Skip to main content
All Questions

Given a string of lowercase English letters, count the ways to add one letter to it so that the result is a permutation of some palindrome.

Unlock detailed company stats for this questionUpgrade

Community answers

No answers contributed by the community yet.

Related questions

Given a string of lowercase letters, count the substrings made of one letter repeated, counting substrings at different positions separately.A substring is balanced when every letter in it appears the same number of times. Given a string of lowercase letters, find the length of the longest balanced substring.

Related courses

Course

Behavioral Interviews: A Practical Guide for Engineers

Get offers at the level you deserve. Prep for senior+ behavioral interviews at FAANG and Tier-1 companies. Made with staff and principal engineers from Meta, Netflix, Google, and more. Avoid downleveling, elevate past projects, and stop sounding like a robot.

Course

Software Engineering Interview Prep

Land your dream software engineering role at Google, Amazon, Microsoft, Meta, Apple, and other top companies. Learn from mock interviews, frameworks, and advice from senior candidates—practice data structures, algorithms, system design, people management, behavioral interviews, and more.