42. Trapping Rain Water
摘要：
Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining. 阅读全文
posted @ 2016-03-15 21:00 菜鸟2s 阅读(168) 评论(0) 推荐(0) 编辑
