Treap insertion. I'm not sure when the rotations happen and it balances itself out.

Insert the following keys:priorities into an initially empty treap and draw the resulting treap. The keys are letters and the priorities are in the range [0...1]. Lower values for priority are higher in the tree. I:0.6,P:0.4,B:0.65,L:0.75,D:0.15,G:0.9