面试面经 · Amazon
【Amazon】【SDE Intern】两轮电面,Coding + Leadership Principles,Bar Raiser 很严格
【Amazon】SDE Intern
基本信息
| 项目 | 内容 |
|---|---|
| 公司 | Amazon |
| 岗位 | SDE Intern |
| 轮次 | OA + Loop Interview(两轮) |
| 时间 | 2025 |
| 面型体感 | Coding 轮中规中矩,Behavioral 轮比重很大,需要认真准备 LP |
| 结果 | Offer |
面试题目(按提问顺序)
Online Assessment(OA,远程,70 min)
- Amazon OA Coding 题 #1
- Given two strings
sandt, determine if they are isomorphic. Two strings are isomorphic if the characters inscan be replaced to gett. - HashMap 映射题,O(n) 时间。
- Amazon OA Coding 题 #2
- Given an array of integers and a number
k, find the maximum sum of a subarray of sizek. - Sliding Window 固定窗口题。
Loop Interview(两轮,各 45-60 min)
Round 1:Coding + LP(45 min)
- Valid Parentheses(LeetCode #20)
- Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
- Stack 经典题。
- Lowest Common Ancestor of a Binary Tree(LeetCode #236)
- Given a binary tree, find the lowest common ancestor of two given nodes.
- 递归后序遍历,经典题。
- Leadership Principles 问题(Round 1)
- "Tell me about a time you had to deal with a difficult team member."(对应 LP:Earn Trust)
- "Describe a situation where you had to make a decision with incomplete information."(对应 LP:Bias for Action)
Round 2:Coding + LP(45 min)
- Kth Largest Element in an Array(LeetCode #215)
- Find the kth largest element in an unsorted array.
- Min-Heap 或 Quick Select 解法。
- Leadership Principles 问题(Round 2)
- "Tell me about a time you went above and beyond what was expected."(对应 LP:Deliver Results)
- "Give me an example of a time you had to learn a new skill quickly to complete a project."(对应 LP:Learn and Be Curious)
- "Describe a time you received critical feedback. How did you handle it?"(对应 LP:Have Backbone; Disagree and Commit)
面试感受 / 反馈
- Amazon 的面试 一半在考 Behavioral,这点和 Google/Meta 很不同,千万别忽视 LP
- LP 问题不是走形式,面试官会 deep dive 追问细节,用 STAR 格式回答是必须的
- Coding 题难度偏 Medium,但面试官非常关注你对边界条件的处理
- Amazon 对时间复杂度要求没那么高,更看重代码是否 clean、是否有 edge case 处理
- Bar Raiser 轮(通常是第二轮面试官)对 Leadership Principles 的考察更深入
准备建议
- Leadership Principles 是重中之重:准备 6-8 个 STAR 故事,覆盖 Amazon 16 条 LP 中的 8-10 条
- STAR 格式要熟练:Situation → Task → Action → Result,每个故事控制在 3-4 分钟
- Coding:Stack、Heap、Tree LCA、Sliding Window 是高频题
- Amazon 喜欢问 "What if..." 的 follow-up,准备好应对变化的能力
- 面试结束后发 thank-you email,Amazon 的 HR 很看重这个细节