摘要：
问题描述: Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight). For example, the 3 阅读全文
摘要：
问题描述: Given a sorted array, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocate extra sp 阅读全文
摘要：
问题描述: Given a non-negative integer represented as a non-empty array of digits, plus one to the integer. You may assume the integer do not contain any 阅读全文