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 ...
publicbooleanisPalindromeUsingStringBuilder(String text){Stringclean=text.replaceAll("\\s+","").toLowerCase();StringBuilderplain=newStringBuilder(clean);StringBuilderreverse=plain.reverse();return(reverse.toString()).equals(clean); }publicbooleanisPalindromeUsingStringBuffer(String text){Stringclean=text.r...
Checking string palindrome in Java: Here, we are going to learn how to check whether a given string is palindrome string or not? Submitted by IncludeHelp, on July 12, 2019 Given a string and we have to check whether it is palindrome string or not....
importjava.util.Scanner;publicclassPalindrome{publicstaticvoidmain(String[] args){Scannersc=newScanner(System.in);longn;while((n = sc.nextLong()) !=0){// 输入以零结束longnum;booleanbook=true;Stringstr=null;for(inti=2;i <=16;i++) {// (2-16) 进制num = decimalToMRadix(n, i);// ...
import java.util.*; public class Example1 { public static void main(String[] args) { // creating an instance of Scanner class Scanner sc=new Scanner(System.in); System.out.println("Enter a number to check palindrome: "); // to take input from user int num = sc.nextInt(); // co...
A palindrome is a word, phrase, number, or other sequence of characters which reads the same backward as forward, such as madam. Write a java program to find the longest palindrome present in a given string. For example, in the string a
TheStackis a last-in-first-out (LIFO) collection. packagecom.zetcode.palindrome;importjava.util.Stack;publicclassPalindrome4{publicstaticvoidmain(String[] args){ System.out.println(isPalindrome("radar")); System.out.println(isPalindrome("kayak")); ...
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); }; /...
Another method to check if a string is a palindrome or not is by using aforloop. Below are the steps to check if a string is a palindrome in JavaScript. functionpalindromeFn(string){conststringLength=string.length;for(leti=0;i<stringLength/2;i++){if(string[i]!==string[stringLength-1...
代码细节就是有一个isPalindrome的helper function。 一个hashmap存入所有<string, idx> paris加速查询。 容易出bug的两个地方, 以["abcd", "dcba", "lls", "s", "sssll"]为例。 1. 如果一个str本身就是panlindrome,reverse就是本身,一定在hashmap里,去重的方法就是判断map.get(reverse(str)) != i...