Let's implement the built in functions again!
- Try to use native functions and operators
 - Avoid ES6+ features
 - Your solution file should contain the MDN Link of the method you impleneted
 - Your solution file should also contain some introduction about the method and few examples
 - We will provide review to your implemenation
 - Your PR should contain commented test cases
 - We'll add our test cases during the review as well.
 
- Star the repo if you liked the efforts of the initiators
 - Tweet about it.
 
All the best