Goldman Sachs Interview Questions, Process, and Tips

Typical DSA round with one easy and one medium question

Dsa round with 2 coding questions both medium level one on dp and other on graph

Q1. Design Parking System
Ans. 
Design a parking system for efficient and organized parking.
• Consider different types of parking spaces (e.g. regular, compact, handicap)

• Implement a ticketing system for tracking parked cars

• Incorporate sensors for real-time monitoring of available spaces

• Include a payment system for paid parking spots

• Design a user-friendly interface for drivers to easily find parking spots
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Q2. Sytstem design
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It was an Online assessment composed of two parts: A Mathematical part and a Coding question.

Q1. How do you handle stressful situations ?
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Q2. Explain recursion
Ans. 
Recursion is a programming technique where a function calls itself in order to solve a problem.
• Recursion involves breaking down a problem into smaller subproblems and solving them recursively.

• A base case is needed to stop the recursion and prevent infinite loops.

• Examples of recursive functions include factorial calculation and Fibonacci sequence generation.
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Q1. Leetcode Question on Grid traversal
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Q2. Leetcode design system with EC2 instance Fleet
Ans. 
Design a system using EC2 instance Fleet on Leetcode platform
• Utilize EC2 instance Fleet to manage a group of EC2 instances for scalability and cost-efficiency

• Implement load balancing to distribute incoming traffic across multiple EC2 instances

• Use auto-scaling to automatically adjust the number of EC2 instances based on traffic demand

• Monitor system performance and health using CloudWatch metrics and alarms
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Coding test in python

Q1. General qs regarding dcf, corp finance, valuation
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Q1. Similar to previous rounds
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2 hard DSA questions

2 dsa questions were asked.
prefix search
binary tree camera

Parling lot low level design

Q1. Find the missing number in the array? Array size is of n-1 and contains 1 to n numbers with 1 digit missing.
Ans. 
The missing number in the array can be found by calculating the sum of all numbers in the array and then subtracting it from the sum of numbers from 1 to n.
• Calculate the sum of all numbers in the array.

• Calculate the sum of numbers from 1 to n using the formula n*(n+1)/2.

• Subtract the sum of array from the sum of numbers from 1 to n to find the missing number.
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Q2. Find the number of parenthesis have to be removed to make it a valid parenthesis --> (())) - 1 has to be removed, ((() -> 2 has to be removed.
Ans. 
Count the number of parenthesis to be removed to make it valid.
• Iterate through the string and keep track of open and close parenthesis.

• If a close parenthesis is encountered without a corresponding open parenthesis, increment the count of removals.

• Return the total count of removals needed to make the string valid.
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Q1. Find the maximum sub-array having continues numbers(i,i+1,i+2..)
Ans. 
Find the maximum sub-array with continuous numbers
• Iterate through the array and keep track of the current sub-array sum

• Update the maximum sum and sub-array indices as you iterate

• Handle cases where the array contains negative numbers as well

• Example: Input array [2, 3, -4, 5, 7], maximum sub-array is [2, 3, -4, 5, 7]
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Q2. Number of islands variant - focused on time complexity
Ans. 
Count the number of islands in a 2D grid variant, focusing on time complexity.
• Use Depth First Search (DFS) or Breadth First Search (BFS) to traverse the grid and mark visited islands.

• Optimize by using Union Find data structure to keep track of connected islands.

• Time complexity can be O(m*n) where m is the number of rows and n is the number of columns.
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Questions were asked on data interpretation

25 mins of gd
topic:AI boon or bane to jobs

Q1. Sql queries on join
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Q2. Puzzle on probability
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Q1. Finance questions , basic HR questions
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Q1. Company information and self introduction in brief
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Q2. Complete technical questions and process related knowledge was tested
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Q1. Major accomplishments and situational questions to test leadership qualities
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Q2. Tested rigorously by giving managerial scenarios
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Q1. Why Goldman Sachs and what makes you leave Morgan Stanley
Ans. 
I chose Goldman Sachs for its global reach and diverse opportunities. I left Morgan Stanley to pursue new challenges and growth.
• Goldman Sachs offers a wider range of global opportunities compared to Morgan Stanley

• I was seeking new challenges and growth that I believed Goldman Sachs could provide

• I was attracted to the diverse and innovative culture at Goldman Sachs
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Q2. How will you handle a team with no experience previously and how will you deal with credit card again as no experience on the same.
Ans. 
I will provide training and guidance to help the team learn and adapt to handling credit card transactions.
• Provide thorough training on credit card processing procedures

• Offer guidance and support as team members gain experience

• Implement regular check-ins and feedback sessions to address any challenges

• Encourage open communication and a collaborative team environment

• Utilize resources such as online tutorials or industry
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Q1. This was with an MD and India Head
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Q2. Just testing character as human and the qualities that you possess for a role of this stature
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