interview-questions | Want to ace your whiteboard exercise | Learning library

So I'm doing a question on LeetCode and even though the function has passed the test cases I've realised something isn't right here.

I have a array which is of int types and the array may or may not have duplicate values in. What I need to do is, return the len() of the array once all duplicates are removed. This should be done without creating a new array to get O(1) time efficiency.

I've found an answer on SO which gives a great answer and I learnt something new by it, but what I'm confused at is my code below, which passes the test cases but by creating my own in my IDE, the correct returned length is not actually returned. When I've used the remove() method it only seems to work on the first element in the array. Why is this?

I have this link https://career.guru99.com/top-50-oops-interview-questions/?format=pdf

I want to redirect it to https://career.guru99.com/pdf/top-50-oops-interview-questions.pdf

I created the following htaccess rule

I am just trying to practice reasoning through big O of my leetcode solutions.

This is my solution to a problem called "Plus One". I am simply wondering what the Big O time is here. My thoughts and notes are accompanied in the code

This is super bugging me - this is a question from TestDome React and I am stuck - could anyone please give me a hand? Thanks in advance! (this is the link: https://www.testdome.com/d/react-js-interview-questions/304) This is the question:

This application should allow the user to update their username by inputting a custom value and clicking the button.

The Username component is finished and should not be changed, but the App component is missing parts. Finish the App component so that the Username component displays the inputted text when the button is clicked.

The App component should use the React.useRef Hook to pass the input to the Username component for the input element and for the Username component.

For example, if the user inputs a new username of "John Doe" and clicks the button, the div element with id root should look like this:

Hi guys im learning c# currently and Im trying to run threw some interview questions to try and understand them and learn in the process.

I found a question, How do you find the missing number in a given integer array of 1 to 100?

I think I get the General Idea of having to get the sum, Then the Sum of the Sequence then Minus X - Y;

But im confused about the code example below, Why is he using * (arr.Length + 2) When the Equation is n*(n+1)/2 I know its correct but shouldnt this be (arr.Length + 1) * (arr.Length) / 2 According tot he formula

Im terribly confused.

In this article, they spawned an isolate like this:

I was learning about ReactJs and I found that when it's rendering aspect is compared to AngularJs - for some reasons it's called that ReactJs is server-side rendering technology.

I'm surprised to know this!

Look at the question # 10 here or this Youtube tutorial link

As far as I understand both AngularJs and ReactJs can render on both client & server-side.

I'm quite curious about what am I missing here?

I found following code snippet here https://www.toptal.com/c-plus-plus/interview-questions with the question: How many times will this loop execute? Explain your answer