import java.util.Random;/** * @author mengfanpp * */ public class SuiJiShu { private static int getRandom() { Random random = new Random(); int rValue = Math.abs(random.nextInt()) % 10000; // 保证在0-9999之间 if (rValue < 20) { rValue = Math.abs(random.nextInt()) % 10000; } return rValue; } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub for (int i = 0; i < 1000; i++) { System.out.println(getRandom()); } }}
public class Test { public static void main(String[] args) { for ( int i = 0; i<100; i++ ) { int random = (int)(Math.random()*9999); if ( random > 20 ) System.out.println(random); }
} }
public class Test { public static void main(String[] args) { int random = 20 + (int)(Math.random()*9980); System.out.println(random); } } 这样做就可以了
* @author mengfanpp
*
*/
public class SuiJiShu { private static int getRandom() {
Random random = new Random();
int rValue = Math.abs(random.nextInt()) % 10000; // 保证在0-9999之间
if (rValue < 20) {
rValue = Math.abs(random.nextInt()) % 10000;
}
return rValue; } /**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
for (int i = 0; i < 1000; i++) {
System.out.println(getRandom());
}
}}
{
public static void main(String[] args)
{
for ( int i = 0; i<100; i++ )
{
int random = (int)(Math.random()*9999);
if ( random > 20 )
System.out.println(random);
}
}
}
{
public static void main(String[] args)
{
int random = 20 + (int)(Math.random()*9980);
System.out.println(random);
}
}
这样做就可以了