Interview Experience

Goldman Sachs, Bengaluru

Application: Summer Analyst Internship 2021

Application Process: Filled via Engineering Campus Hiring Program.

Round 1: Aptitude Test

• Duration: 105 minutes
• Questions: 66 MCQs (including 2 subjective)

Topics Covered:

• Quantitative Aptitude
• Logical Reasoning (Dominant)
• Subjective: Intuitive, not formula-based

Tips:

• Practice quizzes on GeeksforGeeks to refresh tricks.
• Stay calm during the test — avoid getting stuck on any one question.

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Goldman Sachs, London

Application: Summer Analyst Internship 2021

Round 1: Programming Round

• Duration: 2 hours

• Problems:

  1. Find element where left and right sums are equal
  2. Count distinct palindromic substrings

Note: Solved both within an hour due to prior practice.

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Google

Application: SDE 2021

Process: Filled the form and submitted resume. Attended webinar: Life @ Google.

Round 1: Technical Interview

• Duration: 60 minutes

• Problems:

  1. XOR Queries (similar to this problem)

     • Type 0 x: insert x
     • Type 1 x: XOR all elements with x and print in sorted order

  2. Given a BST, print ancestors of a node that are co-prime with it.

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Codenation

Tech Round

• 3 Problems in 90 Minutes

1. Crazy Cube

• Scenario: Infinite walls, floor

• Goal: Minimize floor area to place n cubes

• Constraints:

  • Cubes can be stacked only if surrounded by other cubes or walls
  • Test cases < 10⁶
  • Cubes in each test case < 10¹⁸

2. War with China

• Scenario: India wants to destroy n Chinese cities in D days

• Mechanics:

  • Missile of power Y destroys cities with defense < Y instantly
  • Each day, affected cities reduce defense of nearby cities
  • A city is demolished if defense < 1

• Goal: Find minimum missile power to destroy all cities in D days

3. Business Profit Max in Min Time

• Data: n points of 2 types:

  • C timestamp a: Cost (decreases value)
  • L timestamp a: Latency (increases value)

• Goal: Find minimum time interval that gives maximum profit = value - cost