字符串倒序输出的两种方法

题目：将字符串abcdefg倒序输出

方法一：利用String类的toCharArray()，再倒序输出数组。

 1 public class javatest {
 2     public static void main(String[] args) {
 3         String originalString = "abcdefg";
 4         String resultString = "";
 5         char[] charArray = originalString.toCharArray();
 6         for (int i = charArray.length-1; i>=0; i--){
 7                 resultString +=charArray[i];
 8             }
 9         System.out.println(resultString);
10     }
11 }
 

  方法二：如果使用reverse()方法
1

 2 public class reverseTest {
 3        
 4     public static void main(String[] args) {
 5        String originalString = "abcdefg";
 6        StringBuffer stringBuffer = new StringBuffer(originalString);
 7        System.out.println(stringBuffer.reverse());
 8     }
 9 }
10