1import binarytree; 2 3picture pic,pic2; 4 5binarytree bt=binarytree(1,2,4,nil,5,nil,nil,0,nil,nil,3,6,nil,nil,7); 6draw(pic,bt,condensed=false); 7 8binarytree st=searchtree(10,5,2,1,3,4,7,6,8,9,15,13,12,11,14,17,16,18,19); 9draw(pic2,st,blue,condensed=true); 10 11add(pic.fit(),(0,0),10N); 12add(pic2.fit(),(0,0),10S); 13 14