2017年8月6日
求解逆波兰表达式的值
摘要： 题目： Evaluate the value of an arithmetic expression in Reverse Polish Notation. Valid operators are +, -, *, /. Each operand may be an integer or anoth 阅读全文
posted @ 2017-08-06 23:26 郑 彪 阅读(286) 评论(0) 推荐(0)
二叉树的最小深度
摘要： 题目： Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the neares 阅读全文
posted @ 2017-08-06 22:45 郑 彪 阅读(1977) 评论(0) 推荐(0)