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8.2Imagine you have a call center with three levels of employees: respondent, manager, and director. An incoming telephone call must be first allocate... 阅读全文
摘要：
Implement pow(x, n).快速求幂，注意n是负数的情况。 1 class Solution { 2 public: 3 double pow(double x, int n) { 4 double ans = 1.0; 5 int symbol ... 阅读全文
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The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integer n representing the total numb... 阅读全文