void bubbleSort(int myArray[], int last){
   // local variables
   int tmp;
   int bdry;
   int bub;

   // outer loop
   for(bdry = 0; bdry < last; bdry++){
      // inner loop
      for(bub = last; bub > bdry; bub--){
         if(myArray[bub] < myArray[bub - 1]){
            tmp = myArray[bub];
            myArray[bub] = myArray[bub - 1];
            myArray[bub - 1] = tmp;
         } // end if
      } // end inner
   } // end outer
   return;
} // end bubbleSort