Removing every other character in a string using Java regex

Question

I have this homework problem where I need to use regex to remove every other character in a string.

In one part, I have to delete characters at index 1,3,5,... I hav

Answer 1

Your regex needs 2 chars to match, so fails on the final char.

This regex:

".(.{0,1})"

Will make the second char optional, so it will match with your final '5' as well