title: How do I compute the square root of a number without using builtins?
body: <p>how can I create a method that returns the sqrt of a given nunber?  </p>
  
  <p>For example: sqrt(16)  returns 4 and sqrt(5)  returns 2.3 ...<br>
  I am using Java and know the <code>Math.sqrt()</code> API function but I need the method itself.</p>