java Arrays类

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

}