the first/second interview for LaoHu
面試官很棒 在引導
自己太弱了
1 翻牆 原理機制 ip地址 過濾器 或者dns 解析無對映
2 手撕程式碼 樹 字串 多種思路 考慮時空複雜度
3 多執行緒 涉及volatile /synchronized 的使用原理
4 給定多個sql 語句，設計索引 根據一些規則（最左字首？等等這些）
5 給定一些表和欄位 書寫查詢語句
總結： 手撕程式碼能力太弱 資料庫深入細節
萬萬沒想到 答成那樣 竟然拿到了offer 開心！會繼續努力的
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