已知两种遍历序列求原始二叉树

http://dl.iteye.com/upload/attachment/0065/4326/f8cb5bea-eb40-3aad-9cba-18a59a1c709a.png

http://dl.iteye.com/upload/attachment/0065/4328/444c1a53-6b5c-3a45-b67e-fff48e8d9ec0.png

http://dl.iteye.com/upload/attachment/0065/4330/2ebccc50-d4ee-38cd-aac6-bddf5618c04d.png