HashedIn by Deloitte Interview Questions, Process, and Tips

Q1. Redux and it's workaround
Ans. 
Redux is a predictable state container for JavaScript apps. It helps manage the state of an application in a single immutable state tree.
• Redux is commonly used with React to manage the state of the application.

• Actions are dispatched to update the state in Redux.

• Reducers specify how the state changes in response to actions.

• Selectors are used to extract specific pieces of state from the Redux store.

• Middleware can be used...read more
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Dp and strings questions along with array

Q1. LinkedList and Array medium level questions were asked
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Q2. Rotate a array k times
Ans. 
Rotate an array of strings k times
• Create a temporary array to store elements that will be rotated

• Use modulo operator to handle cases where k is greater than array length

• Update the original array with elements from the temporary array
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Q3. 2 sum using linked list
Ans. 
Use a hash table to find two numbers in a linked list that add up to a target sum.
• Traverse the linked list and store each node's value in a hash table along with its index.

• For each node, check if the difference between the target sum and the current node's value exists in the hash table.

• If it does, return the indices of the two nodes.

• Example: Given linked list 2 -> 4 -> 3 -> 5 and target sum 7, return indices 1 and 2.
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Q1. Dynamic programming and oops concept, dbms concepts were asked
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Q1. Tell me about yourself , why hashedin
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Three Questions were there of dsa and one was sql

Q1. There was question from dsa and sql
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Q2. What are assymptotic notation
Ans. 
Asymptotic notation is a way to describe the performance of an algorithm in terms of its input size.
• Asymptotic notation is used to analyze the efficiency of algorithms by focusing on how they behave as the input size approaches infinity.

• Common notations include O (Big O), Ω (Big Omega), and Θ (Big Theta), which represent the worst-case, best-case, and average-case time complexity respectively.

• For example, if an algorit...read more
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Q3. Some questions were from Tree
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Q1. How to backup Jenkins
Ans. 
To backup Jenkins, you can use the built-in backup feature or manually backup the Jenkins home directory.
• Use the built-in backup feature in Jenkins to create a backup of the Jenkins configuration and data.

• Manually backup the Jenkins home directory by copying the entire directory to a safe location.

• Regularly schedule backups to ensure data is always protected.

• Test the backup and restore process to ensure it works correc
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Duration 100 minutes.
3 coding questions were asked.
1 easy, 1 medium, 1 hard

Q1. Basic concepts of OS, CN, and DBMS were asked.
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Q2. 2 DSA questions were asked. Practice hashedin questions that are available on interviewbit.
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Q1. Database design questions.(Object modeling was asked from some other student) 2 DSA questions (Varied from participant to participant)
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Q1. Intro, Family, Why hashedIn
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