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Vamsi Labs Interview Questions and Answers
Q1. 3. Check whether a given string is a palindrome or not
A palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward.
Convert the given string to lowercase and remove any non-alphanumeric characters
Reverse the string and compare it with the original string to check for palindrome
Examples: 'racecar' is a palindrome, 'hello' is not a palindrome
Q2. 2. Difference between synchronous and asynchronous programming
Synchronous programming executes code sequentially, blocking further execution until the current task is completed. Asynchronous programming allows multiple tasks to be executed concurrently, without waiting for each other to finish.
Synchronous programming is easier to read and debug, but can lead to blocking issues.
Asynchronous programming is more complex, but improves performance by allowing non-blocking execution.
Examples of synchronous operations include reading a file or...read more
Q3. 1. Find the longest subsequence in string
Find the longest subsequence in a string
Iterate through the string and keep track of the current subsequence length
Update the longest subsequence length whenever a longer subsequence is found
Return the longest subsequence found
Q4. What is HTML Full form
Hypertext Markup Language
HTML stands for Hypertext Markup Language
It is the standard markup language for creating web pages
HTML elements are represented by tags enclosed in angle brackets, like <html>
Q5. What is css full form
CSS stands for Cascading Style Sheets.
CSS is used to style the layout and design of web pages.
It allows developers to control the appearance of multiple web pages at once.
CSS can be applied inline, internally within the HTML document, or externally in a separate file.
Example:
Q6. difference between var let cons
var, let, and const are used to declare variables in JavaScript with different scopes and mutability.
var is function-scoped and can be redeclared and updated
let is block-scoped and can be updated but not redeclared
const is block-scoped and cannot be updated or redeclared
Q7. explain box model
Box model is a concept in CSS where every element is treated as a rectangular box with content, padding, border, and margin.
Every element in CSS is treated as a rectangular box with content, padding, border, and margin.
Content area is where the actual content of the element is displayed.
Padding is the space between the content and the border.
Border is the line that surrounds the padding and content.
Margin is the space outside the border, separating the element from other elem...read more
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