Please answer both questions

Give the binary$-$tree representation of the following trees in the forest. $($Join these three trees in the forest to form a single binary tree.$)$

Use the Quick sort method as discussed in the note and video clip to sort the following items given in this order. Display all the steps of moving the pointers $($L$)$ and $($R$),$ switching of the items and the final placement of the Pivot up to the first partion. Use $21$ as the Pivot.