Frontend Developer

Given two variables ‘X’ and ‘Y’. Your task is to swap the number without using a temporary variable or third variable.

Swap means the value of ‘X’ and ‘Y’ must be interchanged. Take an example ‘X’ is 10 and ‘Y’ is 20 so your function must return ‘X’ as a 20 and ‘Y’ as a 10.

You are given a string (STR) of length N, consisting of only the lower case English alphabet.

Your task is to remove all the duplicate occurrences of characters in the string.

For Example:

If the given string is:
abcadeecfb

Then after deleting all duplicate occurrences, the string looks like this:
abcdef

What is SDLC, and which is the best model of the Software Development Life Cycle? (Learn)

• What is hoisting in JavaScript? (Learn)
• What is a closure in JavaScript? (Learn)
• What is a function? What are the types of functions, and what are callbacks and higher-order functions?
• Some HTML and CSS questions.
• What are hooks in React? (Learn)
• How do you fetch data in React?
• What is routing in React?

• What are your strengths and weaknesses?
• What are your goals for the next five years?
• What is your main purpose in life, and why do you want to join TCS?
• What are your salary expectations?