How to create a java class with a static cage method that puts X in a prison lattice form?

Question

This is for my homework: how to create a public cage method (char [] [] arr) that returns char [] []. The method should place Xs along the boundaries of the grid represented by a two-dimensional array. In addition, it should place the “columns” along the columns of the array, skipping one column for each bar. For example, if arr has 8 columns, the returned array looks like this:

XXXXXXX XXXX XXXX XXXXXXX 

my other form was this: Create an ArrayArt Java class with static methods as follows: a public method called frame (char [] [] arr) that returns char [] []. The method should put Xs along the boundaries of the grid represented by the two-dimensional array, and then should return this array. For example, if arr has 4 columns and 4 rows, the resulting array should be:

  ----jGRASP exec: java ArrayArt XXXX XX XX XXXX ----jGRASP: operation complete. 

The source code for printing the frame is as follows:

  public class ArrayArt{ public static void main(String[] args){ printArray(frame(4,4)); } // frame printing public static char[][] frame(int n, int m ){ char[][] x=new char[n][m]; for(int row=0;row<x.length;row++) for(int col=0;col<x[row].length;col++) if( row == 0 || row == n-1 || row == col+row || row == (row+col)-(m-1) ) x[row][col]= 'X'; else x[row][col]= ' '; return x; } //printArray public static void printArray(char[][] arr){ for(int row=0;row<arr.length;row++){ for (int col=0;col<arr[row].length;col++) System.out.print(" "+arr[row][col]); System.out.println(); } } } 

Answer 1

Just add this code after the else condition:

 for(int i=1;i<x[row].length;i++)if(col == i*2)x[row][col]= 'X'; 

Here to do it! Good luck