title: How to check if a string contains two asterisk characters?
body: <p>We have a string input and the following combinations are valid (e.g. <code>sunday</code>, <code>*sunday*</code>, <code>sun*day*</code>, <code>*sun*day</code>, <code>su*nda*y</code>)
  If it contains only a single asterisk, then it is a bad input.</p>
  
  <p>So given the above input, how do I check to see if the string contains multiple asterisks.</p>