CONTAINS DUPLICATE | LeetCode | CFAM | #leetcode #leetcode217 #cfam

CONTAINS DUPLICATE Leet Code Problem 217 Solution using Python language_____________________________________________________________________________________________________________________________________________
Description :
class Solution:: Defines a class named Solution.

def containsDuplicate self, nums: List int - bool: Defines a method within the class called containsDuplicate. This method takes a list of integers nums as an argument and returns a boolean ,True or False. The List[int] in the function signature indicates that the nums parameter is expected to be a list of integers.

set nums: Converts the list nums into a set. A set is an unordered collection of unique elements. This operation effectively removes any duplicates from the list because sets cannot contain duplicate elements.

len of set of nums != len of nums: Compares the length of the set the number of unique elements in nums with the length of the original list (nums). If they are not equal, it means there were duplicates in the original list, and the method returns True. If they are equal, it means all elements in the original list were unique, and the method returns False.

In summary, the containsDuplicate method checks if there are any duplicate elements in the given list by comparing the length of the list with the length of the set of unique elements in the list. If the lengths are not equal, there are duplicates, and the method returns True; otherwise, it returns False.