摘要：Sheila is a student and she drives a typical student car: it is old, slow, rusty, and falling apart. Recently, the needle on the speedometer fell off. 阅读全文

摘要：①基础二分查找 ②lower_bound函数与upper_bound函数 (1) 在使用这两个函数前，必须保证该数组是非递减序列。 (2) lower_bound(begin,end,num)： 从数组的begin位置到end-1位置二分查找第一个≥num的元素，找到则返回该元素的地址，不存在则返回 阅读全文

摘要：描述 Jack and Jill have decided to sell some of their Compact Discs, while they still have some value. They have decided to sell one of each of the CD t 阅读全文