HackerRank Encryption - Solution Walkthrough (JavaScript)

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In this quick walkthrough, I'll explain how to approach and solve the Encryption HackerRank problem. Its difficulty rating is 'Medium', and I'll be solving it in JavaScript. (I mistakenly said at the beginning of this video that the challenge is rated as Easy.)

Please leave any questions down below. Thanks for watching!
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Why have you declared Row when you have not used in the algorithm ? Please explain ?

paulspaurgen