1 import java.sql.SQLOutput;
2 import java.util.Arrays;
3 import java.util.Scanner;
4 //Arrays类
5 public class test {
6 public static void main(String[] args) {
7 int[] a = {5,4,6,8,9,1,7,2,3} ;
8 //打印数组元素
9 Arrays.toString(a);
10 System.out.println(Arrays.toString(a));
11
12 Arrays.sort(a);//对数组进行升序排序
13 System.out.println(Arrays.toString(a));
14
15 int index = Arrays.binarySearch(a,5);//二分查找
16 System.out.println("index = "+index);
17
18 Arrays.fill(a,2,4,0);//数组的填充(2-4之间的元素被填充)
19 System.out.println(Arrays.toString(a));
20
21 }
22 }