Memoization

Question 1

What is memoization?

Answer 1

It’s a technique where the results of expensive function calls are cached and returned when the same inputs occur again.

Question 2

How do you implement memoization in JavaScript?

Answer 2

You can store the results of a function call in a cache object and return the cached value if the same inputs are encountered again.

Question 3

What is a cache object in memoization?

Answer 3

It’s a data structure used to store previously computed results of a function. It can be implemented using a plain JavaScript object or a Map object.

Question 4

What is the benefit of using memoization?

Answer 4

It can significantly improve the performance of functions that are called with the same inputs repeatedly, by avoiding expensive computations and returning cached results instead.

Question 5

What is a potential downside of using memoization?

Answer 5

It can consume more memory if the cache object grows too large, especially if the function being memoized accepts many different input values.