Can somebody convert this JAVA code to PHP?

engotpacs · #1 24-Jul-2008, 21:57

hey... can anyone of you here knows how to convert this java source code to php? I really need it....

and oh...

does anyone of you here have a source code on "knight's tour"???
it is where the knight in a chessboard tours around the chessboard without
repeating its steps...
if you'd be so kind... please email me the source code...
i need it in class...

engotpacs@gmail.com

JAVA Code:

import java.awt.*;//for class Point

public class AccessibilityMatrix
{
	static int iCells[][];

	public static void init()
	{
		iCells = new int[8][8];

		iCells[0][0] = 2;
		iCells[0][1] = 3;
		iCells[0][2] = 4;
		iCells[0][3] = 4;
		iCells[0][4] = 4;
		iCells[0][5] = 4;
		iCells[0][6] = 3;
		iCells[0][7] = 2;

		iCells[1][0] = 3;
		iCells[1][1] = 4;
		iCells[1][2] = 6;
		iCells[1][3] = 6;
		iCells[1][4] = 6;
		iCells[1][5] = 6;
		iCells[1][6] = 4;
		iCells[1][7] = 3;

		iCells[2][0] = 4;
		iCells[2][1] = 6;
		iCells[2][2] = 8;
		iCells[2][3] = 8;
		iCells[2][4] = 8;
		iCells[2][5] = 8;
		iCells[2][6] = 6;
		iCells[2][7] = 4;

		iCells[3][0] = 4;
		iCells[3][1] = 6;
		iCells[3][2] = 8;
		iCells[3][3] = 8;
		iCells[3][4] = 8;
		iCells[3][5] = 8;
		iCells[3][6] = 6;
		iCells[3][7] = 4;

		iCells[4][0] = 4;
		iCells[4][1] = 6;
		iCells[4][2] = 8;
		iCells[4][3] = 8;
		iCells[4][4] = 8;
		iCells[4][5] = 8;
		iCells[4][6] = 6;
		iCells[4][7] = 4;

		iCells[5][0] = 4;
		iCells[5][1] = 6;
		iCells[5][2] = 8;
		iCells[5][3] = 8;
		iCells[5][4] = 8;
		iCells[5][5] = 8;
		iCells[5][6] = 6;
		iCells[5][7] = 4;

		iCells[6][0] = 3;
		iCells[6][1] = 4;
		iCells[6][2] = 6;
		iCells[6][3] = 6;
		iCells[6][4] = 6;
		iCells[6][5] = 6;
		iCells[6][6] = 4;
		iCells[6][7] = 3;

		iCells[7][0] = 2;
		iCells[7][1] = 3;
		iCells[7][2] = 4;
		iCells[7][3] = 4;
		iCells[7][4] = 4;
		iCells[7][5] = 4;
		iCells[7][6] = 3;
		iCells[7][7] = 2;
	}

	public static int getAccessibility( Point ptPos )
	{
		return iCells[ptPos.x][ptPos.y];
	}

	public static int getAptMove( int[] iMoves, Point ptPos )
	{
		int iAptMove;
		int i;
		int iCurrentAccessibility;
		Point ptTemp = new Point( ptPos );

		iAptMove = iMoves[0];
		ptTemp.x += KnightMoves.iHorizontalMove[ iMoves[0] ];
		ptTemp.y += KnightMoves.iVerticalMove[ iMoves[0] ];
		iCurrentAccessibility = getAccessibility( ptTemp );

		for( i = 1 ; ( i < 8 ) && ( iMoves[i] != -1 ) ; ++i )
		{
			ptTemp = new Point( ptPos );
			ptTemp.x += KnightMoves.iHorizontalMove[ iMoves[i] ];
			ptTemp.y += KnightMoves.iVerticalMove[ iMoves[i] ];
			int iNewAccessibility = getAccessibility( ptTemp );

			if( iNewAccessibility < iCurrentAccessibility )
			{
				iCurrentAccessibility = iNewAccessibility;
				iAptMove = iMoves[i];
			}
			else if( iNewAccessibility == iCurrentAccessibility )
			{
				int iNewAcc = getLeastAccessibility( ptTemp );
				
				ptTemp = new Point( ptPos );
				ptTemp.x += KnightMoves.iHorizontalMove[ iAptMove ];
				ptTemp.y += KnightMoves.iVerticalMove[ iAptMove ];
				
				int iOldAcc = getLeastAccessibility( ptTemp );
				
				if( iNewAcc < iOldAcc )
				{
					iCurrentAccessibility = iNewAccessibility;
					iAptMove = iMoves[i];
				}
			}
		}

		return iAptMove;
	}
	
	private static int getLeastAccessibility( Point ptPos )
	{
		int iAccessibilities[] = getAccessibilities( ptPos );
		int iLeastAccessibility;
		int iCurrentAccessibility, i;
		
		iLeastAccessibility = iAccessibilities[0];
		
		for( i = 1 ; (i < iAccessibilities.length) ; ++i )
		{
			iCurrentAccessibility = iAccessibilities[i];
			
			if( iCurrentAccessibility < iLeastAccessibility )
				iLeastAccessibility = iCurrentAccessibility;
		}
		
		return iLeastAccessibility;
	}
	
	private static int[] getAccessibilities( Point ptPos )
	{
		int iMoves[] = KnightMoves.enumerateMoves( ptPos );
		int iAccessibilities[] = new int[8];
		
		for( int i = 0 ; (i < iAccessibilities.length) && 
						(iMoves[i] != -1) ; ++i )
		{
			Point ptTemp = new Point( ptPos );
			ptTemp.x += KnightMoves.iHorizontalMove[ iMoves[i] ];
			ptTemp.y += KnightMoves.iVerticalMove[ iMoves[i] ];
			
			iAccessibilities[i] = getAccessibility( ptTemp );
		}
		
		return iAccessibilities;
	}
}

and one more thing...

iHorizontalMove = new int[8];

how do you create an integer array in php?

engotpacs · #2 24-Jul-2008, 21:58

correction.... its "knight's tour" source code on php format...

TurboPT · #3 27-Jul-2008, 19:52

Quote:

Originally Posted by engotpacs

hey... can anyone of you here knows how to convert this java source code to php? I really need it....
if you'd be so kind... please email me the source code...
i need it in class...

I think I can claim that many posters here won't do other people's homework. (although there are a stray few that will, but it is usually dependent on how much effort you've done yourself)

However, that being said, we CAN assist in helping with the conversion for specific points (or areas) that are giving the most trouble, OR if that isn't good enough, there is an nifty website here that can potentially do everything for you completely.

Quote:

Originally Posted by engotpacs

iHorizontalMove = new int[8];

how do you create an integer array in php?

Based on the Java code that you posted, that would NOT be difficult to convert into PHP form.

Know that PHP does not require an explicit type for variable(s), as PHP assigns the type based on the value assigned, so a basic int array in PHP could look something like this:

PHP Code:


$iHorizontalMove = array( 2, 3, 4, 4, 4, 4, 3, 4 );

More about PHP's arrays can be found here.
More about PHP's type handling can be found here.

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Can somebody convert this JAVA code to PHP?

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Re: Can somebody convert this JAVA code to PHP?