第七章第十二题（倒置数组）（Inverted array）

• *7.12（倒置数组）7.7节中的reverse方法通过把数组复制到新数组中实现数组的倒置。改写该方法 ，将参数中传递的数组倒置，并返回该数组，编写一个测试程序，提示用户输入是个数字，调用这个方法倒置这些数字，然后显示他们。
  *7.12（Inverted array）The reverse method in section 7.7 achieves array inversion by copying the array into a new array. Rewrite the method, invert the array passed in the parameter, return the array, write a test program, prompt the user to input a number, call this method to invert these numbers, and then display them.

• 参考代码：

  package chapter07;import java.util.Scanner;public class Code_12 {public static void main(String[] args) {double[] array = new double[10];Scanner input = new Scanner(System.in);System.out.print("Enter 10 numbers: ");for (int i = 0;i < 10;i++)array[i] = input.nextDouble();reverse(array);for (int i = 0;i < 10;i++)System.out.print(array[i] + " ");}public static double[] reverse(double[] array){double temp;for (int i = 0;i < array.length / 2;i++){temp = array[i];array[i] = array[array.length - 1 - i];array[array.length - 1 - i] = temp;}return array;}
  }

• 结果显示：

  Enter 10 numbers: 3 4 5 6 7 8 9 0 1 2
  2.0 1.0 0.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 
  Process finished with exit code 0