contains-duplicate.py

# Given an integer array nums, return true if any value appears at least twice in the array, and return false if every element is distinct.
#
#  
# Example 1:
# Input: nums = [1,2,3,1]
# Output: true
# Example 2:
# Input: nums = [1,2,3,4]
# Output: false
# Example 3:
# Input: nums = [1,1,1,3,3,4,3,2,4,2]
# Output: true
#
#  
# Constraints:
#
#
# 	1 <= nums.length <= 105
# 	-109 <= nums[i] <= 109
#
#


class Solution:
    def containsDuplicate(self, nums: List[int]) -> bool:
        return len(set(nums)) != len(nums)