title: Adding to a 2D Array
body: <p>How would I go about adding two elements into a 2D Array while looping.</p>
  
  <pre><code>for(...){
  gradeArray[i][i] (gradeArray[95][5]  &lt;---- i = 0, gets the zero term for the grade and frequency 
  gradeArray[i][i] (gradeArray[96][2] &lt;-----i = 1; gets the first term for the grade and frequency
  </code></pre>