方法一：
1 public class reverseString { 2 public static void main(String[] args) { 3 String str="ILoveJavaAndPython"; 4 char[] strArray=str.toCharArray(); 5 int len=strArray.length; 6 char temp; 7 for(int i=0;i<len/2;i++){ 8 temp=strArray[i]; 9 strArray[i]=strArray[len-i-1]; 10 strArray[len-i-1]=temp; 11 } 12 String strAfter=String.valueOf(strArray); 13 System.out.println("Before:"+str); 14 System.out.println("After:"+strAfter); 15 16 } 17 }
方法二：
1 public class reverseString { 2 public static void main(String[] args) { 3 String str="ILoveJavaAndPython"; 4 char[] strArray=str.toCharArray(); 5 int len=strArray.length; 6 7 8 Stack<Character> stack=new Stack<Character>(); 9 for(int i=0;i<len;i++) 10 stack.push(strArray[i]); 11 String afterReversed=""; 12 for(int i=0;i<len;i++) 13 afterReversed+=stack.pop(); 14 System.out.println("Before:"+str); 15 System.out.println("After:"+afterReversed); 16 17 } 18 }