Java Developer

You are given a string 'str' of length 'N'.

Your task is to reverse the original string word by word.

There can be multiple spaces between two words and there can be leading or trailing spaces but in the output reversed string you need to put a single space between two words, and your reversed string should not contain leading or trailing spaces.

Example :

If the given input string is "Welcome to Coding Ninjas", then you should return "Ninjas Coding to Welcome" as the reversed string has only a single space between two words and there is no leading or trailing space.

Ninja is playing with numbers but hates when he gets duplicate numbers. Ninja is provided an array, and he wants to remove all duplicate elements and return the array, but he has to maintain the order in which the elements were supplied to him.

Q1. What do you mean by one to many relationships?

a) One class may have many teachers
b) One teacher can have many classes
c) Many classes may have many teachers
d) Many teachers may have many classes

Q2. _________________ operations do not preserve non-matched tuples.

a) Left outer join
b) Inner join
c) Natural join
d) Right outer join

In this round, I received a front-end-based question where I was provided with a product API.

The task was to fetch products from the API, render them using the React framework, and implement the 'Add to Wishlist' functionality. When I clicked on a product, it was supposed to be added to the Wishlist array.

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