Randomly generated rows and columns in Array

Wed Jan 27, 2010 3:32 am

Randomly generated rows and columns in array:
Im coding a program for a game of chess. The code isn't complete but...I'm having a problem in the constructor. Im trying to to assign Q to an element in the array with a randomly generated row and column and i receive a loss of precision error.....

Code:: public class DancingQueen { public static int BOARD_SIZE = 8; public static char SPACE = ' '; private char [][] board; public DancingQueen() { board = new char [BOARD_SIZE][BOARD_SIZE]; //nested for loop for (int row =0; row< board.length; row++) for(int col =0; col<board.length; col++) { SPACE = board[row][col]; } (ERROR COMES HERE) board(int)[(Math.random()*BOARD_SIZE)](int)[(Math.random()*BOARD_SIZE)] = 'Q' ; int x = (int)'Q'; } public char[][] getBoard() { char[][] temp = new char[board.length][board[0].length]; for(int row = 0; row < board.length; row++) for(int col = 0; col < board[0].length; col++) temp[row][col] = board[row][col]; return temp; } public String move(int fromRow, int fromCol, int toRow, int toCol) { if(fromRow<0 || fromRow>7 || fromCol<0 || fromCol>7){ System.out.println("Invalid from coordinate.");} if(toRow<0 || toRow>7 || toCol<0 || toCol>7){ System.out.println("Invalid to coordinate.");} //moves vertical, horizontal,diagnol //||of fromCol to toCol = || fromRo to toRow } }

Wed Jan 27, 2010 11:14 am

Code:: board(int)[(Math.random()*BOARD_SIZE)](int)[(Math.random()*BOARD_SIZE)] = 'Q' ;

The int casting should be inside brackets :

board[(int)(Math.random()*BOARD_SIZE)][(int)(Math.random()*BOARD_SIZE)] = 'Q' ;

thanks .

Randomly generated rows and columns in Array

Randomly generated rows and columns in Array

Re: java Array.! (help needed for brginner)

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