java day07 数组的赋值和复制，反转

package helloworld;import java.util.Scanner;/*** * @Description* @author * @date 2020年7月24日上午9:52:54*/
public class HelloWorld {public static void main(String[] args) {int[] array = new int[10];for(int i = 0;i < array.length;i++) {array[i] = (int)(Math.random() *(90 - 10 + 1) + 10);}for(int i = 0;i < array.length;i++) {System.out.print(array[i]+" ");}System.out.println();//1.数组的赋值（就是把堆区地址赋值给一个替身，这个替身的变化会对本身有影响）int[] array1 =  new int[array.length];array1 = array;for(int i = 0;i < array1.length;i++) {System.out.print(array1[i]+" ");}System.out.println();//2.数组的复制(就是复制了一个一模一样的，但是不对本身有影响)int[] array2 = new int[array.length];for(int i = 0;i < array.length;i++) {array2[i] = array[i];}for(int i = 0;i < array2.length;i++) {System.out.print(array2[i]+" ");}System.out.println();//3.数组的反转//3.1方式一for(int i = 0;i < array.length / 2;i++) {int temp = array[i];array[i] = array[array.length - i - 1];array[array.length - i - 1] = temp;}for(int i = 0;i < array.length;i++) {System.out.print(array[i]+" ");}System.out.println();//3.2方式二for(int i = 0,j = array.length - 1;i < j;i++,j--) {int temp = array[i];array[i] = array[j];array[j] = temp;}for(int i = 0;i < array.length;i++) {System.out.print(array[i]+" ");}System.out.println();}
}