零声CC++Linux服务器开发高级架构师
在数组中查找并返回下标
public static void main(String[] args) {
//Arrays 应用类 在数组中查找 并返回下标
int arr1[] = new int[]{56,12,15,46,84,75,56};
Arrays.sort(arr1);
System.out.println(Arrays.binarySearch(arr1,12));
System.out.println(Arrays.binarySearch(arr1,15));
System.out.println(Arrays.binarySearch(arr1,50));
System.out.println(Arrays.binarySearch(arr1,60));
}
4.6.6以数组形式输出数组
import java.util.Arrays;public class Example09 {
public static void main(String[] args) {
int score[] = new int[]{67,78,65,88,79};
System.out.println(Arrays.toString(score));
}}