R.R. Donnelley Software Developer Interview Questions and Answers

Q1. It was all about java oops and basic questions
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Q1. It will related to the our project and some scenario based questions
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Q1. Salary discussion
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Q1. Basic about Javascript,HTML,CSS
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Q1. Design a weather app
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A weather app that provides accurate and up-to-date weather information.
• Include real-time weather updates

• Provide hourly and daily forecasts

• Include radar and satellite maps

• Allow users to set location and receive alerts for severe weather

• Include a widget for quick access to weather information
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Online test with two section one is general aptituide and Basic cs concepts. And Second round containing the 2 dsa question with intermediate level question.

Q1. Two sorted array in asscending order give the media of two array after merging in asscending order.
Ans. 
The median of two sorted arrays merged in ascending order.
• Merge the two sorted arrays into a single sorted array.

• Find the median of the merged array.

• If the merged array has an odd length, the median is the middle element.

• If the merged array has an even length, the median is the average of the two middle elements.
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Q2. Question on resume on java script 1. whats is closure? 2. what is hoisting? cookie session.
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Q1. Data structure and algorithm problems
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Q1. Introduce yourself
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Q2. DS/Ago problem - dynamic programming
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Q1. Check string is pallindrome or not
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A palindrome is a string that reads the same forwards and backwards, like 'racecar' or 'level'.
• Definition: A palindrome is a word, phrase, or sequence that reads the same backward as forward. Examples include 'madam' and '12321'.

• Ignoring Spaces and Punctuation: When checking for palindromes, spaces and punctuation are often ignored. For instance, 'A man, a plan, a canal, Panama!' is a palindrome.

• Case Sensitivity: Palin...read more
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Q2. Bubble sort explanation
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Q1. What is Indexing in Mysql
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Indexing in MySQL is a technique to improve the performance of database queries by creating a data structure that allows for faster data retrieval.
• Indexes are created on one or more columns of a table.

• They help in speeding up the search, sorting, and joining of data.

• Indexes can be created using different algorithms like B-tree, hash, or bitmap.

• Using indexes appropriately can significantly enhance query performance.

• Exam...read more
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Q2. Opps concepts in php
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Object-oriented programming concepts in PHP
• Encapsulation: bundling data and methods together in a class

• Inheritance: creating new classes based on existing ones

• Polymorphism: using a single interface to represent different types

• Abstraction: hiding unnecessary details and exposing only essential features

• Class: blueprint for creating objects

• Object: instance of a class

• Method: function defined inside a class

• Property: variabl...read more
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Held on interview bit. 3 ques were asked. Questions were from range query and DP.

Q1. 1 Hard DSA question. Given a sequence of positive numbers, make it a non-decreasing sequence. Operation allowed: adjacent elements can be added to form a single element. What is the minimum no of operatio...read more
Ans. 
Transform a sequence into a non-decreasing order using minimum adjacent additions.
• Identify positions where the sequence decreases.

• Each decrease indicates a necessary operation to merge elements.

• Example: For [3, 2, 5], merge 3 and 2 to get [5, 5] (1 operation).

• Count total decreases to determine the number of operations needed.

• Example: For [1, 3, 2, 4], merge 3 and 2 to get [1, 5, 4] (1 operation), then merge 5 and 4 to ...read more
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