title: Cannot extropolate encryption techinque from this Hacker Rank challenge on Encryption
body: <p>I am doing some Hacker Rank problems and I cannot figure out what the encryption method is in the challenge details, <a href="https://www.hackerrank.com/challenges/encryption" rel="nofollow">here is the challenge.</a></p>
  
  <p>Excerpt from the challenge:</p>
  
  <blockquote>
    <p>The encoded message is obtained by displaying the characters in a column, inserting a space, and then displaying the next column and inserting a space, and so on. For example, the encoded message for the above rectangle is:</p>
  
  <pre>
  imtgdvs fearwer mayoogo anouuio ntnnlvt wttddes aohghn sseoau
  </pre>
  </blockquote>
  
  <p>There is no mention of how the characters are changed to the output example the challenge provides...</p>
  
  <p>I understand all elements of this question I think. The problem for me is: there is no details in the challenge about, after storing text in a grid, how the letters are encrypted.</p>
  
  <p>Perhaps I am just very unfamiliar with encryption techniques and if I was more versed I could recognize some simple encryption pattern from the example output.</p>
  
  <p><strong>What am I missing here?</strong></p>