booleanisPalindrome(String input) { String reversed =newStringBuilder(input).reverse() .toString(); returninput.equals(reversed); } 正如我们所看到的,我们检查输入的 String和反转的输入是否相等,以确定输入是否是回文。
方法二:将字符串反转后与原字符串比较 publicstaticbooleanisPalindrome(String s){if(s ==null|| s.length() ==0) {returntrue; }Stringreversed=newStringBuilder(s).reverse().toString();returns.equals(reversed); } 方法三:使用Java 8的Stream API publicstaticbooleanisPalindrome(String s){if(s ==nu...
public boolean isPalindrome2(String s){ String temp=reverse(s); if(s.equals(temp)) return true; else return false; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 二:如何求一个给定字符串的最大回文字符串 例如,给定字符串St...
publicclassStringDemo{publicstaticvoidmain(String[] args){Stringpalindrome="Dot saw I was Tod";intlen=palindrome.length();char[] tempCharArray =newchar[len];char[] charArray =newchar[len];// put original string in an array of charsfor(inti=0; i < len; i++) { tempCharArray[i] = ...
String reversePalindrome=newString(charArray);//将 char 数组转化为 String 类型System.out.println(reversePalindrome); } } 4、String 类包含一个 getChar() 方法,将一个 string 或 string 的一部分转化为一个 characters 数组。因此我们可以将上述程序的第一个 for 循环改为 ...
* 主要使用StringBuilder的reverse方法把字符串反转,然后再比较两个对象是否相等 */ public static boolean palindrome(String s){ StringBuilder builder = new StringBuilder(s); StringBuilder reverse = builder.reverse(); String s1 = valueOf(reverse); ...
Write a Java program to implement a recursive method that reverses a string and then checks if it is a palindrome. Write a Java program to recursively reverse a string and then concatenate the original with its reverse. Go to: Java String Exercises Home ↩ ...
String reversePalindrome = new String(charArray); System.out.println(reversePalindrome); } } Running the program produces this output: doT saw I was toD To accomplish the string reversal, the program had to convert the string to an array of characters (firstforloop), reverse the array into ...
import java.util.*;class Main { public static void main(String[] args) { Scanner sc= new Scanner(System.in); System.out.print("Enter the number: "); int num= sc.nextInt(); int reverseNum=0, initialNum, remainder; initialNum = num; while(num!=0) {...
(n, i);// 将 n 转化成 i 进制str = String.valueOf(num);// 变成字符串形式// 以 str 作为构造StringBuffer对象的参数,再反转后转化成字符串Stringstrreverse=newStringBuffer(str).reverse().toString();if(str.equals(strreverse)) {// 判断是否是回文book =false;// 是回文数字System.out.println(...