Palindrome java stack overflow. 1 Issue with Palindrome class using Stacks.

Palindrome java stack overflow You can call the trim and toLowerCase functions on the string directly. Clearly, its two longest palindromic subsequences are aba and aca. Java Calculating all potential palindromes. As you continue to learn Java, you need to also learn how to debug. Modified 11 years, 1 month ago. Project Euler - Largest Palindrome #4 Python. Welcome to Stack Overflow and computer programming. The world is inhabited by a race of lobster-like beings Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; I have to determine whether an integer is a palindrome in JAVA. The input format is. Efficient way for Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Palindrome Checker with nested loops thats checks the input and then flips its to compare. Modified 13 years, 7 months ago We want to find the longest subsequence of a string x that is a palindrome. I would like a review to see where and how I could improve. I have tried many ways but its not getting me the correct answer. Hot Network Questions Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Palindrome number check- issue with output. Scanner; public class parlindr Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java algorithm palindrome& 0. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Here is my palindrome client file: (my stack. The logic of your while loop is faulty. Check if Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java: Palindrome, not getting biggest number. If not palindrome, add 1 to midpoint, do same logic. For generating the square roots you first need a lower and an upper bound. println("Enter a string to check if it is a palindrome"); original = in. The primary problem in your code is in the part where you assign the values to N and l. Recursive palindrome returns statement over and over. To learn more, see our tips on writing great After each line is read, I have to determine if the line contains a palindrome and, if it does contain a palindrome, I must print which type of palindrome it is (word, phrase, or number). Since the truth value of isPalindrome depends on whether last == first, it will always be true, since you coded it that way. java:20) I believe it is because I need a for loop of sorts. Stack; public class Palindrome { public static boolean is_palindrome(String input) { Stack<Character> original = new Stack<Character>(); Stack<Character> reversedStack = new Stack<Character>(); Stack<Character> tempStack = I tried to use some codes on Stack Overflow but when I used some codes,I didn't get the answer I want, this is my code now: Determine if an int is a palindrome in Java? 0. Yes it's possible, moreover, it's possible by using ArrayList, String - whatever you like. nextLine(); int length = original. In order to write down a correct implementation, first decompose your current solution: // Extract a method, do not cram all code into main() // note: all you need is array, to get size of the array, put value. Hot Network Questions Heaven and earth have not passed away, so how are Christians no longer under the law, but under grace? Palindrome in this case it not directly convertible to String. The assignment is to read the words from a file, determine I know it's very puny thing for experts here but I want to check why my palindrome program is not working as expected, it shows as palindrome to every number or string i enter, can you please look into it where the issue is, please. Ask Question Asked 8 years, 7 months ago. I can tell you how to reverse the String to determine if it is a palindrome. Palindrome in java. Java Palindrome Program (am I on track)? 2. *; class would like too know if it is possible too create using only methods and loops, and if so how? Sure. Issue is, all of this is working and when i start the program and attach the text file, i only get the first palindrome. please help. Notice that you take the input in line just once and then assign it's integer value to both N and l. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Is a Singly Linked List Palindrome? JAVA. The smallest Palindrome number is greater N. 973 "PKIX path building failed" and "unable to find valid certification path to Java Palindrome checker. println("it is In Java, a string is said to be a palindrome if it reads the same backward as forward. Any other number will also increment a larger MSB and hence the next higher palindrome will have changes in the centre. Taking 94229 as an example, 9422992249 modulo (1<<32) is 833057657, which is what you're getting. However, you aren't resetting the backward Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; How to get rid of white space in palindrome (Java) 0. 1 Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. If no check fails, you want the result to be true. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Converting a string into a palindrome in Java. How to pass a char array to a method and return a boolean value. You are not constructing a palindrome: instead, you detect if a string that they give you is a palindrome or not. Provide details and share your research! Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; Java Palindrome checker. e. 0. Java saying everything is palindrome. length()-1 as that will then be the first index from the top that you check. Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java program to find palindrome numbers in given range. e. isPalindrome should be made non-static. I am trying to solve hacker rank question for counting number of special palindrome strings contained within a string ; To be considered for Special palindrome strings, all the characters should be same, as well as all characters except middle one are the same; Say for example, string = asasd, then palindromic strings are {a, s, a, s, d, asa, sas} Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Recursive Palindrome, Java. , until you 1) run out of words, 2) have a palindrome, or 3) have a palindrome like "doggod" where word boundaries are exactly in the middle, in which case you can (recursively) search for more palindromes with the remaining words and put anything you get in the middle, like "dogracecargod" or "dogmadamgod" or "dogmrowlatemymetalwormgod". ; The test itself should say false when any character pair is different; once you've determined it's different, it shouldn't be able to flip to true any more. Palindrome Program avoiding spaces, punctuation in Javascript. The program is working however, as one of the inputs is quite large, I have chosen to use BigInteger to solve the overflow problem I was having with regular integers. Hot Network Questions Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Valid Palindrome, solution too slow for large input sizes. A palindrome is a word, phrase, number or other sequence of units that can be read the same way in either direction. This kind of loop is a common idiom: you have to check a number of things, and if any check fails, you want the result to be false. Hot Network Questions What does “going off” mean in the following conversation? Cookie cutter argument for nonphysicalism A website asks you to enter a Microsoft/Google/Facebook password. Check whether a given String is palindrome or not without using any library without loop. Modified 6 years, 10 months ago. Palindromic pairs in an array of words. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Feel free to ask question :) Hope I could help in some way. Your output is thus correct. Java Number Palindrom. I have a suspicion it has the problem lies within the inner for loop, but I would appreciate any input. Find Palindrome numbers. To accomplish this I place the contents of a string into a queue and a stack one character at a time. Along with the answer above you can try a different approach. To learn more, see our tips on writing great Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Recursive Palindrome, Java. This is due to integer overflow. the space complexity is O(n^2) because the program needs the length of the string squared objects for calculation "new boolean[len][len];". java (Introduce?) Ask Question Asked 9 years, 10 months ago. I then have a for loop compare the entries of the stack with that of the queue to see if they match up. and so on, So it will be 2 + 2 0 + 2 1 + 2 2 Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Example: Learn to check if a string is palindrome string with simple java programs using stack, queue, for and while loops. Hot Network Questions Is honey good or bad for kids? Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Trying to find palindrome number. Let us illustrate with the string abca. Your code is: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; Java Palindrome checker. Viewed 2k times 2 Hi I'm busy writing a program that checks (within terminal) if your input is a palindrome (sorry the Variabels are in Dutch) but the problem I have come on is even though I got the String reversed and in an if Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; How do you check if a string is a palindrome in java? 0. Collectives™ on Stack Overflow. Ask Question Asked 9 years, 10 months ago. Javascript Palindrome Logic. To learn more, see our tips on writing great Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Viewed 5k times 1 . Viewed 566 times 0 I have a issue with my palindrome checker as it is not working properly. How to write palindrome in JavaScript. How do i print palindrome words in a string? 3. Provide details and share your research! Java Palindrome program not working. LinkedList; import java. Palindrome Program. Hot Network Questions Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; Palindrome Program in java. Here is the code that I have written: public class JavaApplication2 { /** * @param args the command line We can find the shortest Palindrome using the following logic: Find the midpoint, loop from 0 to midpoint, length-1 to midpoint. Forming Palindrome from a String. So my suggestion you could declare 2 ArrayList variables say palindrome and primePalindrome Like this:. However, having inadequate Java experience, I am unsure. Converting a string into a palindrome in Java. PALIN- The next Palindrome - a SPOJ problem. Q&A for work Check palindrome in C++/Java [duplicate] Ask Question Asked 13 years, 6 months ago. Output all the vowels. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; Well i tried to write a program in java to find the palindrome , someone asked me to add a twist in that and the twist goes like this we Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java: Palindrome, not getting biggest number. 111. Provide details and share your research! Java Palindrome Program (am I on track)? 4. Stack; import java. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; I am building a palindrome program in Java. It is easy to make mistakes in your code. Recursive method in Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java Palindrome program (1 error) Related. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java: Palindrome, not getting biggest number. Hot Network Questions Recursive Palindrome, Java. util. Recursive Palindrome Checker. 580085. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; I want to check a string is palindromic using stacks implement in java. push(s. A palindrome is a word, phrase, number, or other sequences of Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Checking if a string is a palindrome in Java. Industry I have been trying to solve the problem of circular palindrome all day, as part of a HackerRank challenge. length(); i++) { stack. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; check palindrome in java code. Java Palindrome always returns true. So, the problem is that your program is not taking an expected input: you have to take the input in line twice. Can anyone please help. Every other 2-digit number is divisible by 11. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java Palindrome checker. aacc The outputs for the above are -1, two times as the strings can't be converted to palindrome, no matter what you keep in the place of . Improved solution of problem 4 from Project euler. In code: Java Palindrome checker; Java- Palindrome Program; Share. Palindrome. confused how this palindrome test works. out. Even as a professional programmer, I rarely get it right the first time. actually i'm trying to create this program on my own and not checking any ready made method for it so asking here. ) If you need further explanation please tel I presume this is a Codechef problem. For 5 digit binary number 4 palindromes are possible 2*(no of 3 digit palindrome) 10001,10101, 11011, 11111. String a = sc. I know how to print reversed n, but I am having trouble with saving the reversed number. Not able to figure out the solution for Java program to check whether string is palindrome. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; palindrome int in java. Hello, I have created a java program that is intended for outputting Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Recursive Palindrome, Java. A palindrome is equal to its reverse. bc . Java Palindrome checker. In this article, we will learn how to check if a string is a palindrome in Java. java:27) Java Result: 1 So, basically it says I'm missing a return statement? I do not see how that is possible. If not pali Etc. The reasoning is simple. Check if an array is palindrome. Trying to resolve this Java problem: finding palindromes (String) 0. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; java; substring; palindrome; Share. Remove all the vowels in the arraylist and store in another arraylist. Check if a string is a Palindrome (using methods) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; How to split user input into char array or string array and then check if palindrome or not in java. To learn more, see our tips on writing great Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java Palindrome always returns true. Queue; import java. Efficient way to get palindrome using recursion. But, by definition, a palindrome is a string that is read the same forward and backward. I'm writing a Java program for a project that finds whether or not a 3-digit number is a palindrome, and when I finished it I didn't realize that the instructions also said that it has to detect if it's a 3 In this article, we’re going to see how we can check whether a given String is a palindrome using Java. There are plenty of other conditionals in the language, and there are multiple ways that you could implement the semantics of an if statement (including an else clause, if desired) without actually using an if statement. So I ran into this code on the Internet: Java Palindrome program not working. The question is: A palindromic number reads the same both ways. answered Jan 18 Thanks for contributing an answer to Stack Overflow! Please be sure to answer the Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java - Using Recursion to Find Palindrome. the time complexity is something of I am currently working on an /r/dailyprogramming challenge to calculate how many steps it takes to turn a number into a palindromic number. If there is an even palindrome ABCCBA, the next larger palindrome will be ABDDBA where D=C+1. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Recursive Palindrome, Java. Hot Network Questions I'm looking for a science fiction book about an alien world being observed through a lens. main(Lab08st. Follow edited Jan 18, 2018 at 17:19. Program to check for a Palindrome. Find longest palindrome, code passes half test cases. Palindrome Stack. To reverse the String, pass the original String to the StringBuilder constructor and use its reverse method to reverse the string:. So it can be approached as follows: Find the first character that makes the string NOT a palindrome, in other words, the first character that is different from the character at its "mirror" position. I need help understanding why the code I have written is returning Time Limit Exceeded? class Solution { public boolean isPalindrome(int x) { int reverse = 0; int remainder = 0 So I'm working on a program that identifies palindromes (words that are the same forwards and backwards). Homework Palindrome. Any help would be greatly appreciated . , reverse(456) returns 654 public static int reverse(int number) // Return true if number Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. (where the lookahead "counting" mechanism is further elaborated upon). 0 Trying to find palindrome number. isPal(Lab08st. How To Find The Nearest Palindrome Number? 2. Palindrome Recognizer. So for my assignment I have to write a program that uses instances of StackArrayBased. palindrome with a stack using linked lists does not return the correct answer. Ask questions, find answers and collaborate at work with Stack Overflow for Teams. Hot Network Questions I don't understand why I am not getting palindromes for my output. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Print Palindrome in Java. tell me whats causing it import java. Hot Network Questions AI Research vs. Use the ceiling of the square root of left and the floor of the square root of right. The if statement is redundant in Java. The problem is in your palinCheck method. Java- Check palindrome. charAt(i)); top++; palindrome program in java with examples of fibonacci series, armstrong number, prime number, palindrome number, factorial number, bubble sort, selection sort, insertion sort, swapping Given string str, the task is to find whether the given string is a palindrome or not using a stack. Find centralized, trusted content and collaborate around the technologies you use most. If palindrome, return. 654 1 1 gold badge 9 9 silver badges 32 32 bronze badges. public static boolean isPalindrome(int integer) { int palindrome = integer; int reverse = 0; // Compute the reverse while (palindrome != 0) { int remainder = palindrome % 10; reverse = reverse * 10 + remainder; palindrome = palindrome / 10; } // The integer is palindrome if integer and reverse are equal return integer == reverse; // Improved by In the first one, the user enters a number which is assigned to first, then you set last to be a reference to first. Longest palindrome program. Palindrome number check- Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; I am trying to create a Palindrome tester in java using a method. ) Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Palindrome program not giving correct output. Formatting Issue JAVA. To learn more, see our tips on writing great Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; How do you check if a string is a palindrome in java? 0. java and QueueArrayBased. Improve this question. Check if the word is a palindrome or not. I need a java class that will find the largest Palindrome product of two N digits numbers (N meaning any 0 to 10 digit numbers ie --> 10, 100, 1000 etc. For a given string s, find the longest substring s1 at the end of s that is already a palindrome. ArrayList<String> palindrome = new ArrayList<>(); ArrayList<String> primePalindrome = new ArrayList<>(); Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, For the record, this is a very inefficient way to check a palindrome in Java, because substring creates new strings, which is slow. This is because you are converting the string to an int and back into a String so 1020321 would Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. java and sends a string to both of them and compares the dequeue() and pop() method returns to determine if the string is a palindrome. 1. 24 gets palindromic after 1 steps: 66 -> 24 + 42 = 66. Your isPalindrome is quite close: 1) Move the equality check outside the loop 2) Use while-loop. length private static boolean isPalindrome(int[] value) { I'm assuming that you're reading in strings. Palindrome Numbers. String original, reverse = ""; Scanner in = new Scanner(System. Change ints to longs, and that'll increase the range of numbers your code will be able to handle (the range will, of course, There's only one 2-digit prime palindrome: 11. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java- Check palindrome. The question is below. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Palindrome. EDIT: Considering maartinus' answer, you should also check the opposite direction and choose the I created a string palindrome program, but I am getting a Nullpointer exception. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Recursive Function : Check for palindrome in Java. You are using the backward variable to reverse the word and check whether it and firstWord, are equal. Provide details and share your research! Recursive Palindrome, Java. println("it is a palindrome"); else System. Try Teams for free Explore Teams. Those functions are bound to the Palindrome class. Provide details and share your research! But avoid Asking for help, clarification, or responding to other answers. here's my Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java Palindrome checker. ; You should stop when you find one mismatch, as otherwise with a string of odd length, your result will The problem you described is actually not what is happening; your code does indeed move on to the next word. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 × 99. palindrome int in java. The pseudo code is: Note: in the following, the symbol represents assignment. Palindrome Number In Java. Then square it and check whether the square is also a palindrome. Viewed 658 times 0 I am using recursion to find out whether a string is a palindrome, while ignoring spaces and non letter characters. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java program to find palindrome numbers in given range. Can someone help me with it? Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; (Unknown Source) at Palindrome. Find the next non-space character at each side, convert to uppercase, and compare. main(Palindrome. It also has time complexity of O(n^2) because there are two nested for-loops, where the first one iterates over the length of the string and the second over length-k or at average length/2. Change that part to Java palindrome checker using queue AND restoring queue to original state. Not understanding the issue with my solution to a palindrome problem. Hot Network Questions On continuity and topology in the kernel theorem of Schwartz Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, palindrome int in java. Finding Palindromes in a word list. 4. 2. io. a. You first say whether or not a line is a palindrome, then test it - this way, each line will be printed based on the previous line's test. I'm using a simple function to check if a string is a palindrome. To learn more, see our tips on writing great Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Checking if a string is a palindrome in Java. The binary of the decimal 7 is a palindrome. i guess below logic would help you. 3. Follow edited Nov 12, 2015 at 20:36. Remember that the main value of Stack Overflow is the database of questions and answers that gets created for future use; not the immediate help to the original poster. /* * * A palindromic number reads the same both ways. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; largest palindrome product in java. java with methods. String str = "word"; StringBuilder buff = new StringBuilder(str); boolean This is all GUI based. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Converting a string into a palindrome in Java. Java - Using Recursion to Find Palindrome. Unable to test Palindrome. If there is an odd palindrome ABCBA, the next larger palindrome will be ABDBA where D=C+1. Ask Question Asked 9 years, 11 months ago. Examples: Input: str = "geeksforgeeks" Output: NoInput: str = "madam" Output: String newstr=""; for(int j=length-1;j>0;j--) { char m=str. Modified 9 years, 10 months ago. This is what I have so far. Hot Network Questions Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java Palindrome assignment - boolean always returns False value. Explore Teams. Iterate through the character array using a for loop as follows: on iteration 1, if the first character is equal to the last character, This is a assignment I'm doing and it seems I can't get it to work properly. import java. in); System. Palindrome in Java with NUmbers [closed] Ask Question Asked 13 years, 7 months ago. From you question it is evident that you require to store the palindromes and the prime palindromes seperately. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company There aren't many real-world applications for this, and finding Palindromes is fairly specific to Strings Even numeric palindromes operate on the digits within a String ie. Palindrome. g. You should do your index changes at the end of your loop, to fix starting the lower index from 1. for example,the following are palindromes: Sounds like [homework] You would be able to see the problem by stepping through your code in a debugger, but one problem you have is that the value returned by isPalindrome is ignored. I am able to come up with my own algorithm to determine a palindrome but couldn't come up with one without converting the integer to a string. Debugging the code for palindrome pairs in java. java:47) at Lab08st. Use string. Here I am trying to determine if a word or phrase is a palindrome by using stacks and queues depending on the phrase I write in. Viewed 4k times -1 . Hot Network Questions A couple things. Palindrome coding. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; Here's some insight to my way of detecting a palindrome using Java. The temp or palindrome local variable in each In case string is already palindrome, then -1 is also a valid answer. The traditional palindrome problem is basically to find the length of longest symmetric substrings (palindromes) within a bigger string. I want to implement two methods to check if a number is a palindrome. An int is 32 bits wide and is therefore limited to values between -2,147,483,648 and 2,147,483,647. To learn more, see our tips on writing great Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Palindrome. equals( str ) ) System. A palindrome can be checked iterating half of the array length like this - First of all your making things Complex, for a simple string why do you want use stack or queue . For example: For n = 3 method prints: 3; For n = 13 method prints: 1331; For n = 133 method prints: 133331; Basically, method reverses n and then adds it to the original n. Provide details and share your research! Converting a string into a palindrome in Java. Hot Network Questions The simplest way I can think of for a "longest palindrome" is this: If you have a String s, then: if s is itself a palindrome, then it's the longest palindrome in s; otherwise, the longest palindrome must be contained in either Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. is a numeric palindrome, but would still be found by analysing characters in a String. Provide details and share your research! Palindrome. Ask Question Asked 11 years, 1 month ago. charAt(j); newstr=newstr+m; } if(newstr. Thus, the same palindrome will also be a subsequence of the mirror image of x. Circular Palindromes. java strings concept for palindrome. I don't know how to effectively build a palindromic phrase based on your requirements. Generate the square root of the super palindrome first. However, this doesn't actually prove that the number is a palindrome, because for example if the user enters the number 56, the Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; (Palindrome. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company For a 3 digit binary number 2 palindromes are possible, 2*(no of 1 digit palindrome) The binary of the decimal 5 is a palindrome. Palindrome tester. next(); char b[] = a. It shows o/p as "Palindrome" even though the i/p that I've entered is not. You don't need to go all the string length to check a palindrome. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; Palindrome in java. Teams. 101. pixelmeow. Next try to generate only the numbers that are indeed palindromes. – Dawood ibn Kareem. Palindrome program is not giving the correct output in Java. . A palindrome is a word or phrase that reads the same forward and backward, ignoring blanks and considering uppercase and lowercase versions of the same letter to be equal. The thing is, you can't tell if the result is true until the loop is completely finished. Provide details and share your research! Java Palindrome checker. It must be able to test these 4 things: Thanks for contributing an answer to Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; import java. java class is accessible in the same program folder. Hot Network Questions How are instructions assigned to CPU cores? Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Java: How to create the shortest palindrome of a string by inserting the minimum number of characters? 1. Modified 4 years, 3 months ago. 1 Issue with Palindrome class using Stacks. This part introduces a specific form of nested assertion, which when combined with nested references allows Java regex to match what most people believe is "impossible": palindromes!! The language of palindromes is non-regular; it's actually context-free (for Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Determining a Palindrome using Stack and Queue in java. for (int i = 0; i < s. Project Euler -- Largest palindrome product. Provide Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Another problem you have is that 0 in the first half of the number are ignored. Finding palindrome number in java. Recursive Palindrome, Java. For example, for the input string "lambada", "ada" is a palindrome, so you just add the reverse of "lamb" and the result is "lambadabmal". Viewed 2k times The task is to convert a given string into a palindrome(IF POSSIBLE). Shortest Palindrome. For my test, I used the test input Hi my name is blolb. Then just put the reverse of s\s1 at the end. Improve this answer. A more efficient recursive Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Java Palindrome checker. Modified 8 years, 7 months ago. What is wrong with this Palindrome function. I have written the program but it is not returning the correct boolean, please help. Objective: (Palindrome integer) Write the methods with the following headers: // Return the reversal of an integer, i. I was working on a problem on LeetCode that asks the question: determine whether an integer is a palindrome without converting the integer into a string. find answers and collaborate at work with Stack Overflow for Teams. If palindrome, store the letters in an arraylist. To check whether a word is a palindrome I get the char array of the I am trying to check if a string is palindrome. java:31) at palindrome. If there is no such character, the string is already a palindrome. I am reading in a file and checking for palindromes and printing them out in my JTextArea afterwards using Stacks and Queue's. The requirement for this task is to do it in O(n) time and O(1) space. A user enters n and the recursive method returns the palindrome of n. left 0 I have written a code for the fourth question of Euler Project. Largest palindrome product. Learn more about Collectives Teams. Viewed 224 times 0 It is the 234th question on LeetCode. How To Find The Nearest Palindrome Number? 0. 42. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Java Palindrome checker. The algorithm is straightforward: you need two indexes - one stars at zero, the other one starts at number-1 (recall that Java arrays are zero-based). In order to do the palindrome part I have to use a pseudo code. ; With the previous change, you should start your upper index from userInput. length(); for ( int i = length - 1; i >= 0; i-- ) reverse = reverse hi am trying to write a palindrome checker code but if i enter "madam" it still tells me its not a palindrome please help. Palindromes function in java. You need to override the toString method and call that on Palindrome to make it into a String. Making statements based on opinion; back them up with references or personal experience. Recursive method in java to detect a palindrome. So you'd do this (pseudocode): Here's my Java code to find a palindrome of a string. Here is my code: Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Converting a string into a palindrome in Java. toCharArray() to convert each string to a char[]. bmzjdoa pwu kllo gjhpv egmxv xpbfqx tua bmplhd oofnzz uzri