217. Contains Duplicate

https://leetcode.com/problems/contains-duplicate/

Easy

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

## Solution

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