substring函数是左闭右开的,比如说s=“vector” s.substring(0,2),实际取到的位置是[0,2),也就是“ve” String Palindrome(String s , int l , int r){ while(l>=0 && r<s.length() && s.charAt(l)==s.charAt(r)){ r++; l--; } // 循环退出时,l可能为-1,r可能为s.length, //[l...
import java.util.function.Predicate; public class Main { public static void main(String[] args) { // Define the palindrome check lambda expression Predicate < String > isPalindrome = str -> { String reversed = new StringBuilder(str).reverse().toString(); return str.equals(reversed); }; /...
publicclassStringDemo {publicstaticvoidmain(String args[]) { String palindrome= "Dot saw I was Tod";intlen =palindrome.length(); System.out.println("String Length is : " +len ); } } 以上实例编译运行结果如下: String Length is : 17 连接字符串 String类提供了连接两个字符串的方法: string...
publicbooleanisPalindrome(String text){Stringclean=text.replaceAll("\\s+","").toLowerCase();intlength=clean.length();intforward=0;intbackward=length -1;while(backward > forward) {charforwardChar=clean.charAt(forward++);charbackwardChar=clean.charAt(backward--);if(forwardChar != backwardChar)r...
private static boolean isPalindrome(String str) { if (str == null) return false; StringBuilder strBuilder = new StringBuilder(str); strBuilder.reverse(); return strBuilder.toString().equals(str); } 1. 2. 3. 4. 5. 6. 7. 假设面试官让你不使用任何其他类来实现的话,我们只需要首尾一一对...
用StringBuffer对象进行比较的时候有点麻烦,equals方法没有重写,所以转换成string来处理的。 下面的代码展示了一个简单的例子: /*This program displays true if the word or phrase entered in the command line is a palindrome, or false if it is not.*/publicclassPalindrome {publicstaticvoidmain(String arg...
JAVA版本一 代码语言:javascript 代码运行次数:0 运行 AI代码解释 private static int maxLen = 0; private static String sub = ""; public static String longestPalindrome(String s) { if(s.length() <= 1) return s; for(int i = 0;i < s.length()-1;i++){ findLongestPalindrome(s,i,i);...
Below image shows the output of the above longest palindrome java program. We can improve the above code by moving the palindrome and longest lengths check into a different function. However, I have left that part for you. :) Please let me know if there are any other better implementations...
Write a Java method to check if an input string is a palindrome. A string is a palindrome if its value is the same when reversed. For example,abais a palindrome string. TheStringclass doesn’t provide any method to reverse the string but theStringBufferandStringBuilderclasses have areverse(...
“race a car” is not a palindrome. Note: Have you consider that the string might be empty? This is a good question to ask during an interview. For the purpose of this problem, we define empty string as valid palindrome. 这道题没什么难的,就是考细心和对java的熟悉了,从两头往中间数,碰...