Arrays的常用方法

import java.util.Arrays;


/**
 * @author Rory
 * @category Arrays常用方法示例
 */
public class Arrays1 {


public static void main(String[] args) {

int a[]=new int[10];
for (int i = 0; i < a.length; i++) {
a[i]=(int)(Math.random()*200);
}
//正常输出
System.out.println(Arrays.toString(a));
//排序
Arrays.sort(a);
System.out.println(Arrays.toString(a));
//hashCode
System.out.println(Arrays.hashCode(a));
//二分法查找
int i=Arrays.binarySearch(a, 15);
System.out.println("找到了，下标是："+i);
//填充：fill 左闭右开
Arrays.fill(a, 3, 4, 0);
System.out.println(Arrays.toString(a));
Arrays.fill(a, 9);
System.out.println(Arrays.toString(a));


}


}