Over a million developers have joined DZone.

Java Interview Question; Anagram of a Palindrome

DZone's Guide to

Java Interview Question; Anagram of a Palindrome

· Java Zone
Free Resource

What every Java engineer should know about microservices: Reactive Microservices Architecture.  Brought to you in partnership with Lightbend.

In many interview questions, what they are looking for is a simple solution to an apparently complex problem. Unfortunately, the solutions are usually obvious if you know the solution, but very hard to come up with in an interview situation. ;)


Anagram of Palindrome

Write a method to test if a String is an anagram of a palindrome. The method should have O(n) time complexity and O(1) space complexity. You can assume all letters are between ' ' (space) and 'z'. Assume only letters matter and case is ignored.

"Rats live on no evil star"
"A man, a plan, a canal, Panama"
"Doc, note: I dissent. A fast never prevents a fatness. I diet on cod."


The solution

A brute force approach is to generate anagrams and test if they are a palindromes. This is not required. All you need to test is if the String is the sort of string which can be turned into a palindrome.

Sample solution be given Thursday 15th.


From http://vanillajava.blogspot.com/2011/12/java-interview-question-anagram-of.html

Microservices for Java, explained. Revitalize your legacy systems (and your career) with Reactive Microservices Architecture, a free O'Reilly book. Brought to you in partnership with Lightbend.


Opinions expressed by DZone contributors are their own.


Dev Resources & Solutions Straight to Your Inbox

Thanks for subscribing!

Awesome! Check your inbox to verify your email so you can start receiving the latest in tech news and resources.


{{ parent.title || parent.header.title}}

{{ parent.tldr }}

{{ parent.urlSource.name }}