前言

網頁排版分為Flex、Grid還有早期的float，這篇我們要來介紹Flex的排版，Flex中分為外容器和內元件，
下圖解釋兩種的差異

Difficult:Medium

題目

Given an m x n matrix board containing ‘X’ and ‘O’, capture all regions that are 4-directionally surrounded by ‘X’.

A region is captured by flipping all ‘O’s into ‘X’s in that surrounded region.

Difficult:Medium

題目

Given an unsorted array of integers nums, return the length of the longest consecutive elements sequence.

You must write an algorithm that runs in O(n) time.

Difficult:Easy

題目

A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forward and backward. Alphanumeric characters include letters and numbers.

Given a string s, return true if it is a palindrome, or false otherwise.

前言

甚麼是Docker?
Docker是一種軟體平台，可讓您快速地建立，測試和部屬應用程式。
Docker將軟體封裝到名為容器的標準化單位，其中包合程式庫、系統工具、程式碼和執行時間等執行軟體許需的所有項目。
使用Docker可以快速部屬到各種環境並加以擴充，而且知道程式碼是可執行的。