摘要：
使用的时候需要导入sstream头文件 阅读全文
posted @ 2016-03-24 07:25
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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 @ 2016-03-24 07:01
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