Contains Duplicate.py

# https://leetcode.com/problems/contains-duplicate/
# Hak Soo Kim
# 3/17/2022

class Solution(object):
    def containsDuplicate(self, nums):
        arr = []
        for num in nums:
            if (num in arr):
                return True
            else:
                arr.append(num)
        return False
        # return (len(nums) != len(set(nums)))
        """
        :type nums: List[int]
        :rtype: bool
        """

# 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