JAVA问题总结之23-生成一个长度为100的随机整数list
目录
JAVA问题总结之23–生成一个长度为100的随机整数list
JAVA问题总结之23–生成一个长度为100的随机整数list
package java9221;
import java.util.ArrayList;
import java.util.List;
public class testlist {
public static void main(String[] args) {
// TODO Auto-generated method stub
int j;
int n=100;
List list=new ArrayList();
for(int i=1;i<=n;i++){
j= (int) (Math.random()*20);
list.add(j);
System.out.println(list.get(i-1));
}
System.out.println(list.subList(0, 99));
System.out.println(list.size());
}
}结果：
12
13
5
13
9
15
10
13
3
3
19
5
14
14
8
15
0
6
12
7
16
18
10
12
16
0
1
7
7
1
0
2
5
8
0
18
12
13
9
16
3
0
19
6
5
9
12
3
3
12
6
3
8
11
7
15
12
12
7
16
8
0
5
3
2
19
10
15
8
18
3
5
19
18
7
17
0
17
15
3
3
19
13
0
11
1
9
14
1
13
7
0
7
11
15
5
7
10
13
17
[12, 13, 5, 13, 9, 15, 10, 13, 3, 3, 19, 5, 14, 14, 8, 15, 0, 6, 12, 7, 16, 18, 10, 12, 16, 0, 1, 7, 7, 1, 0, 2, 5, 8, 0, 18, 12, 13, 9, 16, 3, 0, 19, 6, 5, 9, 12, 3, 3, 12, 6, 3, 8, 11, 7, 15, 12, 12, 7, 16, 8, 0, 5, 3, 2, 19, 10, 15, 8, 18, 3, 5, 19, 18, 7, 17, 0, 17, 15, 3, 3, 19, 13, 0, 11, 1, 9, 14, 1, 13, 7, 0, 7, 11, 15, 5, 7, 10, 13]
100