Java实现数组反转翻转的方法实例

import java.util.ArrayList;import java.util.Collections; 
public class Main { 
  public static void main(String[] args) { 
   ArrayList arrayList = new ArrayList(); 
   arrayList.add("A"); 
   arrayList.add("B"); 
   arrayList.add("C"); 
   arrayList.add("D"); 
   arrayList.add("E"); 
   System.out.println("反转前排序: " + arrayList); 
   Collections.reverse(arrayList); 
   System.out.println("反转后排序: " + arrayList); 
  } 
} 

package javatest2; 
 
import java.util.ArrayList; 
 
public class JavaTest2 { 
 
  public static void main(String[] args) { 
    String[] Array = { "a", "b", "c", "d", "e" }; 
    reverseArray1(Array);// 使用集合ArrayList实现反转 
    for (int j = 0; j < Array.length; j++) { 
      System.out.print(Array[j] + " "); 
    } 
 
    System.out.print("\n"); 
    String[] temp = reverseArray2(Array);// 直接使用数组实现反转 
    for (int j = 0; j < temp.length; j++) { 
      System.out.print(Array[j] + " "); 
    } 
 
  } 
 
  /* 
   * 函数：reverseArray1和reverseArray2 
   * 功能：实现 数组翻转 
   * 例如：{'a','b','c','d'}变成{'d','c','b','a'} 
   */ 
  private static void reverseArray1(String[] Array) { 
    ArrayList<String> array_list = new ArrayList<String>(); 
    for (int i = 0; i < Array.length; i++) { 
      array_list.add(Array[Array.length - i - 1]); 
    } 
    Array = array_list.toArray(Array); 
  } 
 
  private static String[] reverseArray2(String[] Array) { 
    String[] new_array = new String[Array.length]; 
    for (int i = 0; i < Array.length; i++) { 
      // 反转后数组的第一个元素等于源数组的最后一个元素： 
      new_array[i] = Array[Array.length - i - 1]; 
    } 
    return new_array; 
  } 
 
}