Declare an Array?

[Manuel Diaz]

I want to declare an array like this, but I dont know how to take this into code.

list: array [0..64,0..8]of integer = ((0,0,0,0,0,0,0,0,0),
( 11,18,0,0,0,0,0,0,0), //1
( 12,17,19,0,0,0,0,0,0), //2
( 9,13,18,20,0,0,0,0,0), //3
( 10,14,19,21,0,0,0,0,0), //4
( 11,15,20,22,0,0,0,0,0), //5
( 12,16,21,23,0,0,0,0,0), //6
( 13,22,24,0,0,0,0,0,0), //7
( 14,23,0,0,0,0,0,0,0), //8
( 3,19,26,0,0,0,0,0,0), //9
( 4,20,25,27,0,0,0,0,0), //10
( 1,5,17,21,26,28,0,0,0), //11
( 2,6,18,22,27,29,0,0,0), //12
( 3,7,19,23,28,30,0,0,0), //13
( 4,8,20,24,29,31,0,0,0), //14
( 5,21,30,32,0,0,0,0,0), //15
( 6,22,31,0,0,0,0,0,0), //16
( 2,11,27,34,0,0,0,0,0), //17
( 1,3,12,28,33,35,0,0,0), //18
( 2,4,9,13,25,29,34,36,0), //19
( 3,5,10,14,26,30,35,37,0),//20
( 4,6,11,15,27,31,36,38,0),//21
( 5,7,12,16,28,32,37,39,0),//22
( 6,8,13,29,38,40,0,0,0), //23
( 7,14,30,39,0,0,0,0,0), //24
( 10,19,35,42,0,0,0,0,0), //25
( 9,11,20,36,41,43,0,0,0), //26
( 10,12,17,21,33,37,42,44,0), //27
( 11,13,18,22,34,38,43,45,0), //28
( 12,14,19,23,35,39,44,46,0), //29
( 13,15,20,24,36,40,45,47,0), //30
( 14,16,21,37,46,48,0,0,0), //31
( 15,22,38,47,0,0,0,0,0), //32
( 18,27,43,50,0,0,0,0,0), //33
( 17,19,28,44,49,51,0,0,0), //34
( 18,20,25,29,41,45,50,52,0), //35
( 19,21,26,30,42,46,51,53,0), //36
( 20,22,27,31,43,47,52,54,0), //37
( 21,23,28,32,44,48,53,55,0), //38
( 22,24,29,45,54,56,0,0,0), //39
( 23,30,46,55,0,0,0,0,0), //40
( 26,35,51,58,0,0,0,0,0), //41
( 25,27,36,52,57,59,0,0,0), //42
( 26,28,33,37,49,53,58,60,0), //43
( 27,29,34,38,50,54,59,61,0), //44
( 28,30,35,39,51,55,60,62,0), //45
( 29,31,36,40,52,56,61,63,0), //46
( 30,32,37,53,62,64,0,0,0), //47
( 31,38,54,63,0,0,0,0,0), //48
( 34,43,59,0,0,0,0,0,0), //49
( 33,35,44,60,0,0,0,0,0), //50
( 34,36,41,45,57,61,0,0,0), //51
( 35,37,42,46,58,62,0,0,0), //52
( 36,38,43,47,59,63,0,0,0), //53
( 37,39,44,48,60,64,0,0,0), //54
( 38,40,45,61,0,0,0,0,0), //55
( 39,46,62,0,0,0,0,0,0), //56
( 42,51,0,0,0,0,0,0,0), //57
( 41,43,52,0,0,0,0,0,0), //58
( 42,44,49,53,0,0,0,0,0), //59
( 43,45,50,54,0,0,0,0,0), //60
( 44,46,51,55,0,0,0,0,0), //61
( 45,47,52,56,0,0,0,0,0), //62
( 46,48,53,0,0,0,0,0,0), //63
( 47,54,0,0,0,0,0,0,0)) //64
;

I wonder, how do I do this in java code?.

[Henry Wong]

I would recommend that you start with some reading about Arrays... But if you can't wait, here is a quick example on creating a two dimension int array.

int twoDimArr[][] = { {0, 1, 2} , {4, 5, 6} };

Henry
[ May 05, 2005: Message edited by: Henry Wong ]

[Manuel Diaz]

That's pretty good, but what if I want to use something like this:

list: array [0..64,0..8]of integer.

I want 64 records of array, each one with 8 numbers inside of it. How can I do this?

[Henry Wong]

Originally posted by Manuel Diaz:
I want 64 records of array, each one with 8 numbers inside of it. How can I do this?

There is no syntax difference between a 64 x 8 array, and a 2 x 3 array. You just have more typing to do...

Can't you figure it out from the example? BTW, I really suggest you read the tutorial on arrays.

Henry

[Stan James]

You can declare the array size: Object[64][8] This is meaningful if you make an empty array. But since you are providing values in the declaration it will take the size from the values. I'm pretty sure. Try this for fun and illumination:

String[] strings = new String[2] { "one" };
System.out.println( strings[0] ); // should be "one"
System.out.println( strings[1] ); // null or index out of bounds?

This says the array holds two items but I only provided one value. See if it held the second position with a null or if you get an index out of bounds exception. And let me know.

If you know the answer ... don't tell!

[Henry Wong]

I forgot to mention this yesterday... Did this question bring back memories for anyone else?

I haven't seen Pascal code in a long time. Of course, they call it Delphi now...

Henry

[fred rosenberger]

but your example has 9 elements in each array. And, you have 65 arrays of arrays...

[Manuel Diaz]

Yes I know, but I just presenting an example, I want that in java code. Can someone help me?.

[Ernest Friedman-Hill]

Yes. Change all the parentheses to braces, change the first line to

int twoDimArr[][] =

as Henry showed you, and then you're done. I'm not understanding why this is hard!

[Ernest Friedman-Hill]

OK, now I think I know what the issue is: you want, somehow, the Java array variable's type to include the size of the array -- is that it? In Java, array variables don't include any notion of dimensions. Even if you allocate an array at some fixed size -- i.e.,

int[][] array = new int[64][8];

there's nothing about the variable "array" that includes the notion of 64-ness or 8-ness, and you can later say

array = new int[2][2];

[Manuel Diaz]

OK, and now how do I store all my values on the array, I have this, and the program output an error. Here is what I have.

-----------------------------------------------------------------
int[][] list = new int[5][8];
list [] [] = {0, 0, 0, 0, 0, 0, 0, 0, 0,
11, 18, 0, 0, 0, 0, 0, 0, 0, //1
12, 17, 19, 0, 0, 0, 0, 0, 0, //2
9, 13, 18, 20, 0, 0, 0, 0, 0, //3
10, 14, 19, 21, 0, 0, 0, 0, 0, //4
11, 15, 20, 22, 0, 0, 0, 0, 0, //5
------------------------------------------------------------------

[Ernest Friedman-Hill]

int[][] list = 
  {{0, 0, 0, 0, 0, 0, 0, 0, 0,}
   {11, 18, 0, 0, 0, 0, 0, 0, 0,}, //1
   {2, 3, 4, 5, 6, 7, 7, 8,}, //2 
   ...
   };

[Manuel Diaz]

Im getting an error on the brakets!!!. What can I do?

[M Beck]

well, one thing you can do is show us the error. that would make it easier to help you solve it.

[Manuel Diaz]

I have troubles with all the values, but.. when I only input one, no error. For example this is what I have:

int[][] list ={{0, 0, 0, 0, 0, 0, 0, 0, 0,}};


if I try to make this I have an error:
int[][] list = {{0, 0, 0, 0, 0, 0, 0, 0, 0,}{11, 18, 0, 0, 0, 0, 0, 0, 0
};

WHY IS THIS HAPPENING TO ME??.

[Manuel Diaz]

OH don't worry, I already found the error, thanks you all for your support.