Cloudangles Software Engineer Interview Questions and Answers

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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Q1. Explain joins in SQL
Ans. 
Joins in SQL are used to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column between them

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• ...read more
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Q2. What are object and class in OOPs?
Ans. 
Objects are instances of classes in OOPs. Classes are blueprints for creating objects with attributes and methods.
• Objects are instances of classes

• Classes are blueprints for creating objects

• Classes define attributes and methods for objects

• Example: Class 'Car' with attributes like 'color' and methods like 'drive'
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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. 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. Problems related to Binary Search
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Q2. Problem statement on BST
Ans. 
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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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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