动手动脑二

在范围0~1000中生成20个随机数

package 随机数;
public class suiji {
private static final int N = 20;//生成随机数的个数
private static final int LEFT = 0;//生成随机数的左范围
private static final int RIGHT = 1000;//生成随机数的右范围
private static long x0 = 1L;
private long a = 1234567890L;
private long c = 12345L;
private long m = 2345678912L;
// 产生随机数
private long rand ( long r )
{
// a,c,m为常数
r = ( r * a + c ) % m;//Xn+1=(aXn + c)mod m
return r;
}
private long little ( int L, int R, long rand ){
return L + rand % ( R - L + 1 );
}
int jishu=1;
private void recursion ( int count, long rand ){
if (count >= N) {
return;
}
rand = rand (rand);
long r = little (LEFT, RIGHT, rand);
System.out.print (r + " ");
recursion (++count, rand);
}
public static void main(String[] args) {
suiji a = new suiji ();
a.recursion (0, x0);
}
}