摘要：
Given an array containingndistinct numbers taken from0, 1, 2, ..., n, find the one that is missing from the array.For example,Givennums=[0, 1, 3]retur... 阅读全文
摘要：
首先是C++提供的四种转型操作：1. const_cast：常量性的转除。2. dynamic_cast：安全的向derived class进行转型，可能会带来很高的开销3. reinterpret_cast：低级转型，例如可讲pointer转成int，不建议使用4. static_cast: 强迫... 阅读全文
摘要：
Given a collection of candidate numbers (C) and a target number (T), find all unique combinations inCwhere the candidate numbers sums toT.Each number ... 阅读全文
摘要：
Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in or... 阅读全文