java Arrays类

 1 import java.util.*; 
 2 public class BigIntDemo {
 3     public static void main(String[] args) {
 4         int t[]={3,5,6,7,34,23,2};
 5         Arrays.sort(t);//数组排序
 6         System.out.print("排序后的数组");
 7         System.out.println(Arrays.toString(t));
 8         int point=Arrays.binarySearch(t, 23);//检索数据位置
 9         System.out.println("元素’23‘的位置在: "+point);
10         Arrays.fill(t, 3);//填充数组
11         System.out.print("数组填充:");
12         System.out.println(Arrays.toString(t));//以字符串形式输出
13     }
14 
15 }