如何将反向输入与原始输入进行比较？

Question

我正在尝试调试程序，使其包含潜在的回文句。现在，它仅告诉我反向的单个单词是回文，但是它总是告诉我句子不是回文，即使它是回文。

我曾尝试将original.equals（reverse）更改为reverse.equals（original），但我继续获得相同的输出。

import java.util.Scanner;

public class WordPlay {
    public static void main(String [] args) {
    // Variable declarations
    String original, reverse = "";
    boolean lipE = true;
    boolean lipS = true;
    boolean palindrome = true;
    boolean alliteration = true;

    // Scanner object
    Scanner input = new Scanner(System.in);
    System.out.print("Please enter a sentence: ");
    original = input.nextLine();
    original = original.toLowerCase();
    System.out.println("The input that you entered was: " + original);


    // Determine whether a input is a lipogram
    for(int i = 0; i < original.length(); i++)
       if(original.charAt(i) == 'e' || original.charAt(i) == 'E' )
          lipE = false;
    if(lipE) {
      System.out.println("The input is a lipogram. ");
    }
    else {
      System.out.println("The input is not a lipogram avoiding the 
letter E.");
    }


    // Determine whether a input is a lipogram
    for(int i = 0; i < original.length(); i++)
       if(original.charAt(i) == 's' || original.charAt(i) == 'S' )
          lipS = false;
    if(lipS) {
      System.out.println("The input is a lipogram. ");
    }
    else {
      System.out.println("The input is not a lipogram avoiding the letter S.");
    }
    // Determine whether or not an input is a palindrome.
    // Compare the original input to the reversed input.
    double length = original.length();
    for (int i = original.length() - 1; i >= 0; i--)
         reverse = reverse + original.charAt(i);

      if (original.equals(reverse))
         System.out.println("The input is a palindrome.");
      else
         System.out.println("The input isn't a palindrome.");

预期结果是程序将识别出当句子被翻转并等于相同内容时，它将打印“输入是回文”。