title: Get key value pair of hash for the given key , in ruby
body: <p>I have a hash h1, and key k1. I need to return complete key value pair for the given key in the hash.</p>
  
  <p>Like for key 'fish'
  i need to print 'fish' => 'aquatic animal'</p>
  
  <p>@h1, prints all the key value pairs.I need the way to print the key value pair for thr given key</p>
  
  <p>I am quite new to ruby, so sorry for the noobish question.</p>