# 19. Company Summary

## Facebook(9)

* 要求極高, 20 min, bug free
* Leetcode medium難度
* 4-5 rounds(一輪 lunch). Feedback is not shared until complete.
* 靈活/多個解/效率/follow up
* Classic: 2sum-3sum-4sum, 2D矩陣駔短路徑, 炸彈人, BST

## LinkedIn(6.5)

* 知識點較為全面
* 1輪Technical Cmmunication, 1輪System Design, 2-3輪algo, 1輪HR manager
* Classic: sqrt, nested element iterator, paint fence/house, 最短點線距離

## Amazon(6)

* 14條[Leadership principle](https://www.amazon.jobs/en/principles)熟記
* 3輪technical+BQ, 一輪VP, 一輪hiring manager
* Classic: BST level order traversal, longest Palindromes, longest substring without repeating characters

## Google(9.5)

* 有自己的題庫
* 4-5輪
* DP/graph必考, 三題可能兩題DP
* 面試官會發自廖，裡面可能會有原題

## Microsoft(6)

* 4-5輪Tech, interview with 1-2 team, meeting with hiring manager is a good sign
* Classic: Min stack, house robber
*
