Contains Duplicate
easyGiven 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
Explanation: The element 1 appears twice.
Example 2
Input: nums = [1,2,3,4]
Output: false
Explanation: All elements are distinct.
Example 3
Input: nums = [1,1,1,3,3,4,3,2,4,2]
Output: true
Explanation: Multiple elements appear more than once.
Constraints
1 <= nums.length <= 10^5-10^9 <= nums[i] <= 10^9
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Test Cases
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