title: Removing non numeric characters from a string
body: <p>I have been given the task to remove all non numeric characters including spaces from a either text file or string and then print the new result next to the old characters for example:</p>
  <p>Before:</p>
  <pre><code>sd67637 8
  </code></pre>
  <p>After:</p>
  <pre><code>676378
  </code></pre>
  <p>As i am a beginner i do not know where to start with this task. Please Help</p>