HashedIn by Deloitte Interview Questions, Process, and Tips

They had three coding questions for 1:30 hr and Two technical rounds and at last they had fitment round

Q1. Reverse the array
Ans. 
Reverse the array of strings
• Create a new array and iterate through the original array in reverse order, adding each element to the new array

• Alternatively, you can use the reverse() method on the array itself
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Q2. Detect a loop in the linked list
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect a loop in a linked list.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If they meet at any point, there is a loop in the linked list.
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Q1. Questions where based on sysytem design
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Q2. Low level system design questions , design a tic tac toe game
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Q1. Company culture fit
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Q2. People vs Process
Ans. 
Balancing people and processes is essential for effective team management.
• Effective team management requires a balance between focusing on people and processes.

• Investing in developing strong relationships with team members can lead to better collaboration and productivity.

• Establishing clear processes and guidelines can help streamline workflows and ensure consistency in performance.

• Regularly evaluating and adjusting bo...read more
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Q1. MS proficiency related questions
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Q2. Data analysis related questions
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Senior Management case study scenario, conflict management

3 coding question 1 easy 2 med, 1 hard have to do in 90 mins

Q1. Asked about benefits of linked list, tree, graph
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Q2. Questions on SQL
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1.5 hours
1) maximum subarray sum - LeetCode;
2) keto eating banana - LeetCode;
3) the third one was difficult - dynamic programming question.

Q1. Maximum subarray sum Length of Binary tree Merge Two sorted Linked List
Ans. 
The maximum subarray sum problem involves finding the contiguous subarray within a one-dimensional array of numbers which has the largest sum.
• Use Kadane's algorithm to find the maximum subarray sum efficiently.

• Consider all possible subarrays and calculate their sums to find the maximum.

• Dynamic programming can be used to solve this problem efficiently.

• Example: For array [-2, 1, -3, 4, -1, 2, 1, -5, 4], the maximum subar
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Q2. Quesions from projects, OOPs, Web Development.
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Q3. Pagination, Hoisting etc.
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Q4. DML, DDL etc
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Q1. System Design Relational Schema Table Designing SQL
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Q2. Project discussion + Html js code + basic ques on ML etc
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Arrays and dp questions

Q1. Maximum depth of binary tree
Ans. 
The maximum depth of a binary tree is the longest path from the root node to a leaf node.
• The maximum depth of a binary tree can be calculated recursively by finding the maximum depth of the left and right subtrees and adding 1.

• The maximum depth of an empty tree is 0.

• Example: For a binary tree with root node A, left child B, and right child C, the maximum depth would be 2.
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Q2. Is anagram or not
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1 hour.
Technical questions on AWS, Python Pseudocode, Docker, Kubernetes, Linux commands and git commands.

Q1. Aws services and how to create and launch EC2 instances
Ans. 
AWS services include EC2 for virtual servers. To create and launch EC2 instances, use the AWS Management Console, CLI, or SDK.
• Access the AWS Management Console and navigate to the EC2 dashboard

• Click on 'Launch Instance' to choose an Amazon Machine Image (AMI), instance type, and configure instance details

• Review and launch the instance, selecting key pair for SSH access

• Use AWS CLI or SDK to create and launch EC2 instanc
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Q2. Git and Linux commands
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Q3. Docker related concepts
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Q1. In depth about my projects and previous internship and its project
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Q2. In depth of AWS cloud , VPC, Advance Git and Linux commands
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