HashedIn by Deloitte Interview Questions, Process, and Tips

Java + Angular Questions were asked by 2 interviewers

Basic aptitude questions

Fibonacci series , 1/2 hr all test

Q1. System design, SQL
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Q1. Java spring boot micorservices
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Q2. Coding questions
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Q1. Project, CV, CI/CD
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Q1. Kadane's Algorithm
Ans. 
Kadane's Algorithm is used to find the maximum subarray sum in an array.
• Iterate through the array and keep track of the maximum sum ending at each index.

• If the sum at any index becomes negative, reset the sum to 0.

• Return the maximum sum found.

• Example: For array [-2, 1, -3, 4, -1, 2, 1, -5, 4], the maximum subarray sum is 6 (from index 3 to 6).
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Q2. Reverse a linkedin list
Ans. 
Reverse a linked list by changing the pointers direction
• Iterate through the linked list and change the direction of pointers

• Use three pointers - current, previous, and next to reverse the list

• Update the head of the list to the last node after reversing
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Q1. Design Instagram
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Q1. Normal intro and hr related questions
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Q1. Design the architecture of your current project?
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Q2. HLD of lift design
Ans. 
High Level Design (HLD) of a lift includes system architecture, components, interfaces, and interactions.
• Identify key components like motor, control panel, doors, and sensors

• Define system architecture including how components interact

• Specify interfaces for user input, floor selection, and emergency stop

• Consider safety features like overload protection and emergency brakes
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Q1. Past project experience
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Q2. Past job nature
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