Problem 31. Remove all the words that end with "ain"

MathWorks Cody Team

3K solvers

27 likes

Solve

Solve Later

Given the string s1, return the string s2 with the target characters removed.

For example, given

 s1 = 'the main event'

your code would return

 s2 = 'the  event'

Note the 2 spaces between "main" and "event" Only the four letters in the word "main" were deleted.

Solve

Solution Stats

10465 Solutions

2632 Solvers

Last Solution submitted on Jan 31, 2026

Last 200 Solutions

Problem Comments

8 Comments

Show 5 older comments

Aurelien Queffurust on 24 Feb 2012

This problem is fantastic to improve his knowledge with regular expressions!

Aditya Jain on 18 Oct 2016

I have rescored the leading problem to make sure its not zero

Dude on 26 Feb 2017

I learned so much about the regexp and strjoin functions because of this problem. Thank you!

shahriar memaran on 15 Mar 2017

I agree... This problem improved my knowledge of regexp. Although my code is running well in my computer but not here. I'm using R2015a. Can anyone please help ! Thank you

Sanzhar Askaruly on 18 Jun 2019

Did it in two steps, so many functionality in regexp that I discovered for myself today.. )

Asif Newaz on 28 Oct 2019

nice problem..really nic

CJ on 25 Nov 2025

Interesting problem.

Pierre on 15 Dec 2025

pretty tricky

Solution Comments

Show comments

Problem Recent Solvers2632

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!