Intro to JAVA please see below thank you! --------------------------------------

Question

Intro to JAVA please see below thank you!

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In order to escape from a maze, you first need to find out where you can move from a given location. We represent a maze as a two-dimensional array of characters, where the walls are marked by * characters and corridors by spaces. Given a position in the maze, print out the free neighbors to the north, west, south, and east. Complete the following code:

CODE:

import java.util.Scanner;

/**
   A maze has its walls marked by * characters and corridors
   by spaces.
*/
public class Maze
{
   public static void main(String[] args)
   {
      char[][] maze = makeMaze(
          "***************************** "
         + "** ***                      * "
         + "** *** * ******************** "
         + "** *** *         *          * "
         + "** *** * ***** *   ********** "
         + "**     * ******************** "
         + "****** *************** ****** "
         + "******         ******* ****** "
         + "*      ******* ******* ****** "
         + "* **** ******* **           * "
         + "*    * ******* ******* ****** "
         + "* **** ******* ***     ****** "
         + "************** ************** ");

      Scanner in = new Scanner(System.in);
      System.out.print("Row: ");
      int row = in.nextInt();
      System.out.print("Column: ");
      int col = in.nextInt();
      // Print free neighbors
      if (. . .) // North
      {
         System.out.println(. . . + " " + . . .);
      }
      if (. . .) // West
      {
         System.out.println(. . . + " " + . . .);
      }
      if (. . .) // South
      {
         System.out.println(. . . + " " + . . .);
      }
      if (. . .) // East
      {
         System.out.println(. . . + " " + . . .);
      }
   }

   /**
      Constructs a maze from a string describing its contents.
      @param contents a string consisting of *, spaces, and newlines terminating
      the rows.
   */
   public static char[][] makeMaze(String contents)
   {
      int rows = 0;
      int columns = 0;
      int currentLength = 0;
      for (int i = 0; i < contents.length(); i++)
      {
         if (contents.charAt(i) == ' ')
         {
            columns = Math.max(columns, currentLength);
            currentLength = 0;
            rows++;
         }
         else
         {
            currentLength++;
         }
      }
      char[][] cells = new char[rows][columns];
      int row = 0;
      int column = 0;
      for (int i = 0; i < contents.length(); i++)
      {
         if (contents.charAt(i) == ' ')
         {
            row++;
            column = 0;
         }
         else
         {
            cells[row][column] = contents.charAt(i);
            column++;
         }
      }
      return cells;
   }
}

Explanation / Answer

import java.util.Scanner;
/**
A maze has its walls marked by * characters and corridors
by spaces.
*/
public class Maze
{
public static void main(String[] args)
{
char[][] maze = makeMaze(
"***************************** "
+ "** *** * "
+ "** *** * ******************** "
+ "** *** * * * "
+ "** *** * ***** * ********** "
+ "** * ******************** "
+ "****** *************** ****** "
+ "****** ******* ****** "
+ "* ******* ******* ****** "
+ "* **** ******* ** * "
+ "* * ******* ******* ****** "
+ "* **** ******* *** ****** "
+ "************** ************** ");
Scanner in = new Scanner(System.in);
System.out.print("Row: ");
int row = in.nextInt();
System.out.print("Column: ");
int col = in.nextInt();
// Print free neighbors
  
if (maze[row-1][col]==' ') // North
{
System.out.println( (row-1)+ " " + (col));
}
  
if (maze[row+1][col]==' ') // West
{
System.out.println((row+1)+ " " + (col));
}
if (maze[row][col+1]==' ') // South
{
System.out.println((row)+ " " + (col+1));
}
if (maze[row][col-1]==' ') // East
{
System.out.println((row)+ " " + (col-1));
}
}
/**
Constructs a maze from a string describing its contents.
@param contents a string consisting of *, spaces, and newlines terminating
the rows.
*/
public static char[][] makeMaze(String contents)
{
int rows = 0;
int columns = 0;
int currentLength = 0;
for (int i = 0; i < contents.length(); i++)
{
if (contents.charAt(i) == ' ')
{
columns = Math.max(columns, currentLength);
currentLength = 0;
rows++;
}
else
{
currentLength++;
}
}
char[][] cells = new char[rows][columns];
int row = 0;
int column = 0;
for (int i = 0; i < contents.length(); i++)
{
if (contents.charAt(i) == ' ')
{
row++;
column = 0;
}
else
{
cells[row][column] = contents.charAt(i);
column++;
}
}
return cells;
}
}

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