Aaffine 仿射的 Ddomain 定义域 领域，域名，产业，地产 Fflexibility 灵活性，弹性，柔韧性，适应性 Llocalization 局部化 定位，局限，本地化 Ooblique 斜的 不光明正大的 Qquadratic 二次的 Sseparately 分别地

介绍16There are n bulbs that are initially off. You first turn on all the bulbs. Then, you turn off every second bulb. On the third round, you toggle ev ...

介绍15Given an array containing n distinct numbers taken from 0, 1, 2, …, n, find the one that is missing from the array. For example,Given nums = [0, 1 ...

介绍13Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the ...

介绍12Given a positive integer n, break it into the sum of at least two positive integers and maximize the product of those integers. Return the maximum ...

介绍9Related to question Excel Sheet Column Title Given a column title as appear in an Excel sheet, return its corresponding column number. For example: ...

介绍Given a non-empty array of integers, return the k most frequent elements. For example,Given [1,1,1,2,2,3] and k = 2, return [1,2]. Note:You may assu ...

介绍3Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. For example: Given num = 38, the process is li ...

宗成庆统计自然语言处理第五章：语言模型基本概念n元语法（n-gram model)，交叉熵，困惑度平滑法：加法平滑法，古德-图灵平滑法，Katz平滑方法。。。。。

介绍Calculate the sum of two integers a and b, but you are not allowed to use the operator + and -. Example:Given a = 1 and b = 2, return 3. 思路。。。太简单了啊， ...