我遇到的问题是我输入了一个像" non"我回来了它是一个回文。然后我输入"是"正如我问的那样#34;继续前进?"。它开始在" Type Word:"我打字#34;非"再次。但这次我回来了它不是回文。我认为它与我如何声明我的变量或可能与for循环有关。我无法解决这个问题。任何帮助表示赞赏。
import java.util.*;
public class palindromeTest
{
public static void main (String [] args)
{
Scanner in = new Scanner (System.in);
String word = "", backword = "", exit = "";
int length;
do{
System.out.print ("Type a Word: ");
word = in.nextLine();
length = word.length();
for (int i = length - 1; i >= 0; i--)
backword = backword + word.charAt(i);
if (word.equalsIgnoreCase(backword))
System.out.println ("This IS a Palindrome.");
else
System.out.println ("This is Not a Palindrome.");
System.out.println ("Keep Going? /n Yes or No?");
exit = in.nextLine();
}while(exit.equalsIgnoreCase ("Yes"));
}//end main
}//end palindromeTest
答案 0 :(得分:0)
将backward
的声明移动到循环体中(因此它会在每次迭代时重置),
String word = "", exit = "";
int length;
do {
String backword = "";
但是,使用StringBuilder
进行String
连接更好一点,但我会将优化作为练习留给读者。