Question

Write a program to check whether the letter exists in the given list or not?
In Python

Answer 1

Answer:

Check if element exists in list in Python

Method 1 : Naive Method. ...

Method 2 : Using in.

Python in is the most conventional way to check if an element exists in list or not. ...

Output : Checking if 4 exists in list ( using loop ) : Element Exists Checking if 4 exists in list ( using in ) : Element Exists.

Method 3 : Using set() + in.

I hope it will helpfull.....☺️

Answer 2

Using set() + in

Converting the list into set and then using in can possibly be more efficient than only using in. But having efficiency for a plus also has certain negatives. One among them is that the order of list is not preserved, and if you opt to take a new list for it, you would require to use extra space. Other drawback is that set disallows duplicacy and hence duplicate elements would be removed from the original list.