] initWithObjects:@"One",@"Two",@"Three",@"Four",nil];
 98 NSString *string = [array componentsJoinedByString:@","];
 99 NSLog(@"string:%@",string);
100 
101 /*******************************************************************************************
102 NSMutableArray
103 /*---------------给数组分配容量----------------*/
104 //NSArray *array;
105 array = [NSMutableArray arrayWithCapacity:20];
106 
107 /*--------------在数组末尾添加对象----------------*/
108 //- (void) addObject: (id) anObject;
109 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
110 @"One",@"Two",@"Three",nil];
111 [array addObject:@"Four"];
112 NSLog(@"array:%@",array);
113 
114 /*--------------删除数组中指定索引处对象----------------*/
115 //-(void) removeObjectAtIndex: (unsigned) index;
116 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
117 @"One",@"Two",@"Three",nil];
118 [array removeObjectAtIndex:1];
119 NSLog(@"array:%@",array);
120 
121 /*-------------数组枚举---------------*/
122 //- (NSEnumerator *)objectEnumerator;从前向后
123 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
124 @"One",@"Two",@"Three",nil];
125 NSEnumerator *enumerator;
126 enumerator = [array objectEnumerator];
127 
128 id thingie;
129 while (thingie = [enumerator nextObject]) {
130 NSLog(@"thingie:%@",thingie);
131 }
132 
133 //- (NSEnumerator *)reverseObjectEnumerator;从后向前
134 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
135 @"One",@"Two",@"Three",nil];
136 NSEnumerator *enumerator;
137 enumerator = [array reverseObjectEnumerator];
138 
139 id object;
140 while (object = [enumerator nextObject]) {
141 NSLog(@"object:%@",object);
142 }
143 
144 //快速枚举
145 //NSMutableArray *array = [NSMutableArray arrayWithObjects:
146 @"One",@"Two",@"Three",nil];
147 for(NSString *string in array)
148 {
149 NSLog(@"string:%@",string);
150 }

 

posted @ 2016-01-08 11:09  御剑青冥  阅读(183)  评论(0)    收藏  举报