轻松创建一百万个具有唯一名称的NSMutableArrays

Question

After teaching myself (mostly from this website) I have finally been unable to find a solution to a problem.
I am trying to easily create 1 million NSMutableArrays with unique names. What I mean by easily is not having 'hard code' all of the individual arrays.
What I would like to do is something like this:

for (int i = 1; i <= 1000000; i++) {  
    NSString *arrayNumber = [NSString stringWithFormat:@"%d", i];  
    NSString *millionArrayNumber = @"millionArrayNumber";  
    NSString *arrayName = [millionArrayNumber stringByAppendingString:arrayNumber];  
    NSMutableArray *[NSString arrayName] = [NSMutableArray array];  
}  

I can understand why this doesn't work but I can't think of another way of doing it. I thought it might be possible to use something similar to:

[button setTag = 1];

If I change the code to:

for (int i = 1; i <= 1000000; i++) {    
    NSMutableArray *millionArray = [NSMutableArray array];  
    [millionArray setTag: i];
}

I would then use the tag to control the arrays as you can do with buttons. This doesn't work for arrays though.
I hope I haven't been ambiguous.

Answer 1

I'm not sure how to convert a string into literal code like you're doing, but I think it's possible.

However, you can always just kick 1 million arrays to an NSMutableDictionary and give each one your unique key name.

NSMutableDictionary *arrayStore = [NSMutableDictionary dictionary];
for (int i = 1; i <= 1000000; i++) {  
    NSString *arrayNumber = [NSString stringWithFormat:@"%d", i];  
    NSString *millionArrayNumber = @"millionArrayNumber";  
    NSString *arrayName = [millionArrayNumber stringByAppendingString:arrayNumber];  
    arrayStore[arrayName] = [NSMutableArray array];  
}

And obviously to get whatever array you want later, you just use:

NSMutableArray *uniqueArray = arrayStore[arrayName];

Edit: Not sure if you want to keep the number as the unique key as mentioned in the comment below but if so, you can do it with this:

NSMutableDictionary *arrayStore = [NSMutableDictionary dictionary];
for (int i = 1; i <= 1000000; i++) { 
   arrayStore[@(i)] = [NSMutableArray array];  
}

And access it with (for example, array number 100):

NSMutableArray *uniqueArray = arrayStore[@100];