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N-Repeated Element in Size 2N Array

Easy

You receive an integer array nums with the following properties:

  • nums.length == 2 * n.

  • nums includes n + 1 unique values, n of which occur exactly once in the array.

  • Exactly one element of nums is repeated n times.

Find and provide the element that is repeated n times.

Example 1

Input: nums = [1,2,3,3]

Output: 3

Example 2

Input: nums = [2,1,2,5,3,2]

Output: 2

Example 3

Input: nums = [5,1,5,2,5,3,5,4]

Output: 5

Constraints

  • 2 <= n <= 5000
  • nums.length == 2 * n
  • 0 <= nums[i] <= 10^4
  • nums contains n + 1 unique elements and one of them is repeated exactly n times.

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