摘要：
Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation. Note: The given inte 阅读全文
摘要：
Given an integer array with even length, where different numbers in this array represent different kinds of candies. Each number means one candy of th 阅读全文
摘要：
The Hamming distance between two integers is the number of positions at which the corresponding bits are different. Given two integers x and y, calcul 阅读全文