可变数组NSMutableArray

来源：互联网发布：charles 修改请求数据编辑：程序博客网时间：2024/05/19 02:25

//NSMutableArray创建一个可变数组

//数组中的成员可以修改

//对象取决于定义对象本身的数据结构

//继承与不可变数组,不可变数组中的所有方法可变数组都可以使用

NSMutableArray *mulArray = [[NSMutableArray alloc] initWithObjects:@"one",@"two",@"three",@"four", nil];

NSLog(@"mulArray:%@",mulArray);

//增加对象,在数组的末尾

//(void)addObject:(id)anObject;

[mulArray addObject:@"Five"];

NSLog(@"newArray=%@",mulArray);

//在数组的指定位置添加对象

//(void)insertObject:(id)anObject atIndex:(NSUInteger)index;

[mulArray insertObject:@"qianfeng" atIndex:2];

//删除一个传递的对象

//(void)removeLastObject;

[mulArray removeObject:@"qianfeng"];

NSLog(@"newArray=%@",mulArray);

//传递一个位置删除指定的对象

//(void)removeObjectAtIndex:(NSUInteger)index;

[mulArray removeObjectAtIndex:2];

NSLog(@"newArray=%@",mulArray);

//修改可变数组

//(void)replaceObjectAtIndex:(NSUInteger)index withObject:(id)anObject;

[mulArray replaceObjectAtIndex:1 withObject:@"helloworld"];

NSLog(@"newArray=%@",mulArray);

//在可变数组末尾添加指定数组

//(void)addObjectsFromArray:(NSArray *)otherArray;

NSMutableArray *newArray = @[@"aha",@"hehe"];

[mulArray addObjectsFromArray:newArray];

NSLog(@"newArray=%@",mulArray)

//交换可变数组中指定位置的对象

//(void)exchangeObjectAtIndex:(NSUInteger)idx1 withObjectAtIndex:(NSUInteger)idx2;

[mulArray exchangeObjectAtIndex:1 withObjectAtIndex:3];

NSLog(@"newArray=%@",mulArray);

//删除所有的对象

//(void)removeAllObjects;

[mulArray removeAllObjects];

NSLog(@"newArray=%@",mulArray);

//删除给定范围内传递的对象

//(void)removeObject:(id)anObject inRange:(NSRange)range;

[mulArray removeObject:@"ehe" inRange:NSMakeRange(2, 1)];

NSLog(@"newArray=%@",mulArray);

//删除所有数组中传递的对象

//(void)removeObject:(id)anObject;

[mulArray removeObject:@"hehe"];

NSLog(@"newArray=%@",mulArray);

//删除包含传递数组内相同的元素

//(void)removeObjectsInArray:(NSArray *)otherArray;

NSMutableArray *mul2 = @[@"one",@"two"];

[mulArray removeObjectsInArray:mul2];

NSLog(@"newArray=%@",mulArray);

//(void)replaceObjectsInRange:(NSRange)range withObjectsFromArray:(NSArray *)otherArray range:(NSRange)otherRange;

NSMutableArray *mul3 = @[@"one",@"two"];

NSMutableArray *mul4 = @[@"one",@"two"];

[mul3 replaceObjectsInRange:NSMakeRange(1, 4) withObjectsFromArray:mul4 range:NSMakeRange(1,2)];

//通过另外一个数组来建立数组

//(void)setArray:(NSArray *)otherArray;

//(void)insertObjects:(NSArray *)objects atIndexes:(NSIndexSet *)indexes;

//1是在目的数组中要插入的位置,2是传递插入数据的长度

NSIndexSet *inSet = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(1, 2)];

[mul3 insertObjects:@[@"qian",@"feng"] atIndexes:inSet];

NSLog(@"mul3=%@",mul3);

//在创建mulArray的时候同时设定数组容纳对象的个数,容器大小可以被改变

NSMutableArray *mulArr = [NSMutableArray arrayWithCapacity:20];

//(void)removeObjectsAtIndexes:(NSIndexSet *)indexes;

//(void)replaceObjectsAtIndexes:(NSIndexSet *)indexes withObjects:(NSArray *)objects;ke

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