Array, method to change character places

[aramiky818]

hey guys,
so i came up with this 2d array which prints

Generation Zero

X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X
X X X X X X X X X X X X
X X X X X X X X X X X

now what i want to do is create a method that goes in the array and replaces the X with an empty space ' ' and fills up the empty space with the letter X, so basically do the opposite of what i have.

here is the code i got so far:

public class SecondArray2D
{
public static void main(String[]args)
{


char [][] array = {

{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' '},
{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},
{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '},

};

System.out.println(" Generation Zero");
for (int n=0; n< array.length; n++)
{
System.out.println(array[n]);
}


}




}

[Fubarable]

What is your current question as I don't see one in your post above?

[aramiky818]

if you notice what the program prints is something like so,

Generation Zero
x x x x x x
x x x x x
x x x x x x

im looking for a method or someway tht i could replace all characters in the array with an empty space and and fill all empty spaces with a character.

so if
if Generation zero looks like above,
i would like Genration one to look like this
x x x
x x x x

the exact oposit,

of this

{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},

[Fubarable]

if you notice what the program prints is something like so,

   Generation Zero
    x  x  x  x  x  x 
      x  x  x  x  x
   x   x  x  x   x  x

im looking for a method or someway tht i could replace all characters in the array with an empty space and and fill all empty spaces with a character.

so if
if Generation zero looks like above,
i would like Genration one to look like this

      x  x  x  
     x  x  x  x

the exact oposit,

of this

{' ',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ','X',' ',' '},

OK, so what have you tried so far, or what ideas do you have for this?

[aramiky818]

nothing, im lost. i got stuck and i donno how to get started on next step, which is what i just explained

[Fubarable]

Well, you need to step through the arrays, and what's the best tool for iterating through an array?

[Fubarable]

For instance, say you have an array of int and you want to add all the ints up, what would you use to do this?