905. Sort Array By Parity

Given an array A of non-negative integers, return an array consisting of all the even elements of A, followed by all the odd elements of A.

You may return any answer array that satisfies this condition.

ARTS week-4

Algorithm

• [Leetcode]804. Unique Morse Code Words
• [Leetcode]929. Unique Email Addresses
• [Leetcode]595. Big Countries

C++ remove erase 用法浅析

remove 用法浅析

写这篇浅析完全是意料之外的，只怪才疏学浅。

刷[Leetcode]929. Unique Email Addresses的时候不能用boost库，一脸懵逼，为了去除整个字符串中的“.”，boost库中就是一句话boost::erase_all(str, ‘.’)，但是stl库中没有现成的接口可以使用，求助Google，发现了erase和remove结合使用可以达到目的；

595. Big Countries

今天这道题，是个sql语句的题目，选出符合条件的数据；

929. Unique Email Addresses

Every email consists of a local name and a domain name, separated by the @ sign.

For example, in alice@leetcode.com, alice is the local name, and leetcode.com is the domain name.

Besides lowercase letters, these emails may contain '.'s or '+'s.