Hughes Systique Corporation Senior Database Administrator Interview Questions and Answers

Q1. Android Core Concepts, lifecycles, kotlin concepts and custom views
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Q2. Design a Google Calendar-like application that includes features for scheduling meetings and outline the API contracts.
Ans. 
Design a scheduling application similar to Google Calendar with API contracts for meeting management.
• User Authentication: Implement OAuth for secure login.

• Event Creation: POST /events to create a new meeting with details like title, time, and participants.

• Event Retrieval: GET /events/{id} to fetch details of a specific meeting.

• Event Update: PUT /events/{id} to modify existing meeting details.

• Event Deletion: DELETE /eve...read more
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Q1. Complete Code for Ludo Game. Sort of Machine coding round.
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Q2. Given an array of intervals and return the minimum number of intervals you need to remove to make the rest of the intervals non-overlapping.
Ans. 
Remove overlapping intervals to minimize removals.
• Sort intervals by end time

• Iterate through intervals, remove overlapping intervals

• Return count of removed intervals
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I was asked to implement lru cache which i did but still didn’t made to next round as apparently i didn’t complete the working code though in my opinion i did

Q1. Problems related to Binary Search
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Q2. Problem statement on BST
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Discussing Binary Search Trees (BST) and their properties, operations, and applications.
• A BST is a binary tree where each node has at most two children.

• For any node, values in the left subtree are less, and values in the right subtree are greater.

• Common operations include insertion, deletion, and searching for values.

• Example: Inserting 10, 5, 15 into a BST results in a tree with 10 as root, 5 as left child, and 15 as r...read more
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Oop, database, spring boot, multithreading

Q1. Need to find output of given code
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Q2. Solve some puzzles
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Android basic + DSA and problem solving

Q1. Android in depth
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Android is a mobile operating system developed by Google, based on the Linux kernel.
• Android is open-source and allows developers to create applications using Java or Kotlin.

• Android apps can be distributed through the Google Play Store or other third-party app stores.

• Android supports a wide range of devices, from smartphones and tablets to smart TVs and wearables.

• Android provides a rich set of APIs for accessing device ...read more
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HackerRank Test - 2 Medium Questions
1. Given an Array Weights of Chocolates, Find Maximum amount of Chocolate that can be saved after "d" days, if you eat half the weight of one of the chocolates every day.
2. Find Closest String with equal number of vowels and consonants.