Code :

class Solution: def countElements(self, arr: List[int]) -> int: output=0; for i in arr: if(i+1 in arr): output+=1; return output;

Python for beginners: https://www.youtube.com/watch?v=egq7Z..

Telegram: https://t.me/clcoding_python

class Solution: def countElements(self, arr: List[int]) -> int: output=0; for i in arr: if(i+1 in arr): output+=1; return output;

Python for beginners: https://www.youtube.com/watch?v=egq7Z..

Telegram: https://t.me/clcoding_python

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