Given an array of integers, every element appears three times except for one. Find that single one.

Given an array of integers, every element appears twice except for one. Find that single one.

Follow up for H-Index: What if the citations array is sorted in ascending order? Could you optimize

Given a sorted array of integers, find the starting and ending position of a given target value.

效果

internal包下也封装了一个同名的pollDesc对象，不过是一个指针(关于internal有个细节就是这个包是不能被外部调用)：

首先我们了解一个结构体。golang中所有的网络事件和文件读写都用fd进行标识(位于internal包下)。

Given a non-empty array of integers, every element appears twice except for one. Find that single one.

Given a non-empty array of integers, every element appears three times except for one, which appears exactly once. Find that single one.

Given an array nums containing n + 1 integers where each integer is between 1 and n (inclusive), prove that at least one duplicate number must exist. Assume tha...