2. Implementation 令 List Representation (A) (A(B,C,D)) o@⑦⑦(A(B(E,F,C(G,D(H,J)) (A(B(E(K,L),F),C(G),D(H(M),L,J))) K F C+G 位M D2. Implementation ❖ List Representation A B C D E F G H I J K L M ( A ) ( A ( B, C, D ) ) ( A ( B ( E, F ), C ( G ), D ( H, I, J ) ) ) ( A ( B ( E ( K, L ), F ), C ( G ), D ( H ( M ), I, J ) ) ) A B C D E F G H I J K L M