objective c-添加NSMutableArray到另一個NSMutableArray中時數組值

添加NSMutableArray到另一個NSMutableArray中時數組值

  NSMutableArray *no1=[[NSMutableArray alloc]init];
    NSMutableArray *no2=[[NSMutableArray alloc]init];

    for(int i=0;i<3;i++)
    {
        for (int j=0;j<=i;j++)
        {
            NSString *no_str=[NSString stringWithFormat:@"%d",j];
            [no1 addObject:no_str];
        }
        [no2 addObject:no1];
        [no1 removeAllObjects];
    }
    NSLog(@"Final:%@",no2);

實際輸出是：

( ( 0, 1, 2 ), ( 0, 1, 2 ), ( 0, 1, 2 ) )

期望輸出是：

( ( 0 ), ( 0, 1 ), ( 0, 1, 2 ) )

最佳回答：

NSMutableArray *no1;

    NSMutableArray *no2=[[NSMutableArray alloc]init];

    for(int i=0;i<3;i++)
    {
        no1=[[NSMutableArray alloc]init];
        for (int j=0;j<=i;j++)
        {
            NSString *no_str=[NSString stringWithFormat:@"%d",j];
            [no1 addObject:no_str];
        }
        [no2 addObject:no1];
        [no1 release];
    }
    NSLog(@"Final:%@",no2);