MathWorks OA 最新题型解析 | 两题全AC思路讲解 + 高频考点总结 | 2026 NG

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今天上午剛帶一位學員剛做完 MathWorks 的最新 OA,兩道程式設計題全程只花了 15 分鐘就 AC 掉了,整體難度中等偏下,偏重基礎邏輯與模擬實現。 下面整理一下題目與思路,給還沒做的同學參考一下。

Q1: Valid Parentheses String

Problem:
You are given several strings containing only parentheses characters '(', ')', '{', '}', '[', ']'.
For each string, determine if it is valid — meaning all brackets are closed and ordered correctly.

Solution Idea:
Use a stack to simulate the matching process.

  • Traverse each character:
    • If it’s an opening bracket, push it to the stack.
    • If it’s a closing bracket, check whether it matches the top element of the stack.
    • If it matches, pop; otherwise, return invalid immediately.
      At the end, if the stack is empty, the string is valid.

This is basically the LeetCode “Valid Parentheses” template question — super straightforward, perfect warm-up.

Q2: Maximum Overlapping Team Size

Problem:
You are given n time intervals representing the working hours of different teams.
Find the maximum number of teams that are active (overlapping) at the same time.

Solution Idea:
Classic interval overlap problem — similar to “Meeting Rooms II.”

  • Extract all start and end points.
  • Mark starts as +1, ends as -1.
  • Sort all points by time, and accumulate the counts.
  • Keep track of the maximum cumulative value — that’s the maximum overlapping team size.

It can also be done via prefix counting or sweep line method; both are efficient since the input size is small.

OA Overall Review

这次 OA 两道题都非常常规,难度和 LeetCode Easy ~ Medium 持平。
系统界面简洁,输入输出没坑,时间 60 分钟足够。学员因为之前在我们这边练过几次“逻辑+实现题”模拟,整个流程几乎是 autopilot 模式,全程稳到不行。

MathWorks 的 OA 没有算法陷阱,考的其实就是 coding 手感和基础题熟练度,节奏和沟通感比技巧更重要。

MathWorks OA 最新题型解析 | 两题全AC思路讲解 + 高频考点总结 | 2026 NG

FAQ:MathWorks OA 常見疑問

Q1: OA 是在什麼平臺做的?
官方自家平臺,介面清爽穩定,不需要額外安裝外掛程式。

Q2: 有沒有拍攝或監控?
沒有攝像頭監控,但全程錄屏檢測環境,不建議切屏。

Q3: 題目風格?
偏向基礎演算法和邏輯題,代碼要求簡潔清晰,不考奇技淫巧。

Q4: 難度相比其他公司?
明顯比金融類 OA(Citadel、IMC)輕鬆,也比 Amazon OA 簡單,屬於“純 coding 實現”型測試。

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MathWorks 這種邏輯+實現型 OA,最容易在細節上掉分(邊界、格式、時間管理)。 我們這邊提供的 遠端無痕助攻方案,能在限定時間內幫你:

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不少同學靠這套方案穩穩拿到 MathWorks、NVIDIA、Stripe 等公司面邀。
如果你也想提前預演 OA 節奏,歡迎私信瞭解最新方案。

author avatar
Jory Wang Amazon資深軟體開發工程師
Amazon 資深工程師,專注 基礎設施核心系統研發,在系統可擴充套件性、可靠性及成本最佳化方面具備豐富實戰經驗。 目前聚焦 FAANG SDE 面試輔導,一年內助力 30+ 位候選人成功斬獲 L5 / L6 Offer。
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