Thread: Randomizing cells in a grid

Hello all, happy holidays!

I am here to seek some assistance in solving a homework problem. I know the code will not be written for me, I am just looking for a guiding hand. What my problem involves is designing a java applet that resembles minesweeper. I have made a 10x10 grid for the playing field. What I need to do is randomize the cells so that twenty of them are "mines" and the rest are "duds". I'm feeling very lost at the moment and any tips that would send me in the right direction would be great.



Thanks
Flowbs

The Random class provides the capability for pseudo-random values. Can be used to randomize in a grid by getting 2 random values between 1 and 10 (or 0 and 9 for an array) to randomize a piece.

Thanks, guys. Also, I'm having a bit of a problem trying to set out my initial layout again. I had the 10x10 grid set up, but I also needed to add three labels/buttons on top of the grid, and it's throwing me off a little bit.

import java.awt.*; import javax.swing.*; import java.awt.event.*;   public class Ex3_1 extends JApplet { int numButtons; String s; private JButton b = new JButton("start over"); private JLabel l1 = new JLabel("attempts: "); private JLabel l2 = new JLabel("found: "); private JPanel p1, p2; private GridLayout grid1; private Container pane;   public void init() { Container pane = getContentPane(); pane.setLayout(new GridLayout(1, 1, 0, 5));   JPanel top = new JPanel(); top.setLayout(new FlowLayout()); top.add(l1); top.add(l2); top.add(b);   JPanel bottom = new JPanel(); bottom.setLayout(new FlowLayout()); s = getParameter("NUMBUTTONS"); numButtons = Integer.valueOf(s).intValue(); grid1 = new GridLayout(10, 10); for (int i=1; i<=numButtons; i++ ) bottom.add(new Button("") );       pane.add(top); pane.add(bottom); } }

With this code, I have the three buttons on the left and a distorted grid on the right side of the panel. I think trying to put the grid on a panel is throwing it all off, am I going about this all wrong?