随机打乱原来的顺序,和洗牌一样
public
class
ShuffleTest {
public
static
void
main(String[] args) {
List<Integer> list =
new
ArrayList<Integer>();
for
(
int
i =
0
; i <
10
; i++)
list.add(
new
Integer(i));
System.out.println(
"打乱前:"
);
System.out.println(list);
for
(
int
i =
0
; i <
5
; i++) {
System.out.println(
"第"
+ i +
"次打乱:"
);
Collections.shuffle(list);
System.out.println(list);
}
}
}