如何实现字符串的反转，如：输入abc，输出cba

[FEIFEI12345678]

如何实现字符串的反转，如：输入abc，输出cba

[goodmrning]

用栈来实现.利用它的先进后出的特点.

[craky]

String str = "abc";
String reStr = new StringBuilder(str).reverse().toString();

[dinglinhu]

[Quote=引用 3 楼 craky 的回复:]
Java code
String str = "abc";
String reStr = new StringBuilder(str).reverse().toString();
[/Quote]

good

[goodmrning]

String a(String str)
{
Stack<String> stack=new Stack<String>();
char ch='';
String outstr="";
for(int i=0;i<str.length;i++)
{
ch=str.charat(i);
stack.push(ch);
}
while(!stack.isempty())
{
outstr+=stack.pop();
}
return outstr;
}

[goodmrning]

[Quote=引用 3 楼 craky 的回复:]
Java code
String str = "abc";
String reStr = new StringBuilder(str).reverse().toString();
[/Quote]
这个好!

[yys55555]

[Quote=引用 3 楼 craky 的回复:]
Java code
String str = "abc";
String reStr = new StringBuilder(str).reverse().toString();
[/Quote]
ok

[FEIFEI12345678]

String str = "abc";
String reStr = new StringBuilder(str).reverse().toString();
这样太好了，给分了，谢谢

[huanyouchen8312]

String a(String str)
{
Stack<String> stack=new Stack<String>();
char ch='';
String outstr="";
for(int i=0;i<str.length;i++)
{
ch=str.charat(i);
stack.push(ch);
}
while(!stack.isempty())
{
outstr+=stack.pop();
}
return outstr;
}

这个程序运行不了 push中是string类型的

[ruixiang123456]

[Quote=引用 3 楼 craky 的回复:]
Java code

String str = "abc";
String reStr = new StringBuilder(str).reverse().toString();
[/Quote]

面试题中出现的概率非常的高！this answer is very good!