摘要： Given a stack which can keep M numbers at most. Push N numbers in the order of 1, 2, 3, ..., N and pop randomly. You are supposed to tell if a given s 阅读全文

摘要： Suppose that all the keys in a binary tree are distinct positive integers. Given the preorder and inorder traversal sequences, you are supposed to out 阅读全文

摘要： 对于在中国大学MOOC（http://www.icourse163.org/）学习“数据结构”课程的学生，想要获得一张合格证书，必须首先获得不少于200分的在线编程作业分，然后总评获得不少于60分（满分100）。总评成绩的计算公式为 G = (G期中x 40% + G期末x 60%)，如果 G期中 阅读全文