Challenge #130: Is There an Echo in Here?

[piotrzawistowski]

My version with Regex.

[viveknshah]

Spoiler

The University class on RegEx to the rescue! 

[fmeo]

Spoiler

[RWvanLeeuwen]

I can't seem to even interpret the RegEx of the one tool solutions. Just something about capture groups and juggling them around. So if anyone has a helpful read on that for me, thanks in advance.

Here's my multi-tool approach:

Spoiler

[ddiesel]

I knew the one tool solution was a RegEx Replace formula but I couldn't quite get the syntax right. 

My solution:

Spoiler

[mbogusz]

Spoiler

Breaking out my text-to-columns and cross tab!

Thank you @neilgallen for the easily understandable solution.

[markcurry]

Here's my solution.

[chetty]

My solution attached

[OllieClarke]

Got that one tool solution, but holy nested REGEX batman...

Spoiler

edit: just looked at some other solutions and I really overcomplicated this...