33 lines
991 B
Java
33 lines
991 B
Java
|
import java.util.List;
|
||
|
|
import java.util.ArrayList;
|
||
|
|
import java.util.Collections;
|
||
|
|
|
||
|
|
class Test03 {
|
||
|
|
|
||
|
|
/**
|
||
|
|
* 产生[min, max)范围的随机整数
|
||
|
|
*/
|
||
|
|
public static int randomInt(int min, int max) {
|
||
|
|
return (int) (Math.random() * (max - min) + min);
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void main(String[] args) {
|
||
|
|
List<Integer> redBalls = new ArrayList<>();
|
||
|
|
for (int i = 1; i <= 33; ++i) {
|
||
|
|
redBalls.add(i);
|
||
|
|
}
|
||
|
|
List<Integer> selectedBalls = new ArrayList<>();
|
||
|
|
for (int i = 0; i < 6; ++i) {
|
||
|
|
selectedBalls.add(redBalls.remove(randomInt(0, redBalls.size())));
|
||
|
|
}
|
||
|
|
Collections.sort(selectedBalls);
|
||
|
|
selectedBalls.add(randomInt(1, 17));
|
||
|
|
for (int i = 0; i < selectedBalls.size(); ++i) {
|
||
|
|
System.out.printf("%02d ", selectedBalls.get(i));
|
||
|
|
if (i == selectedBalls.size() - 2) {
|
||
|
|
System.out.print("| ");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
System.out.println();
|
||
|
|
}
|
||
|
|
}
|