英語的學習
acquisition
n. 收購 并購 購買 添置
If a company or business person makes an acquisition, they buy another company or part of a company.
前綴：ac- = to 去钦铺、往
詞根：quis = seek, ask 尋求蔓腐，問
后綴：ition = 名詞, 表：行為倦卖、過程
ankle
n. 腳踝
Your ankle is the joint where your foot joins your leg.
前綴：ank = to bend 彎麦牺、鉤
后綴：-le = 名詞, 表示：小~
carbohydrate
n. 碳水化合物
Carbohydrates are substances, found in certain kinds of food, that provide you with energy...
詞根：carbo = carbon 碳
詞根：hydr = water 水
后綴：-ate = 名詞或形容詞
chronic
adj. 慢性的筒捺，長期的
A chronic illness or disability lasts for a very long time.
詞根：chron = time 時間
后綴：-ic = 形容詞
這里聯(lián)想到cron 表達式
dedicate
v.獻身；投身椭迎；致力
If you say that someone has dedicated themselves to something, you approve of the fact that they have decided to give a lot of time and effort to it because they think that it is important.
前綴：de- = down 往下
詞根：dic = proclaim 宣稱
后綴：-ate 動詞：做、造成
加入托詞魔鬼訓練 mini 營凭涂，每天拼寫 5 個詞，已經(jīng)第 27 天了贴妻。
代碼的學習
做了一道關于樹的練習題切油，一開始連測試用例都沒看明白。
https://leetcode-cn.com/problems/n-ary-tree-preorder-traversal/
看到這個測試用例名惩，懵逼了澎胡，這個數(shù)組怎么表示的是這樣一顆二叉樹呢？
接著有被這篇示例誤導了：
https://support.leetcode-cn.com/hc/kb/article/1194353/
這篇示例講的是二叉樹娩鹉，而測試用例是N叉樹攻谁。
后來，改了幾個測試用例弯予，才明白戚宦，原來就是對N叉樹簡單的水平遍歷，每層用 null 分開锈嫩。
蠢啊受楼。
記錄一下。
