该程序反转数组。例如，如果用户输入数组元素为1,2,3,4,5，那么程序将反转数组，数组元素将为5,4,3,2,1。
示例：反转数组
import java.util.Scanner;public class Example{ public static void main(String args[]) { int counter, i=0, j=0, temp; int number[] = new int[100]; Scanner scanner = new Scanner(System.in); System.out.print("How many elements you want to enter: "); counter = scanner.nextInt(); /* This loop stores all the elements that we enter in an * the array number. First element is at number[0], second at * number[1] and so on */ for(i=0; i<counter; i++) { System.out.print("Enter Array Element"+(i+1)+": "); number[i] = scanner.nextInt(); } /* Here we are writing the logic to swap first element with * last element, second last element with second element and * so on. On the first iteration of while loop i is the index * of first element and j is the index of last. On the second * iteration i is the index of second and j is the index of * second last. */ j = i - 1; i = 0; scanner.close(); while(i<j) { temp = number[i]; number[i] = number[j]; number[j] = temp; i++; j--; } System.out.print("Reversed array: "); for(i=0; i<counter; i++) { System.out.print(number[i]+ " "); } }}
输出：
How many elements you want to enter: 5Enter Array Element1: 11Enter Array Element2: 22Enter Array Element3: 33Enter Array Element4: 44Enter Array Element5: 55Reversed array: 55 44 33 22 11
