Check if Palindrome

Write a method that checks if a string is a palindrome (reads the same forwards and backwards). The method should ignore case and spaces when determining if a string is a palindrome. Return false for null or empty strings.

A palindrome is a word, phrase, or sequence that reads the same backward as forward. For example, "racecar" is a palindrome, and "A man a plan a canal Panama" is also a palindrome when ignoring spaces and case.

Method Signature

public static Boolean isPalindrome(String text)

Examples:

Input: text = "racecar" Output: true Explanation: "racecar" reads the same forwards and backwards Input: text = "A man a plan a canal Panama" Output: true Explanation: Ignoring spaces and case, this reads the same forwards and backwards Input: text = "hello" Output: false Explanation: "hello" reversed is "olleh", which is not the same Input: text = null Output: false Explanation: Null strings are not considered palindromes Input: text = "" Output: false Explanation: Empty strings are not considered palindromes Input: text = "Racecar" Output: true Explanation: Case is ignored, so this is a palindrome
Apex Code Editor

Welcome to Lightning Challenge!

Create an Account

Sign up to track your progress, earn points, and compete with others. Your solutions will be saved automatically.

Create account

How It Works

  • • Write your solution in the code editor
  • • Connect your Salesforce org to test
  • • Submit to check if your solution passes
  • • Use hints if you get stuck

Contest Alert

🏆 #CodeEveryDay Jan 2026

Contest runs January 1 - 31. Complete challenges to climb the leaderboard!

Points are calculated for challenges completed during the contest period.