title: Find the reoccurring element in an array with a nested each loop
body: <p>I initialize an array that has a duplicate element, and then I try to find that very element through a nested each loop.</p>
  
  <pre><code>array=(1..100).to_a
  array.insert(5, 100)
  
  array.each do |x|
    m = x
    array.delete(x)
    array.each do |y|
      if m == y
        puts m
      end
    end
  end
  </code></pre>
  
  <p>Anyone have an idea why this does not work?</p>