title: Math.floor() - is my understanding correct?
body: <p>In this function, string.length / 2 should = 5/2, or 2.5.
  If that is the case, then is the reason that
  string[Math.floor(string.length / 2)] returns 'v' is that 'v' is located at index 2?</p>
  <pre><code>// inputs: a string: 'fever'
  // 0 - f
  // 1 - e
  // 2 - v
  // 3 - e
  // 4 - r
  
  // outputs: if input string is odd: return char at the midpoint of the string,
  or if input string is even: return an empty string.
  
  function findMiddleChar(string) {
  // if input string is even
  if(string.length % 2 === 0) {
  // return an empty string
  return '';
  // otherwise
  } else {
  // return input string value at middle index(rounded down to nearest index) return string[Math.floor(string.length / 2)];
  }
  }
  </code></pre>