实验3

import java.util.Arrays;public class Shuzu {   public static void main (String args[ ]) {      int [] a = {1,2,3,4,500,600,700,800};      int [] b,c,d;      System.out.println(Arrays.toString(a));      b = Arrays.copyOf(a,a.length);      System.out.println(Arrays.toString(b));       c = Arrays.copyOf(a, 4);      System.out.println(Arrays.toString(c));       d = Arrays.copyOfRange(a, 4, a.length);      System.out.println(Arrays.toString(d));      c[c.length-1] = -100;       d[d.length-1] = -200;      System.out.println(Arrays.toString(a));   }}