package qinglin.learn.arithmetic;
import java.awt.*;
import javax.swing.*;
public class Pascal extends JFrame
{
/**
*
*/
private static final long serialVersionUID = 1L;
@SuppressWarnings("deprecation")
public Pascal()
{
setBackground(Color.white);
setTitle("巴斯卡三角形");
setSize(520, 350);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
show();
}
private long combi(int n, int r)
{
int i;
long p = 1;
for (i = 1; i <= r; i++)
p = p * (n - i + 1) / i;
return p;
}
public void paint(Graphics g)
{
final int N = 12;
int n, r;
for (n = 0; n <= N; n++)
{
for (r = 0; r <= n; r++)
{
int x=(N - n) * 20 + r * 40;
int y=n * 20 + 50;
g.drawString(" " + combi(n, r), x,y);
}
}
}
public static void main(String args[])
{
@SuppressWarnings("unused")
Pascal frm = new Pascal();
}
}
巴斯卡三角形
最新推荐文章于 2023-10-09 02:31:42 发布