GeeksforGeeks

Minimize operations to make String palindrome by incrementing prefix by 1

Last Updated: 11 November 2022

Given a string S of numbers of length N, the task is to find the minimum number of operations required to change a string into palindrome and we can perform the following ...read more

DSA

palindrome

prefix

Find minimum number of non palindromic partition of Binary Array

Last Updated: 19 December 2022

Given a binary array A[] of length 2*N, the task is to find the minimum number of partitions that follow the below conditions:Each array element belongs to exactly one par...read more

DSA

palindrome

partition

Find two unique Palindrome Strings using given String characters

Last Updated: 19 January 2023

You are given a string S of two distinct characters as input, the task is to find two strings using characters of the given string, such that both strings are different fr...read more

Strings

Technical Scripter

Technical Scripter 2022

DSA

palindrome

frequency-counting

Minimum cost to convert the given String into Palindrome

Last Updated: 02 August 2023

Given a string S of length N and 2 integers X and Y, the task is to find the minimum cost of converting the string to a palindrome by performing the following operations a...read more

Last Updated: 21 September 2024

Given a string s, the task is to check if it is palindrome or not.Example:Input: s = "abba"Output: 1Explanation: s is a palindromeInput: s = "abc" Output: 0Explanation: s ...read more

Strings

Picked

DSA

Definitions and Meanings

palindrome

Palindrome in JavaScript

Last Updated: 21 June 2025

A palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward (ignoring spaces, punctuation, and capitalization). For ex...read more

JavaScript

Web Technologies

palindrome

Minimum cost to make the String palindrome using ASCII values

Last Updated: 08 February 2024

Given an input string S, the task is to make it a palindrome and calculate the minimum cost for making it a palindrome, where you are allowed to use any one of the followi...read more

Finding largest palindromic number divisible by smallest prime

Last Updated: 26 September 2023

Given a range [start, end], find the largest palindromic number in the range and check if it is divisible by the smallest prime number in the range.Examples:Input: start =...read more

DSA

palindrome

Prime Number

Minimum swaps required in the String such that S[i] != S[n-i+1]

Last Updated: 07 November 2023

Given a string S consisting of lowercase characters, the task is to find the minimum number of swaps required in the string such that S[i] != S[n-i+1], where 1 = i = n.Ex...read more

Determining Sandwich type for Palindromic Matrix

Last Updated: 13 November 2023

Given a 2D matrix, print if it is a Horizontal, Vertical, Proper, or Improper Sandwich. If all rows of the matrix are palindrome, then it can be folded in a vertical sense...read more

Matrix

DSA

palindrome

Construct the Largest Palindromic String which lies between two other Strings

Last Updated: 16 November 2023

Given two strings A and B of length N which contains only lowercase characters, find the lexicographically largest string C of length N which contains only lowercase chara...read more

Geeks Premier League 2023

Count Palindromic Substrings in a Binary String

Last Updated: 11 November 2023

Given a binary string S i.e. which consists only of 0's and 1's. Calculate the number of substrings of S which are palindromes. String S contains at most two 1's.Examples:...read more

Geeks Premier League 2023

Palindrome String Coding Problems

Last Updated: 09 April 2025

A string is called a palindrome if the reverse of the string is the same as the original one.Example: “madam”, “racecar”, “12321”.Palindrome StringProperties of a Palindro...read more

Strings

DSA

palindrome

Python Program To Check String Is Palindrome Using Stack

Last Updated: 26 February 2024

A palindrome is a sequence of characters that reads the same backward as forward. Checking whether a given string is a palindrome is a common programming task. In this art...read more

Find First Palindromic String in Array

Last Updated: 11 June 2024

Given an array of strings arr, the task is to return the first palindromic string in the array. If there is no such string, return an empty string "".Example:Input: arr = ...read more