10+ Interview Questions and Answers

Critical section is a code segment that should not be executed by multiple threads simultaneously. Solution is to use synchronization techniques.

• Critical section is a part of code that should be executed by only one thread at a time

• Multiple threads accessing critical section can lead to race conditions and data inconsistency

• Synchronization techniques like locks, semaphores, and monitors can be used to ensure mutual exclusion

• Locks can be used to acquire and release access to c...read more

Program to remove duplicates and find 2 highest numbers in an array of strings

• Use Set to remove duplicates from array

• Sort the array in descending order and return first two elements to find 2 highest numbers

SQL is a relational database management system while NoSQL is a non-relational database management system.

• SQL databases are structured and use tables with predefined schema while NoSQL databases are unstructured and use collections or documents.

• SQL databases use SQL language for querying and managing data while NoSQL databases use various query languages like MongoDB's query language.

• SQL databases are vertically scalable while NoSQL databases are horizontally scalable.

• SQL dat...read more

Polyfill of reduce, map are functions that mimic the behavior of the original functions in older browsers.

• Polyfill of reduce function can be implemented using a for loop to iterate over the array and accumulate the result.

• Polyfill of map function can be implemented using a for loop to iterate over the array and create a new array with the transformed values.

• These polyfills are useful for ensuring cross-browser compatibility.

• Example of polyfill for reduce function: Array.proto...read more

A function to reverse a given string.

• Create an empty string variable to store the reversed string.

• Loop through the original string from the end to the beginning.

• Add each character to the empty string variable.

• Return the reversed string.

JavaScript is a dynamic programming language commonly used for web development.

• JavaScript is a high-level, interpreted language.

• It is known for its flexibility and ability to manipulate the DOM.

• Commonly used for client-side scripting in web development.

• Supports object-oriented, imperative, and functional programming styles.

Stability for me is a sense of security and consistency in both personal and professional aspects of life.

• Stability means having a steady income and job security.

• It also involves having a supportive network of friends and family.

• Emotional stability is important for mental well-being.

• Financial stability allows for planning for the future.

• Stability can also refer to a balanced and calm state of mind.

• Examples: Having a stable job with a reliable income, maintaining healthy relat...read more

Reverse the strings in an array of strings

• Iterate through the array of strings

• For each string, reverse the characters

• Update the string in the array with the reversed version