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Design Patterns (Factory, Abstract Factory, singleton, DAO, Proxy)： 1. Factory: In Factory pattern, we create object without exposing the creation log 阅读全文
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标签： 动态规划 题目描述： There are a row of n houses, each house can be painted with one of the k colors. The cost of painting each house with a certain color i 阅读全文
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标签： 动态规划 描述： Find the contiguous subarray within an array (containing at least one number) which has the largest product. Find the contiguous subarray 阅读全文