Konversi preorder ke kalkulator postorder
10 5 1 7 40 50
Chandra C
10 5 1 7 40 50
30, 20, 10, 15, 25, 23, 39, 35, 42
12 7 1 4 8 10 21 13 15 26 30
15,10,12,11,20,18,16,19
10 8 9 13 12
15,11,8,6,9,12,14,26,20,30,35
1,2,3,4,5,6,7,8,9