title: Remove characters at certain position at string
body: <p>I want to remove certain characters at specific positions of the String. I have the positions, but I am facing problems removing the characters.</p>
  
  <p>what i am doing is:</p>
  
  <pre><code>if (string.subSequence(k, k + 4).equals("\n\t\t\t")){
      string = string.subSequence(0, k) + "" + s.subSequence(k, s.length());
  }
  </code></pre>
  
  <p>I need to remove <code>"\n\t\t\t"</code> from string</p>