how to define 2x2 array in ios?

how to define 2x2 or 3X.. array in ios? like this

[name=john , age=21 , num=1]
[name=max , age=25 , num=2]
[name=petter , age=22 , num=3]

with columns in NSMutableArray you can only add rows with objects; i w开发者_如何学Cant this array[][]

Looking at your example, I wouldn't do it with arrays, or not just arrays. I'd have an array of dictionaries or an array of custom objects with the properties name, age and num. With dictionaries:

NSArray* theArray = [NSArray arrayWithObjects:
    [NSDictionary dictionaryWithObjectsAndKeys:
        @"john", @"name",
        [NSNumber numberWithInt: 21], @"age",
        [NSNumber numberWithInt: 1], @"num",
        nil],
    [NSDictionary dictionaryWithObjectsAndKeys:
        @"max", @"name",
        [NSNumber numberWithInt: 25], @"age",
        [NSNumber numberWithInt: 2], @"num",
        nil],
    [NSDictionary dictionaryWithObjectsAndKeys:
        @"petter", @"name",
        [NSNumber numberWithInt: 22], @"age",
        [NSNumber numberWithInt: 3], @"num",
        nil],
    nil];

How to declare a two dimensional array of string type in Objective-C? might give you an idea

So many ways ...

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

NSMutableDictionary *person = [[[NSMutableDictionary alloc] init] autorelease];
[person setObject:@"john" forKey:@"name"];
[person setObject:[NSNumber numberWithInt:21] forKey:@"age"];
...

[array addObject:person];

... or create your custom class, which does hold all person data, or struct, or ... Depends on your goal.

It looks like you should be create a proper data storage class to store this in, rather than a dictionary or something like that.

e.g.

    @interface Person : NSObject {

    }

    @property (nonatomic, copy) NSString* Name;
    @property  int age;
    @property  int num;

    @end

Then create your person instances and store them in an array. You may wich to create some connivence methods first. e.g.

[[NSArray arrayWithObjects:[Person personWithName:@"Bob",Age:1 Num:3],
                             [Person personWithName:@"Bob",Age:1 Num:3],
                              [Person personWithName:@"Bob",Age:1 Num:3],nil];

Its much clearer.